IP Lookup
Check any IPv4 or IPv6 address's type, network (ASN), provider, approximate country, reverse DNS and blacklist status — all in one lookup.
About this tool
This is the broadest IP lookup on the site — one search covering an address's basic type, its network (ASN) and provider, an approximate country, reverse DNS hostname, and blacklist status, all in one page. For a version-specific entry point, see IPv4 Lookup or IPv6 Lookup; for the regional registry WHOIS angle specifically, see IP WHOIS; for blacklist status on its own, see IP Blacklist Checker.
Where this data comes from
Type classification (public/private/loopback/etc.) is determined directly from the address itself against IANA's published special-purpose address registries. ASN, provider, network range and country come from Team Cymru's IP-to-ASN lookup service — a live query against real routing/allocation data, not a static or estimated database. Blacklist results come from live queries against a small, curated set of DNS-based block lists (see IP Blacklist Checker for the full list and its own caveats). This tool does not attempt city-level or precise geolocation — only the country associated with the network's registration, which is a materially different and less precise thing than a device's actual physical location.
Why does a private IP show no ASN or provider?
Private, loopback, link-local and other non-public ranges aren't announced on the public internet, so they have no associated network operator or provider to look up — this isn't a lookup failure, it's expected for that type of address.
Does a blacklist listing mean this IP is malicious?
Not on its own. Block lists vary in accuracy and what behavior triggers a listing, and shared hosting or dynamic residential ranges can carry a previous occupant's listing. Treat a listing as one input worth investigating further, not a verdict.
Related tools: