A thought of a question this morning... Its concerning name servers. When you create an account on your server. It gives you two name server adresses to point your domain towards. Example: ns1.host.co.uk ns2.host.co.uk But, what i've noticed is that you can give your domain name more than two name servers. What is the reson for that? Could it be that if one server goes down, it forwards to another name server? Discuss?
Hello, those servers are used to resolve names into IP addresses. If ever one failed, then lookups can resume using the second one, or the third one in the case you mentionned. Cheers ! Thibaut
without guessing: 1. nameserver DO get down hence you have at least 2 better 3 or more nameservers 2. by default NS should be in different IP subnets / different countries or if you have global traffic in different continents to reduce name resolving query times and offer the physically shortest distance for all surfers NS quesries practical example: months ago - around xmas time 2006/7 after the sea-earthquake somewhere in taiwan - much of asian traffic was down for several weeks unless ppl had their own re-routing solution if your server is in US - traffic is global - but NS1 would be IN asia for asian visitors - then your 2nd NS would be contacted instead of first one if a asian surfer contacts your site and has lost connection to asian NS i have global traffic from some 200+ countries but about 50% is US / CA traffic, hence i have 1 NS in california - next in florida and next in europe to offer shortest query times for the majority of all site visitors. btw one of the 3 NS is on my own server - my own NS - to have full control - all others are auto-updated from my master NS