Comments on: Host company website inhouse http://itknowledgeexchange.techtarget.com/itanswers/host-company-website-inhouse/ Thu, 20 Jun 2013 04:39:12 +0000 hourly 1 By: wrobinson http://itknowledgeexchange.techtarget.com/itanswers/host-company-website-inhouse/#comment-50696 wrobinson Sat, 24 Nov 2007 17:50:14 +0000 #comment-50696 The name servers that you intend to use must be online at the time that you intend to register them. Make sure that they can be reached from the Internet through any firewall that you may be using. DNS uses port 53 (TCP and UDP) for communication.

You should also make sure that all of the DNS zone records are in place on your name servers because once the registrar updates its database, queries for information related to your domain will be forwarded to the name servers in question. If they are not up and running or reachable from the Internet, your site will for all intents and purposes be down.

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