We ask every one of your nameservers the same questions, then tell you where their answers disagree.
Most DNS tools ask one resolver one question. This one walks down from the root servers and then interrogates each of your nameservers separately, because the interesting faults are the ones where they disagree.
The nameservers your registrar publishes should match the NS records inside the zone. When someone changes one and forgets the other, the domain works from some networks and not others.
Every nameserver should be serving the same version of your zone. A server stuck on an old serial is the classic cause of "it works on my phone but not my laptop".
MX records that point nowhere, a mail server behind an alias, two competing SPF records, a missing DMARC policy — the usual reasons email quietly stops arriving.
Slow pages, an unsupported WordPress site, no backups, or no idea who even controls your hosting? Send us your URL and the main problem — our UK team will check your setup and tell you, in plain English, exactly what to fix.
