DNS Tools
A Record Lookup
Look up a domain's A records - the IPv4 addresses it points to.
Enter a domain to look up its A records (IPv4 addresses).
JustChecker tracks your DNS records continuously and alerts you the moment something changes.
Frequently Asked Questions
An A ("Address") record maps a hostname to an IPv4 address - it's the record that tells a visitor's browser exactly which server to connect to when they type your domain.
Multiple A records are commonly used for load balancing or redundancy across several servers, or because a CDN provider publishes several edge IP addresses for the same hostname.
If you're behind a CDN or reverse proxy (Cloudflare, for example), the A record often points to the CDN's IP address rather than your origin server's actual IP - this is expected and intentional in that setup.
A lower TTL (e.g. 300 seconds) makes future changes propagate faster but increases DNS query volume slightly; a higher TTL (e.g. 3600+ seconds) reduces query load but means changes take longer to take effect globally - most sites use something in between unless actively planning a migration.
Technically yes, but a public-facing A record pointing at a private (RFC 1918) IP address would be unreachable from the public internet - this is almost always a misconfiguration for a production website.
When you specifically need to confirm or troubleshoot IPv4 resolution - for example, verifying a server migration actually took effect - a focused, single-record-type view is faster to read than a combined multi-record report.
An A record maps to an IPv4 address; an AAAA record maps the same kind of hostname-to-address relationship, but to a (longer) IPv6 address instead.