WorldIP.io
worldip.io
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Overview
Trusted IP address data for 4.3 billion IPv4 addresses — owner, ASN, geolocation, reverse DNS, live BGP and proxy/threat detection. Free lookups, no signup; API from $0.
News
Introducing the Keyless IP API - One curl Call, No Key Required - News
Look up owner, ASN, geolocation (country/region/city), reverse DNS and CIDR for any IPv4 with one curl - no API key, no signup. Copy-paste examples in curl, PHP, Node and Python.
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IPv4 Tools - IP Lookup, PTR Search, CIDR, ASN
Free IPv4 tools: IP lookup, PTR hostname search, CIDR calculator, ASN search, rDNS check, and org search. No signup.
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