Website diagnostics

DNS Lookup

Enter a domain and select a record type to inspect its current DNS response.

What can a DNS lookup check?

DNS resolution

Confirm that a domain resolves to expected IP addresses, name servers, or CDN endpoints.

Email configuration

Inspect MX and TXT records when troubleshooting delivery, SPF, and domain verification.

Migration debugging

Review CNAME, A records, and authority data before or after server and CDN changes.

Supported record types

A A records
6 AAAA records
CN CNAME records
MX MX records
TX TXT records
NS NS records
SO SOA records
CA CAA records

How to use the DNS lookup tool

Enter a domain name, choose a DNS record type, and select a resolver. AccessTest returns the current DNS response and highlights useful health signals for common website and email configurations.

Use DNS Lookup before changing hosting, adding a CDN, moving email providers, or troubleshooting why a domain points to the wrong server. The ALL option is useful when you need a broad snapshot quickly.

For migrations, compare results across resolvers and wait for TTL-based caches to expire. A mismatch does not always mean the authoritative DNS is wrong; it can also be normal cache propagation.

DNS lookup FAQ

What is a DNS lookup?

A DNS lookup asks a resolver for the records attached to a domain, such as A, AAAA, CNAME, MX, TXT, NS, SOA, or CAA records.

Which DNS records should I check before a website migration?

Check A, AAAA, CNAME, NS, and CAA records before changing hosting or CDN providers. Check MX and TXT records if email delivery or domain verification is involved.

Why do DNS results differ between resolvers?

Resolvers may cache records for different lengths of time, use different upstream paths, or see propagation changes at different moments.

What is DNS TTL?

TTL is the time a resolver may cache a DNS answer. Lower TTL values can make migrations faster, while higher values reduce repeated lookup traffic.