Network tools
Diagnostics that are safe to offer publicly: measurements your own browser makes, a port check of your own connection only, and lookups against public registries. No scans of other networks, no pings of arbitrary hosts.
11 tools
- My IP address in detailYour address, network, location estimate, browser and connection on one page.
- IP Range LookupEvery block an address falls in: registry allocation, BGP route, location range.
- Latency TestRound-trip time from your browser to our server.
- Port CheckerIs a port on your own connection reachable from the internet?
- MAC Address LookupThe vendor a MAC address prefix is registered to (IEEE).
- IP Range to CIDRIn your browserConvert an address range into the smallest set of CIDR blocks.
- ASN LookupHolder, registry and every prefix an AS announces.
- BGP Prefix LookupWho announces a prefix, what covers it and its more-specifics.
- CIDR CalculatorIn your browserNetwork, broadcast, masks and host counts for any prefix.
- Subnet CalculatorIn your browserSplit networks into subnets, IPv4 and IPv6.
- IP Overlap CheckerIn your browserFind overlapping networks in a list of CIDR blocks.