dnstest multiple message start page

This page should always be reachable, but the page below will only work if your DNS (Domain Name System) service handles multiple messages correctly.
Please click the link below to test your DNS.
dnstest multiple message test page

In technical terms, this tests if DNS over TCP is working, not just DNS over UDP. This is important because DNS responses are getting larger, and won't always fit in a singe UDP packet. Particularly due to DNSSEC and quantum computers.