DNS Tools
DNS Lookup
Instantly look up A, AAAA, MX, TXT, NS, CNAME, SOA, and CAA records for any domain.
Enter any domain below to instantly look up its A, AAAA, MX, TXT, NS, CNAME, SOA, and CAA records.
JustChecker tracks your DNS records continuously and alerts you the moment something changes.
Frequently Asked Questions
It queries the most commonly-needed record types for a domain in one pass - typically A, AAAA, MX, TXT, and NS - giving a quick overview before drilling into any single record type with a dedicated tool.
DNS uses a globally distributed system of resolvers and caches. Propagation delays, geographic DNS routing (GeoDNS), and differing cache expiry (TTL) times mean two different resolvers can briefly show different results after a recent change.
Either the domain has no records of the queried type configured at all, or the domain's nameservers themselves are not resolving - the latter usually means a nameserver misconfiguration at the registrar level, not a problem with any individual record.
Most changes propagate globally within a few minutes to a few hours, bounded by the record's TTL (time-to-live) value - a record with a 24-hour TTL can take up to 24 hours to fully clear from caches worldwide.
This tool gives a fast, combined snapshot across several record types at once; the dedicated A/AAAA/MX/TXT/NS/CNAME/SOA tools each query and format that one specific record type in more detail.
Yes - an unregistered domain will return no nameserver or record data whatsoever, distinct from a registered domain that simply has no DNS records configured yet.
No - this is a fresh, server-side query independent of your own device's DNS cache, so it accurately reflects the domain's current public DNS state even if your browser is still showing you a stale, locally-cached result.
Multiple A records for the same hostname is a common load-balancing or high-availability technique - DNS returns several valid addresses and clients (or a load balancer) choose among them.