Just to make sure I wasn't going nuts, I polled three other DNS servers and did a lookup on them, too and I got the correct IP addresses on each of them.
Has anyone else noticed this on new domain name registrations?
Just wanted to pass this along. Not sure if other domain name providers are this fast.
I know many ISP's set TTL longer than is requested by the domain name owner. In that event, yes the information won't update until the ISP TTL has expired.