A, AAAA, MX, NS, TXT
DNS Lookup
DNS Lookup resolves a domain's records — A, AAAA, MX, NS and TXT — and shows their values and TTLs. It is the go-to tool for verifying DNS changes, mail (MX/SPF) setup and propagation across resolvers.
Run a DNS Lookup test →What it measures
- A and AAAA address records (IPv4 / IPv6)
- MX (mail), NS (nameserver) and TXT (SPF/DKIM/verification) records
- TTL for each record and query time
How to read the results
- Low TTLs propagate changes faster but add resolver load.
- A missing or wrong MX/SPF record is the usual cause of mail delivery issues.
- Consistent records across resolvers means your change has propagated.
Frequently asked questions
How long does DNS propagation take?
Up to the record's TTL — often minutes to a few hours. Lower the TTL before a planned change to speed it up.
What is a TXT record used for?
Domain verification and email auth — SPF, DKIM and DMARC policies live in TXT records.