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Editorial Team
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Asked: 2026-05-11T19:59:27+00:00

First, this is a programming question because I’m trying to set up a test/QA

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First, this is a programming question because I’m trying to set up a test/QA server running alongside a production server.

Second, yes I should post this on Serverfault, but I tried logging in with THREE different OpenID providers, and every time I get an error saying this this provider isn’t supported in the Beta (even though the icon is right there). To post a question you must log in.

Whew, okay.

Currently I have one A record with @ host pointing to my server IP, let’s say 111.11.11.11. I then have a CNAME record with www host pointing to @ from my A record.

The problem is that I have a different web server running on 111.11.11.11:8080. I’d like to make another CNAME so that test host points to something like @:8080

To summarize:

http://www.mydomain.com should resolve to 111.11.11.11

test.mydomain.com should resolve to 111.11.11.11:8080

Is this possible? If so, how?

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1 Answer

  1. Editorial Team

    DNS A (address) record doesn’t have port number. So, not, that is not possible.

    What’s possible is to have another IP for the same machine (e.g. 111.11.11.12) and let test.mydomain.com resolve to it. Then your first server should listen on the first IP only, and second on the second only.

    P.S. There are DNS SRV records that allow to specify the port, but browsers DO NOT use them, alas.

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