[olug] Domain name propagation - how long?

[Phil Brutsche]

Ryan O'Rourke wrote:

> What about when you change webhosts and have to update your DNS through
> your registrar? Internet DNS servers already have your domain mapped to
> 1.2.3.4 - how long does it take after your registrar updates for
> Internet DNS servers to realize that your domain is now mapped to
> 5.6.7.8?

Like Sean said, it depends on the TLD.  For at least .COM the name 
servers update the root zone at 5AM and 5PM Eastern time.

It also depends on the TTL (time to live) on the NS (name server) and A 
(address) RRs in your zone.  It could take up to a day or two.

-- 

Phil Brutsche
phil at brutsche.us