Cname Lookup Windows








Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. Use the DNS CNAME for database connectivity. Adding multiple DNS records to a new DNS Zone Is a very common task that can take a long time to complete If we have many records. Office 365 uses a CNAME record to point to the correct authentication. DNS Server : Add Reverse lookup Zone. Why are my CNAME records in Webmin not functioning, or am I mistaken? - Hello, I got everything setup with Virtualmin/Webmin except for some reason I am unable to get the CNAME records to function. To access nslookup , open a command prompt window by selecting Start > All Programs > Accessories > Command Prompt. This article describes an issue when achain of CNAME records is configured on a Windows Server 2012 R2-based DNS server. Jul 07, 2012 · The third level cname method and host header (azure site) is not a url redirection. Luckily, I no longer have to use the old-fashioned command-line NSLookup tool because Windows 8, Windows Server 2012, and even the Microsoft Surface have the DNSClient module built-in. com and press enter. There are also two CNAME records for two other intranet sites. Adding a host (A) record with a blank. Here are all the commands you can use with descriptions. CNAME stands for Canonical Name. example //this is invalid as the RFC www. If you are using someone else's name servers (eg. Windows 10: How to perform a DNS MX lookup using nslookup. Jun 22, 2009 · When a user goes to app1. One such live example i saw was "www. However, a lookup on our windows boxes seems to work fine. Add preset DNS records for email, domain forwarding, and other services. Alias records are used to define hosts within the domain. A CNAME record takes this format:. It’s an indirect association as the host in CNAME will point to another name which, in turn, will correspond to an existing Record (A or AAAA or CNAME). Nov 13, 2013 · Learn to configure DNS records in Windows Server 2008 R2 and Windows Server 2012 and about basic DNS record types, all in this tutorial! (CNAME). To remove a CNAME record for a given domain, type the rm dns cnameRec command and the alias of the domain name. Office 365 uses a CNAME record to point to the correct authentication. Create forward (A - Address record) and reverse (PTR - Pointer record) lookup entries to map the SMB server name to the IP address of the data LIF. Feb 22, 2018 · defined by a CNAME. DNS allows multiple A records to point the the same address. Today we will be adding or updating an A-record in your domain's DNS zone file: 1. Mar 25, 2018 · Check your domain IP address and Name Server records DNS like CNAME, MX, A, TXT, and other records using command prompt CMD in windows OS. To add the CNAME record to your domain host, follow the steps below. IN CNAME www. An Article to check Domain Name Server (DNS) records of any website or blog without login into host account. NSLOOKUP (TCP/IP) Lookup IP addresses on a NameServer. On Mac or Linux, start the terminal. This was in response to frequent questions we had on this area during Six Weeks of Windows Azure. 4 CNAME records A CNAME record is not allowed to coexist with any other data. Windows 10 clients unable to access a 2012 R2 file server using a CNAME\Alias Our new file server runs Windows 2012 R2 (its real name is fileserver1. DNS is the foundation the house of Active Directory is built upon. May 21, 2016 · N slookup is a very famous command incorporated in the Windows operating systems to know about the information related to the domain names and the Internet Protocol (IP) addresses associated with. Oct 18, 2019 · PTR Record: PTR record stands for Reverse lookup record or Pointer record. 3 of RFC 2181 states: 10. What are CNAME records? CNAME records are aliases of, or redirect to, other DNS entries. For example, a CNAME record can map the web address www. This shows the email was legitimately sent from a HostMonster server, where the domain will be listed if a Reverse DNS Lookup is done. Each DNS database zone file consists of one or more resource records, including the Canonical Name (CNAME), Pointer (PTR) and Mail Exchange (MX) records. Switch to the DNS Zone File tab. If you've researched DNS, you know that there can be a complex set of queries and responses with multiple servers involved before that resolution is returned to the client. com to SpaceCraft. You cannot create a CNAME record for the main domain name (mydomain. By default, NSLookup is user friendly. Jun 19, 2015 · Skype for Business Server 2015 Deployment – Part 1 June 19, 2015 by Jeff Schertz · 24 Comments Similar to past articles this series of basic deployment articles will be used to capture a specific environment to also be used as the foundation for many Skype for Business (SfB) Server 2015 specific deployment articles. mydomain” and it is unable to run the DNS checks this might help you. How do I use nslookup command line administrative tool for testing and troubleshooting DNS servers including reverse lookup under UNIX or Windows operating systems? How do I look up an IP address of a domain or host on a network using nslookup command? nslookup is a UNIX or Windows (nslookup. He offers breakdowns of difficult concepts as well as practical technical tips for the day-to-day activities involved in DNS server management. The following types of DNS records are especially useful: A: the IPv4 address of the domain. updated on 20-october. com and the extra record (a TXT record) was for a specific subdomain subdomain1. DNS Records Explained with Examples. There are also two CNAME records for two other intranet sites. You can connect to server and query records types that you need. Cache CNAME records. If you want to learn more, here is the nslookup manual (man page). In the Host Aliases (CNAME Records) section, click the Edit CNAME Records button. I have created the CName records for Lync as follows: sip. This will bring up the window shown in Figure. From the My Site menu on the left, Click on Domains. Canonical Name (CNAME) Records A Canonical Name (CNAME) record represents a server alias, and allows any one of a number of servers to be referred to by multiple names in … - Selection from Windows Server® 2012 Unleashed [Book]. For example, you might have a CNAME record docs. First make sure that your bucket name is the same as your CNAME. What is CNAME Record? The CNAME record is also known as canonical name record. After CNAME lookup i cane to know the destination URL is directed to an IP which has no resources. CNAME records can once again point to another CNAME record, although this must be avoided, but will work if properly configured. On Mac or Linux, start the terminal. Oct 04, 2018 · Host A Record:- There are very high chances that there is an Host A record already created for the same DNS entry for ex:- you are trying to create CNAME record of “www” in abc. CNAME record can point to any valid name in the DNS. Once you change the DNS server addresses, restart your computer. set q=cname. Add CNAME Record using DNS Manager. DNS (domain name system) is essentially the backbone of the internet. Note: If your domain is registered at another company, see the Domains registered at another company section below for instructions. In this PowerShell Code post, I’ll show you how I add multiple DNS A Records and CNAME Records to a DNS Zone using PowerShell. Syntax Lookup the ip address of MyHost: (for example, A, CNAME, MX, NS, PTR, and so on) -a - list Aliases. Basically, DNS maps domain names to IP addresses. If it's shortened, the rest of the system will understand that in that particular context, en is really referring to en. Trying to use CNAME in a UNC path, Windows Server Help, Windows 2000 // 2003, Exchange mail server & Windows 2000 // 2003 Server / Active Directory, backup, maintenance, problems & troubleshooting. Using DNS Lookup with Windows. Can someone give me an idea what I'm doing wrong? I would think this should be. Start of authority (SOA), Name server (NS), Hostname (A), Canonical Names (CNAME) and Mail eXchange (MX) entries are added to the forward lookup zone as shown below for a domain "foodomain. CNAME lookup Middleware that translates an unknown domain in the host header to something that ends with the configured storage_domain by looking up the given domain's CNAME record in DNS. You are running an SMB file server, such as Windows Server. com to autodiscover. This UltraTools DNS tool performs an authoritative DNS lookup and provides details about common resource record types for root server, TLD server and Nameserver information. Find available domains & domains for sale. As usual, we can add CNAME record in Windows DNS server either by using DNS Manager or PowerShell. Using this script , you can LookUp, Create and Delete A,PTR and CNAME Records. One of my European colleagues noted they were having issues with NSlookup. You can gain additional insight, with the DNS trace and the DNSSEC analyzer. mycompanydomain. The nslookup command can also perform a reverse lookup using an IP address to find the domain or host associated with that IP address. Replace yourdomain. Name Server. How to add a CNAME to your 1&1 IONOS hosted domain. When a name server looks up a name and finds a CNAME record, it replaces the name with the canonical name and looks up the new name. Mar 09, 2015 · Since windows can manually do a CNAME lookup via nslookup my GUESS would be that the client is capable of doing the second lookup, but whether it will do so or whether the application making the query uses the same mechanism are a different matter, and I don't know. In this article I have tried to visualize and explain all the core records of DNS without which Active Directory cannot function properly. DNS (Domain Name System), is the service which translates between Internet names and Internet addresses. After you add your CNAME, TEXT or MX records to your DNS host, you need to validate them in the SendGrid UI. I want to know if there is an existing command or script to retrieve the Canonical Name Record (CNAME) for a given computer or server. Oct 28, 2011 · By default Microsoft Windows Server only allows clients to access it via file manager (SMB access) using the name of the server. If some of the aliases are in domains managed by others, there's no lookup that will do it. If you type in an IP address, we will attempt to locate a dns PTR record for that IP address. You didn't say what tools you used to check this CName problem. Our Windows 7 clients have no problem accessing its shares using the DNS alias (server. Review the RRs to confirm that there are no CNAME records older than 6 months. This utility includes the DNSCMD command which can be scripted to delete and add host and reverse lookup entries in DNS. com lets you instantly perform a DNS lookup to check a domain names current IP address and DNS record information against multiple name servers located in different parts of the world. Dig allows you to perform any valid DNS query by appending the record type to the end of the query. A CNAME record stands for Canonical Name. Go to your domain's DNS records. Although, you didn't really explain what CNAME records had to do with it, or what information you were looking for (the resolved alias name, or the fully-resolved IP address for a CNAME, etc. We use cookies to analyze how you use our site and show ads related to your preferences. This allows you to check the current state of DNS propagation after having made changes to your domains records. These additional A records allow the DNS client to locate the name servers. Also called a canonical name records, they act as aliases, pointing to another DNS name. com to SpaceCraft. However, a lookup on our windows boxes seems to work fine. It only displays the basic name resolution information resolution for a target host. CNAME lookup Middleware that translates an unknown domain in the host header to something that ends with the configured storage_domain by looking up the given domain's CNAME record in DNS. Press Windows Key + R, execute dnsmgmt. A, CNAME, ALIAS, and URL records are all possible solutions to point a host name ("name") to your site. Mar 11, 2013 · RDWeb feeds allow users to access RemoteApps straight from the desktop improving the integration of the product and improving the users experience. So we thought that using CNAME records will work, but as we find out CNAME records will not work for the root domain. Syntax Lookup the ip address of MyHost: (for example, A, CNAME, MX, NS, PTR, and so on) -a - list Aliases. The Nslookup command line command allows you to displays information that you can use to diagnose Domain Name System (DNS) infrastructure. Global DNS Propagation Checker. " subdomain. Use this online domain name look up tool to find the information about any domain name, ip address, subdomains, name server location and it's DNS records. com will be directed to 12. How to go around this Some of you may have notices that some nameservers, such as CloudFlare and Amazon's Route 53 , allow you to set a CNAME record at the zone apex. org or just shorten it and use the hostname of en. How does a CNAME lookup work? A CNAME is like a forwarding address for DNS. You need to change it and use open DNS. Not only is that inefficient, it is in fact explicitly prohibited by RFC 2181. Aug 15, 2019 · For this reason, we do not support custom domains with A records. pdf from CMIT 369 at University of Maryland, University College. Using Custom URLs for Files by Adding Alternate Domain Names (CNAMEs) In CloudFront, an alternate domain name, also known as a CNAME, lets you use your own domain name (for example, www. Graeme Bray here with an article around using Computer Name Aliases instead of DNS CName records. Oct 11, 2017 · The site for all Office 365 administrators. You can find a guide for this here Change Nameservers However, if you would like to manually set your domains DNS records, or if your domain is not delegated to our nameservers, you will be able to find the. This is the simplest online tool to check DNS records of a domain name. Edit Local HOSTS File. All examples use comma as the separator. In the following section, we will show you examples of how to search for the most common records, such as A (the IP address), CNAME ( canonical name), TXT (text record), MX (mail exchanger), and NS (name servers). com, I'd set the bucket name to photos. The DNS setup for a subdomain could use either an A record or a CNAME. com = webdir. Mail eXchanger Lookup Online or MX Lookup Online gives you a simple interface to get information about mail servers that are responsible for accepting emails within the specified domain. The Start of Authority record indicates which DNS server is the best source of information for the domain. Add the SIP CNAME record. How do I add Glue Records. An ad blocker installed on your browser is blocking ads on DNSWatch. The Reverse Lookup tool will do a reverse IP lookup. com will be directed to 12. Windows 10 loosing DNS server Name lookup Every once in a while on Windows 10 the OS looses the ability to look up IP addresses. Creating a CNAME in your current domain will only provide an alias for internal ip addresses, unless you are redirecting with ISS which works as well. To verify that you have created your CNAME record correctly, you can use Kloth's DNS Lookup. Hello all, I have a question about how to properly set up cname records for a subdomain that points to my domain (eg: music. It’s an indirect association as the host in CNAME will point to another name which, in turn, will correspond to an existing Record (A or AAAA or CNAME). AAAA: the domain’s IPv6 address. What are CNAME records? CNAME records are aliases of, or redirect to, other DNS entries. com is a CNAME to data. CNAME lookup failed temporarily. Host Aliases (CNAME Records) A CNAME (canonical name) record is a DNS record that can be used to create an alias for the domain and allow traffic for the domain name to be redirected somewhere else. Dynamic DNS allows you to direct your domain or a subdomain to a resource that is behind a gateway that has a dynamically assigned IP address. CNAME records are handled specially in the domain name system, and have several restrictions on their use when a DNS resolver encounters a CNAME record while looking for a regular resource record, it will restart the query using the canonical name instead of the original name. com CNAME gets points to host01. How to Change CNAME Record Changing CNAME record is particularly useful if you are going to configure your domain to use professionally branded email address with Outlook. DNS Server : Add Reverse lookup Zone. com and support. CNAME stands for Canonical Name. First make sure that your bucket name is the same as your CNAME. If this CNAME record isn't configured properly; for example, if you have a typo in the Points to address, these applications won't be able to authenticate. There have been several reports of DNS hosters refusing to publish DomainKey records because the selectors are published under the "_domainkey" label. EDIT: CNAMEs are not the only way to alias a system. Applies to: Windows Server (Semi-Annual Channel), Windows Server 2016. info > Tools > DNS Record Lookup View all configured DNS records (A, MX, CNAME etc. DNS (domain name system) is essentially the backbone of the internet. CNAME Record: CNAME Record stands for Canonical Name. I need to be able to query for all existing A and CNAME records for a domain. What's the dig syntax to query for CNAME records? What I've tried: Pro DNS and BIND by Ron Aitchison ch9 DNS Diagnostics and Tools dig @ns. DNS lookup tool to find Mail Exchanger (MX) Name Server (NS) CNAME TXT (SPF) and Start of Authority Record (SOA) of a web site. What is really convenient is to be able to write out the commands and paste them into a command line window. A CNAME record stands for Canonical Name. Set the DNS Record type you wish to lookup by typing set type=## where ## is the record type, then hit Enter. Sep 15, 2009 · I recently upgraded my home Windows Server 2008 Domain Controller to R2. Adding multiple DNS records to a new DNS Zone Is a very common task that can take a long time to complete If we have many records. Click Edit: The Zone Editor will open in a new tab. CNAME record (Canonical NAME record) A statement in a DNS database (zone file) that assigns an alias to the true name (canonical name) of a local or remote server. The service they provide is stable, secure and super fast thanks to the special tools they've developed in-house for WordPress users. com", points to "www. For example in this case, @ means yourdomain. We are running Windows Server 2012 R2 and are using the PowerShell DNS Server cmdlets. Forward DNS Lookups. If you are using someone else's name servers (eg. Good morning AskPerf! My name is Sandeep Bhatia and I work with Networking team here in Microsoft Support. It is possible on Windows to display the DNS cache from the command line. This record type is defined in RFC2672. Definition of CNAME record in the Legal Dictionary - by Free online English dictionary and encyclopedia. It’s recommended to use Google DNS. Office 365 uses a CNAME record to point to the correct authentication endpoint. Return to the first window or tab and copy the contents of the Label/Host field. The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. Tech support scams are an industry-wide issue where scammers trick you into paying for unnecessary technical support services. nsupdate is used to submit Dynamic DNS Update requests as defined in RFC2136 to a name server. IN CNAME www. com but abc. Configure each client computer with the correct domain suffix. (Start Menu -> Administrative Tools -> DNS) Expand the nodes on your DNS Server and select the target domain where you will be adding the two DKIM TXT records: Right-Click the target domain and select "Other New Records": Scroll towards the bottom of the list and select "Text (TXT)" then press the "Create. Learn to configure DNS records in Windows Server 2008 R2 and Windows Server 2012 and about basic DNS record types, all in this tutorial! (CNAME). It differs from the CNAME-record which maps only a single node of the name space. You can also find IP address of any website's. This presents itself as my browser timing out when trying to look up a url. Configure each client computer with the correct domain suffix. This Daily Feature explains how two freeware DNS search tools available for use with Windows 9x, NT, and Windows 2000 may be used to provide DNS information. SOA Record Lookup. 99 - Windows 7 (Virtual) - Alias pings (ipV4 displayed), CNAME does not ping. For subdomains (like www. Learning Portal for Cloud, DevOPS, AWS, AZURE, LINUX, Docker, Ansible, Interview Question Answers etc. Perform a DNS lookup with whatsmydns. MX Records: MX stands for Mail Exchange. You use a CNAME record so that your site's name can point to the server for your site without you needing to alter a DNS record if the server's IP address has to be changed. the malicious nameserver. from the menu. For example, you might have a CNAME record docs. The fragment below illustrates a widely used but technically invalid configuration. This How To Video also has audio instruction. net lets you instantly perform a DNS lookup to check a domain names current IP address and DNS record information against multiple name servers located in different parts of the world. Creating DNS records; If you are using Microsoft DNS for Office 365 DNS records, you can create the required records easily with PowerShell. The problem is that when i try to add a CNAME record to alias the server name[the host record] in my DNS server for this website, upon requesting the web-page , it starts asking for authentication for all users , including domain users. A Records, CNAME and Using DNS with Windows Azure Web Sites (WAWS) Posted on November 21, 2013. com CName and links it to the dev01. How to update the DNS Records (A, AAAA, CNAME, MX, TXT, SRV) for my domain If your domain name is registered with Web Hosting Canada you can easily update your DNS records of type A, AAAA, CNAME, MX, TXT and SRV by using the Domain Manager, available for free in your Client Area. azurewebsites. Syntax Lookup the ip address of MyHost: (for example, A, CNAME, MX, NS, PTR, and so on) -a - list Aliases. If you've researched DNS, you know that there can be a complex set of queries and responses with multiple servers involved before that resolution is returned to the client. It also contains pseudo-RRs. I need to be able to query for all existing A and CNAME records for a domain. It’s a handy tool you can use to diagnose the DNS infrastructure of the requested domain name. Nov 18, 2015 · Launch Windows Command Prompt by navigating to Start > Command Prompt or via Run > CMD. com in your browser. Before you can run the script, please make sure to meet the requirements mentioned below:. com pointing to the same application and hosted by the same server. Jan 09, 2018 · How to Add CNAME & TXT Records In this walkthrough, we’re going to show you how to add the MailChimp CNAME record and TXT record inside of cPanel control panel. Querying A records. example IN CNAME customer1. Introduction. Write for DigitalOcean You get paid, we donate to tech non-profits. To change this, please see the article, How to change domain name servers (DNS). Request comes in, header is matched and points to right site in iis. CNAME records can once again point to another CNAME record, although this must be avoided, but will work if properly configured. CNAME-records worden meestal gebruikt om een subdomein, zoals www of mail, te koppelen aan het domein waarin de content van dat subdomein wordt gehost. Using DNS Lookup with Windows. May 23, 2013 · Adding Windows DNS Records Via Command-Line. The following types of DNS records are especially useful: A: the IPv4 address of the domain. What is a CNAME? A Canonical Name or CNAME record maps an alias name to a canonical domain name. This presents itself as my browser timing out when trying to look up a url. dkim, spf and cname Hi, I've tried to add the CNAME records for DKIM to my existing 1and1 hosted domain, however it doesn't allow underscore (e. A; AAAA; NS; MX; TXT; CNAME; SOA; This tool will be helpful to troubleshoot if you have updated some record and want to find out if that is reflected on the Internet. In this clip from LearnKey's Windows Server 2012 Administrator course, we show you how to create DNS records using DNS Manager on a domain controller. Molecular biology An alternative symbol or name for part of the sequence of a known gene that resembles names for other anonymous DNA segments—e. CNAME, which stands for Canonical NAME, serves as the alias of one name to another. com/bbcswebdav/courses/KEY_ITS405/images/ITS405_MeMod04_Q09. From the expanded list, click to select the zone. Contact your domain host if you need to make sure your domain has the correct DNS records shown above. webmasters. Sep 27, 2017 · Components of a CNAME Record. are the entries with the problems CNAME or A records. There are also two CNAME records for two other intranet sites. You are not allowed to have a CNAME record for the domain, as the CNAME is an aliasing feature that covers all data types (regardless of whether the client looks for MX, NS or SOA records). Unable to add a CNAME record: The specific domain name is not valid, you need to specify a valid domain name The DNS service goes down when the system is low on memory (RAM) Statistics calculation does not work in Plesk on Windows: Concurrency syncronization error. delegation: godaddy would never be involved in the lookup. Input Solution for adding DKIM cname records in DNS. Feb 22, 2018 · defined by a CNAME. Whichever provider you have, point the ALIAS/ANAME/CNAME entry for your root domain to the DNS Target, just as you would with a CNAME record: Depending on the DNS provider, an empty or @ Name value identifies the root domain. Do a quick DNS propagation lookup for any domain name and check DNS data collected from all location for confirming that the website is completely propagated or not worldwide. This eliminates the need for explicitly declaring an IP address and means that the IP address can be changed once rather than twice if a CNAME record simply points at an already established host name, as shown in the following example:. net URL: Click Save Zone File on the right-hand top of the screen. Jun 19, 2017 · Hi everyone. Select the domain you want to edit from the DOMAINS tab. If your domain is registered with Namesco, you can redelegate the domain to our name servers from the Namesco Online Control Panel. ) for a specified domain name. So we basically created another AD service account for this SPN and generated the corresponding keytab files. If DNS doesn't work, neither will your Windows network. DNS records queried include A, AAAA, CNAME, MX, NS, SOA, and TXT. This record specifies merely an alias or nickname of a primary host. 9/25/2019; 8 minutes to read +4; In this article. " More details: (DNS servers are Windows 2012 R2 Datacenter) I am able to add a CNAME record with "www" as the alias name, however our browsers universally drop the www, resulting in a DNS lookup of "b2wsoftware. From the Domains table, locate the addon domain name you want to add a CNAME record. Sep 27, 2017 · Components of a CNAME Record. Good morning AskPerf! My name is Sandeep Bhatia and I work with Networking team here in Microsoft Support. Skip navigation Working with CNAME Records:. CNAME records consist of two main parts: Hostname: This is the source address. The CNAME Record is used only for subdomains. " subdomain. NS records, and other places where CNAME is forbidden, because the DNAME results in a CNAME answer to the client. com didn't take this into account. org or just shorten it and use the hostname of en. This tool returns only address (A) records. These additional A records allow the DNS client to locate the name servers. I want to know if there is an existing command or script to retrieve the Canonical Name Record (CNAME) for a given computer or server. Sep 03, 2018 · Nameservers, MX Records and CNAME Records September 3, 2018 9:06 am October 14, 2019 If you’re connected to the internet, the device you’re using to lookup a website uses the Domain Name System (DNS) for client to server communication. Not only is that inefficient, it is in fact explicitly prohibited by RFC 2181. This is only possible since we display ads to cover our expenses. In the past, we used to set the registry key DisableStrictNameChecking to be able to add a DNS alias to connect via a name (such as fileserver. com CNAMEs get pointed to sql01. com in your browser. DNS time-to-live settings for CNAME records. com, but you want users to access it using its ‘www’ part (www. com, which will find the IP address 12. 9/25/2019; 8 minutes to read +4; In this article. A tip on how you can use Windows PowerShell to view a list of DNS resource records. For example, some providers may refer to the field where you’ll enter your subdomain as either Name or Host. You can start by selecting the zone that you want to use. DNS is a global system for translating IP addresses to human-readable domain names. How To Check DNS Records Using Basic Nslookup Command Examples. Typing a question mark at the prompt prints the program's help instructions. This allows you to check the current state of DNS propagation after having made changes to your domains records. Plus the bonus that the AWS services manipulate the Alias sets saving you getting out of bed a 2AM to alter CNAME records. However, the people that I were interacting with regarding this matter, their email bounces (CNAME lookup failed temporarily). Mar 14, 2010 · Author and talk show host Robert McMillen explains the Create Alias CNAME record in Windows DNS commands for a Windows 2003 server. The below requirements are needed on the host that executes this module. How to Change CNAME Record Changing CNAME record is particularly useful if you are going to configure your domain to use professionally branded email address with Outlook. com CName and links it to the dev01. Microsoft Windows, IBM OS/2: Proprietary commercial software ReactOS: GNU General Public License nslookup is a network administration command-line tool available in many computer operating systems for querying the Domain Name System (DNS) to obtain domain name or IP address mapping, or other DNS records. However, a lookup on our windows boxes seems to work fine. This utility includes the DNSCMD command which can be scripted to delete and add host and reverse lookup entries in DNS. DNS is an Internet service that translates domain names into IP addresses. 80 and you set up www.