Website Tools
IP Address Lookup
Look up a website's server IP address, IPv4/IPv6, and reverse DNS.
Enter a domain to look up the IP address of the server hosting it.
JustChecker tracks your server's IP address and alerts you if it ever changes unexpectedly.
Frequently Asked Questions
If you're behind a CDN or reverse proxy (Cloudflare, for example), this tool reports the CDN's edge IP address rather than your actual origin server's IP - this is expected and doesn't reveal your true origin.
Some CDNs and load balancers rotate or geographically vary the IP address returned based on where the query originates from, or during infrastructure maintenance - this is normal and doesn't indicate a problem.
Reverse DNS maps an IP address back to a hostname (the opposite direction of a normal lookup) - it's often used to identify which hosting provider or data center an IP belongs to, and is checked by some mail servers as a spam-fighting signal.
Yes, if the domain has both an A record (IPv4) and an AAAA record (IPv6) configured, both are reported - many sites today only have IPv4, which is completely normal.
The IP address alone doesn't reveal a precise physical location, but combined with the hosting provider identified via reverse DNS or WHOIS, you can generally determine which data center region a server likely resides in.
Multiple A records for load balancing or high availability is common - traffic is distributed across several servers, and this tool reports every address currently published for the domain.