Result will appear here
Tips for IP checks
Local classification (private, loopback, CGNAT) works offline in the browser.
Geo and ASN come from a third-party HTTPS API and can be approximate.
Never use geo-IP alone for access control or fraud decisions.
Paste only addresses you are allowed to investigate.
IPv6 classification here is limited — focus on format and lookup fields.
Classify an IP, then look up public whois-style facts
Address class is computed locally. Optional city/ASN fields come from a public IP info API when the lookup succeeds.
First the tool labels the address locally (private, loopback, public). Then it may query a public IP info API for country and ASN.
Paste an address you are debugging — not a way to stalk people. Geo is approximate.
Check an IP address
Enter an IPv4 or IPv6 address
Hostnames belong in DNS/WHOIS tools, not here.
Read the local class
Private and loopback ranges never need a geo API to explain themselves.
Use geo fields as a hint
ISP names help tickets; they are not a courtroom location.
IP checker FAQ
Is every field computed locally?
Version and private/public class are local. City/ASN come from ipwho.is when the lookup succeeds.
Why did geo fail?
The public API may be blocked, rate-limited, or unreachable. Local classification still remains.
Can I look up my own IP without typing it?
Use My IP first, then paste that public address here if you want ASN details.