Instantly see your own public IPv4 and IPv6 address, ISP, city, timezone, and coordinates, look up any IP's location and network details, detect VPN/proxy/Tor and datacenter connections, convert and calculate IP ranges, and run batch lookups on hundreds of IPs at once — all free, with no API key.
Most 'what is my IP' sites stop at showing a single IPv4 address and a rough city name. This tool starts there — detecting both your IPv4 and IPv6 address, ISP, city, region, postal code, timezone with a live-ticking local clock, and exact coordinates plotted on an embedded map — but goes considerably further: you can look up any other IP address with the same depth of detail, including its autonomous system number, connection type, and a proxy/VPN/Tor detection flag; run a full batch of lookups across a pasted list of addresses and export the results as a CSV; and reach for a set of genuinely useful IP math tools — binary and decimal conversion, CIDR range expansion, subnet mask calculation, and private-range checking — without leaving the page or opening a separate calculator.
Your IPv4 and IPv6 addresses are read directly from the connection your browser makes to load this page — specifically, from the forwarding headers set by the network infrastructure your request passes through — and then handed to a geolocation lookup to resolve ISP, location, and network details. Because IPv4 and IPv6 are entirely separate, independently-routed addressing systems, a dual-stack connection (the norm on most modern networks) can legitimately show two different addresses at once; if your network doesn't yet support IPv6, that field will correctly show as unavailable rather than guessing or displaying a stale value.
Every IP address this tool resolves is classified as residential, datacenter, or mobile based on how its address block is registered — residential addresses belong to consumer ISPs serving homes and small offices, datacenter addresses belong to cloud and hosting providers (exactly where servers, bots, and VPN endpoints run from), and mobile addresses belong to cellular carrier networks that often share a single address across many simultaneous users via carrier-grade NAT. Alongside connection type, a proxy/VPN/Tor flag draws on continuously updated lists of known anonymization infrastructure — together, these two signals are the same basic building blocks fraud-detection and access-control systems use to flag suspicious traffic, made directly available here for your own investigation, debugging, or curiosity.
The IP Tools tab covers the handful of IPv4 calculations that come up constantly in networking work but are tedious to do by hand: converting a dotted-decimal address like 192.168.1.10 into its 32-bit binary representation (useful for understanding exactly how subnetting divides an address into network and host portions) and into a single decimal integer (the same numeric value many systems store an IP as internally); expanding CIDR notation like 10.0.0.0/16 into its full network address, broadcast address, first and last usable host, and total address count; and checking whether a given address falls inside one of the reserved or private ranges defined by IETF standards (RFC 1918 private networks, RFC 3927 link-local addresses, RFC 5737 documentation ranges, and others) — the same ranges that explain why addresses like 192.168.x.x or 10.x.x.x never appear in a public IP lookup.
Investigating a list of IPs one at a time — from a server access log, a spreadsheet of failed login attempts, or a list of allowed addresses you're auditing — is exactly the workflow the Batch Lookup tab is built for. Paste up to 100 addresses at once, one per line, and every valid address is resolved in a single request; the results land in a sortable table showing location, ISP, and connection type for each, and the whole set can be exported as a CSV for further analysis in a spreadsheet, ticket, or report.
Looking up your own IP or any other address sends only that address to the underlying free geolocation provider (ip-api.com) for resolution — no other data about you, your device, or your browsing is collected, stored, or logged by this tool. IP address lookups are also inherently one-directional and read-only: nothing about looking up an address changes, blocks, or otherwise affects that address or the device using it.
IP Address Lookup pairs naturally with these developer tools for networking, debugging, and request analysis.