This is real useful service for Web Designers who is moving his or her server to new location or moving hosting service from one service provider to another.
Service’s Name is ‘Open DNS’
It’s related to DNS (Domain Name System)
As WikiPedia Explains what is DNS:
The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities.
A Domain Name Service resolves queries for domain names (which are easier to understand and utilize when accessing the internet) into IP addresses for the purpose of locating computer services and devices worldwide.
By pasting Open DNS’s IP addresses inside your current Internet Service Provider’s (Internet) Connection Setting from System Preferences which copied from Open DNS’s Website will allow your computer with updated DNS information, As every ISP has DNS caching enabled for their services so whenever you change your domain Nameservers or IP Addressees your computer will be always be updated with Open DNS settings & it will by pass your ISP’s cache databases.
Big relief for those who are switching their domain & webspace hosting services….!!!
Thanks & Regards