hamids54 - 12:10 am on Jun 29, 2010 (gmt 0)

I have two websites and one dedicated server for them.multiple times I asked privious server
manger why he offered me to use ns1[dot]dnsexit[dot]com and ns2[dot]dnsexit[dot]com .I told him we can have and use our own child name servers why we don`t use tham.he said there is not problem.

now I changed my manager ,created my own nameservers with our ip numbers.I want to know why he used the dns`s.were they making any bad influences on performace of my websites
or my server?