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I have a domain, and I would like to point to the ip:port, so I want my to point to, let's say (I know, that's localhost, just an example) I do not have access to the network router/switch, I would simply like to do this with my CloudFlare control panel or something along those lines, where I can point sub.domain.tld to the ip with a certain port.

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This is an XY problem. There's something you're trying to do, and you somehow think that making a domain point to a port (which doesn't make any sense) will do whatever it is you're trying to do. It won't, since that doesn't make any sense. If you describe your problem in detail, forgetting how you think you should solve it, we can probably tell you how you can actually solve it. – David Schwartz Feb 10 '14 at 21:09
You can't assign a domain name to a port. – Ƭᴇcʜιᴇ007 Feb 10 '14 at 21:15
@DavidSchwartz - Sounds like a job for a reverse proxy? – Michael Frank Feb 10 '14 at 23:00
This needs to be in a FAQ, it's asked so frequently. – milli Feb 12 '14 at 5:15

There is no way to achieve this using DNS (by definition of DNS), but you could use a service such as Afraid Free DNS with a Web Forward to achieve the same result. The results are fairly transparent to the end user if you use the Cloak option in the Web Forward configuration.

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