About a month ago I moved my website to a new virtual private server with a different set of IPs. I set the old nameservers to point to the new VPS IPs before I ‘left’, and set up matching nameservers on the new VPS as well. The transition went smoothly, and the old VPS was presumably switched off a bit later.

The last week or so my colleagues have been complaining that our work website and email is offline when they travel (eg China). Both are working, but a DNSstuff report shows that the *parent* nameservers (not mine) are still caching old data, pointing to the authoritative nameservers on our old VPS, which no longer exists.

Is there any way to force parent nameservers to update their records? A month seems an unreasonably long time to cache things.

IMHO you need to contact the registrar of your domain.

Only they can change the IP to the correct value.