IP Address and Domain Lookup Online

The 101IP IP/Domain Info tool helps you find out in seconds who owns an IP address or network, where it is approximately located, which ISP serves it and what address range it belongs to.

What can you find out about an IP address?

• City, region and country — approximate location by IP;
• ISP (provider) — the company that owns the address or pool;
• ASN and AS name — autonomous system and operator network;
• IP range and CIDR — the network the IP belongs to;
• Coordinates and timezone — additional geolocation data;
• mobile / proxy / hosting hints — type of address origin.

Supported input formats

• plain IP: 203.0.113.5 or 2001:db8::1;
• domain: example.com (IDN domains supported);
• URL: https://example.com/path?param=1;
• host:port and IPv6 in brackets: [2001:db8::1]:443.

Bookmark 101IP and use it whenever you need to look up IP address or domain information online.