Home

Creating a subdomain in O365

%3CLINGO-SUB%20id%3D%22lingo-sub-871680%22%20slang%3D%22en-US%22%3ECreating%20a%20subdomain%20in%20O365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-871680%22%20slang%3D%22en-US%22%3E%3CP%3EHi%2C%3C%2FP%3E%3CP%3EIs%20there%20any%20way%20of%20creating%20a%20subdomain%20in%20O365%20with%20an%20already%20existing%20domain%3F%3C%2FP%3E%3CP%3EExample%3A%20webshop.contorso.com%20where%20contorso.com%20is%20the%20main%20domain%20controlled%20by%20the%20NS%20pointers%20by%20Microsoft.%3C%2FP%3E%3CP%3EIt%20seems%20that%20the%20only%20way%20is%20to%20move%20the%20domain%20outside%20O365%20to%20a%20more%20advanced%20DNS%20server.%3C%2FP%3E%3CP%3EAll%20threads%20that%20I%20checked%26nbsp%3Bsays%20that%20you%20have%20to%20move%20the%20domain%20to%20an%20external%20DNS%2C%20but%20they%20are%20a%20bit%20old.%3C%2FP%3E%3CP%3EThe%20DNS%20editor%26nbsp%3Bin%20admin%20center%20is%20very%20simple.%26nbsp%3B%26nbsp%3BNo%26nbsp%3Bother%20way%20of%20doing%20this%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EBest%20Regards%3C%2FP%3E%3CP%3ERob%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-871680%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EOffice%20365%20Administration%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-871807%22%20slang%3D%22en-US%22%3ERe%3A%20Creating%20a%20subdomain%20in%20O365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-871807%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F414083%22%20target%3D%22_blank%22%3E%40headmaster%3C%2FA%3E%2C%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EIs%20advised%20to%20use%20a%20DNS%20managed%20externally%20to%20have%20other%20options%20that%20are%20not%20available%20on%20DNS%20managed%20by%20Office%20365%2C%20you%20can%20read%20more%20here%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Foffice365%2Fadmin%2Fsetup%2Fdomains-faq%3Fview%3Do365-worldwide%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%20noopener%20noreferrer%20noopener%20noreferrer%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Foffice365%2Fadmin%2Fsetup%2Fdomains-faq%3Fview%3Do365-worldwide%3C%2FA%3E%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EBest%20Regards%2C%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3ENuno%20%C3%81rias%20Silva%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-871811%22%20slang%3D%22en-US%22%3ERe%3A%20Creating%20a%20subdomain%20in%20O365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-871811%22%20slang%3D%22en-US%22%3E%3CP%3E%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F50%22%20target%3D%22_blank%22%3E%40Nuno%20Silva%3C%2FA%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EThanks%20for%20answer.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EBut%20to%20change%20a%20domain%20to%20an%20external%20DNS%20provider%20is%20always%20a%20risky%20business%20with%20a%20risk%20for%20down-periods%20for%20both%20homepage%2C%20mail%2C%20SharePoint%20and%20Teams.%20I%20would%20not%20say%20that%20it%20is%20an%20easy%20thing%20to%20fix%20for%20a%20medium%20size%20company%20with%20important%20communication%20flow.%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3ERegards%3C%2FP%3E%3CP%3ERob%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-SUB%20id%3D%22lingo-sub-871815%22%20slang%3D%22en-US%22%3ERe%3A%20Creating%20a%20subdomain%20in%20O365%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-871815%22%20slang%3D%22en-US%22%3E%3CP%3EHi%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fuser%2Fviewprofilepage%2Fuser-id%2F414083%22%20target%3D%22_blank%22%3E%40headmaster%3C%2FA%3E%2C%3C%2FP%3E%0A%3CP%3E%26nbsp%3B%3C%2FP%3E%0A%3CP%3EIf%20you%20prepare%20all%20DNS%20records%20on%20the%20destination%20DNS%20when%20you%20change%20the%20name%20servers%20on%20your%20registrar%20of%20your%20domain%2C%20you%20will%20not%20have%20any%20downtime.%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E
Highlighted
headmaster
New Contributor

Hi,

Is there any way of creating a subdomain in O365 with an already existing domain?

Example: webshop.contorso.com where contorso.com is the main domain controlled by the NS pointers by Microsoft.

It seems that the only way is to move the domain outside O365 to a more advanced DNS server.

All threads that I checked says that you have to move the domain to an external DNS, but they are a bit old.

The DNS editor in admin center is very simple.  No other way of doing this?

 

 

Best Regards

Rob

 

3 Replies

Hi @headmaster,

 

Is advised to use a DNS managed externally to have other options that are not available on DNS managed by Office 365, you can read more here https://docs.microsoft.com/en-us/office365/admin/setup/domains-faq?view=o365-worldwide

 

Best Regards,

 

Nuno Árias Silva 

@Nuno Silva 

 

Thanks for answer.

 

But to change a domain to an external DNS provider is always a risky business with a risk for down-periods for both homepage, mail, SharePoint and Teams. I would not say that it is an easy thing to fix for a medium size company with important communication flow.

 

Regards

Rob

Hi @headmaster,

 

If you prepare all DNS records on the destination DNS when you change the name servers on your registrar of your domain, you will not have any downtime. 

Related Conversations
Extentions Synchronization
Deleted in Discussions on
3 Replies
Tabs and Dark Mode
cjc2112 in Discussions on
38 Replies
flashing a white screen while open new tab
Deleted in Discussions on
14 Replies
Stable version of Edge insider browser
HotCakeX in Discussions on
35 Replies
How to Prevent Teams from Auto-Launch
chenrylee in Microsoft Teams on
29 Replies