TXT record lookup
TXT records are where the internet keeps its notes. Mail authentication, service verifications, and a long tail of strings added years ago by somebody who has left. This lists them and says what each one appears to be.
Free, no signup, no daily limit. We do not store what you check here.
Verification records are permanent access
Most services ask for a TXT record once, to prove you own the domain, and then never check it again — but a record that stays published keeps proving ownership to whoever holds that account. Old verification strings from services nobody uses any more are quiet standing permissions. They are safe to remove once the service is gone, and worth reviewing once a year for exactly that reason.
Only one SPF record, ever
A domain may publish exactly one record beginning v=spf1. Two is not additive, it is undefined: receivers are entitled to fail authentication outright rather than merge them. This is the most common thing this tool surfaces, and it usually happens when a second mail provider is added by somebody who did not know to edit the existing record instead.
Questions
Can I delete an old verification record?
If you no longer use the service, yes, and you probably should. If you still use it, some providers re-check periodically and removing it can cause a silent loss of access.
Why is my TXT record split into pieces?
A single string in DNS cannot exceed 255 characters, so long records are published as several strings that receivers concatenate. That is normal and not an error, though some editors mangle it.
Related tools
SPF record checker
Check a domain SPF record for syntax problems, soft-fail settings and the 10-lookup limit. Free.
DMARC record checker
Check a domain DMARC policy, alignment and reporting setup. Free live DNS lookup, no signup.
DKIM record checker
Look up a DKIM public key by selector and check it is published correctly. Free, live DNS, no signup.
When you need more than a free tool
This page answers what can be determined offline and from public DNS. The API adds live carrier and mailbox verification, a calibrated confidence score, and the full evidence trail behind every verdict.
Credits never expire. Inconclusive verdicts are never billed. Cancel in one call. See pricing or read the docs.