What is this tool?
This IP address lookup shows who operates an IPv4 or IPv6 address and what kind of address it is. For public addresses it finds the reverse DNS hostname, the ASN and network name (via Team Cymru's DNS service), the announced prefix, registry and country, and the owner and abuse contact from the regional internet registry's RDAP record. It recognises private, loopback (all of 127.0.0.0/8), link-local, carrier-grade NAT, documentation, benchmarking, multicast and other special ranges, and unpacks IPv4-mapped, NAT64, 6to4 and Teredo IPv6 addresses. Type a hostname to see all of its addresses, or a CIDR range such as 10.0.0.0/22 for the subnet calculator (network, netmask, wildcard, broadcast, usable hosts). Leave the box empty or press My IP to see your own address and the approximate location Cloudflare sees for your connection. Binary, integer, hexadecimal and expanded forms each have a Copy button.
How to Use
- Type an IPv4 or IPv6 address, a hostname or a CIDR range, or leave the box empty for your own IP.
- Press Get IP Info or Enter.
- Read the summary: hostname, ASN, prefix, owner and abuse contact, or the special-range note for private and reserved addresses.
- For a range, read the subnet calculator; for a hostname, click any of its addresses.
- Copy single values, the representations, or a share link.
Frequently Asked Questions
Does this tool show the location of an IP?
For any public IP it shows the country from the registry record, which is where the network is registered, not where the device is. For your own IP it also shows the approximate city and region Cloudflare sees for your connection. It does not track or store anything.
How does it find my own IP address?
My IP asks the Wivrix API, which returns the address and approximate location Cloudflare sees for your request. If that is unavailable it reads Cloudflare's /cdn-cgi/trace. A VPN or proxy will show its own address instead.
Where do the ASN and owner come from?
The ASN, prefix and registry come from Team Cymru's public IP-to-ASN service, queried as DNS TXT records over DNS-over-HTTPS. The owner and abuse contact come from the RDAP server of the regional internet registry (ARIN, RIPE NCC, APNIC, LACNIC or AFRINIC).
Why does Reverse DNS show no PTR record?
The address has no PTR record in DNS. Many home and cloud IPs do not have one, and private addresses do not resolve on the public internet.
What is 100.64.0.0/10?
Carrier-grade NAT space (RFC 6598). ISPs and mobile networks use it between your router and their NAT, so many customers share one public IP.
Other tools
There are more calculators, converters and editors on Wivrix. If something is missing, tell us.