Networking

Look up geolocation and network information for any IPv4 or IPv6 address.

Calculate subnet masks, network ranges, broadcast addresses, and host counts.

Validate IPv4 addresses and check if they are public, private, or reserved.

Validate IPv6 addresses and expand compressed notation.

Check if a TCP port is open on a remote host.

Send ICMP echo requests to test host reachability and latency.

Trace the network path to a destination host.

Query WHOIS records for domains and IP address blocks.

Look up Autonomous System Number details for an IP or ASN.