Question : SOA not updated for our AD

Hi Guys,

We changed our DNS SOA to another company and migrated our records across accordingly. Strange this here is, 4 days later, it seems the DNS and SOA records have been repopulated and doing an nslookup outside our AD is:

> set type=soa
> globalgossip.com
Server:         139.130.4.4
Address:        139.130.4.4#53

Non-authoritative answer:
globalgossip.com
        origin = ns1.instradns.com
        mail addr = root.instra.com
        serial = 2009102601
        refresh = 28800
        retry = 7200
        expire = 604800
        minimum = 86400


HOWEVER, our headoffice we can not resolve to ANY of our external DNS records. When I do the same lookup I get....

Server:  ausyd04.globalgossip.net
Address:  10.152.0.104

Non-authoritative answer:
globalgossip.com
        primary name server = udns1.ultradns.net
        responsible mail addr = domains.globalgossip.net
        serial  = 2009110601
        refresh = 10800 (3 hours)
        retry   = 3600 (1 hour)
        expire  = 2419200 (28 days)
        default TTL = 86400 (1 day)

udns1.ultradns.net      internet address = 204.69.234.1

Ultradns was the one we migrated from....why is ONLY our site still looking up ultradns when everyone else is pointing to INSTRA?

Can someone help me out please? thanks

Answer : SOA not updated for our AD

Is that using Forwarders? If so, it could be getting the cached response from there, it will inherit TTLs from there.

Chris