What Is My IP? — IP Address Lookup
Your public IP instantly, and network details for any address or hostname.
🔗 Runs on our server: your browser cannot read reverse-DNS or network registration data itself. Network details come from public routing registries via DNS — no geolocation databases, no third-party API, and the address you look up is never contacted. Limited to 30 lookups per minute.
Your public IP address appears above the moment the page loads — the address websites actually see, after your router and any carrier NAT. Below it you can look up any other IP or hostname: reverse DNS, the network (AS) that announces it, the announced prefix, and the regional registry it's recorded with.
Details come from public routing registries over DNS, not from a geolocation database — so what you see is what's registered, honestly labelled, rather than a guessed city that's wrong half the time.
How to use IP Lookup — What Is My IP
- Read your own IP at the top — it's fetched automatically. Tap to copy it.
- To look up another address, type any IPv4, IPv6 or hostname and click Look up.
- Hostnames resolve first — you'll see every address the name points at, with details for the first.
- Private addresses are explained, not probed: enter 192.168.1.1 and the tool tells you what that range is.
Why is my IP different from my computer's?
Your computer has a private address (usually 192.168.x.x) handed out by your router; the router shares one public address across the whole household — that's the one shown here, and the one websites see. Carrier-grade NAT adds another layer on many mobile networks, sharing one public address across many customers.
IPv4 vs IPv6
If both appear in your life, that's normal — most connections now have both. IPv4 addresses (like 203.0.113.7) ran out years ago, which is why NAT exists; IPv6 addresses (long, with colons) are plentiful enough that your devices can each have their own. Websites see whichever one your connection used, and this page reflects exactly that.
What an AS number tells you
Every public address is announced by an autonomous system — an ISP, cloud, or large network with a number like AS15169 (Google). The AS answers "whose network is this?" far more reliably than geolocation answers "where is this?": the country shown here is where the address block is registered, which for a cloud provider or multinational ISP is not necessarily where the machine sits.
What reverse DNS reveals
The PTR record is the name an address maps back to — often an ISP's auto-generated hostname that leaks the region and connection type (cpe-…dsl.example-isp.net), sometimes a proper server name, often nothing. Mail servers care about it: sending mail from an address with no PTR is a fast route to the spam folder.
Related tools
To see which addresses a domain publishes, use the DNS lookup; to see who registered the domain itself, the WHOIS lookup.
Frequently asked questions
Is this the IP address websites see?
Yes — it's read from the connection your browser just made to this page, after your router's NAT and any carrier NAT. That's exactly the address any other website sees when you visit it.
Why doesn't it show my city?
By choice. IP geolocation is a guess from commercial databases, and it's wrong often enough — VPNs, mobile carriers, cloud egress — that publishing a confident-looking city does more harm than good. The country shown is where the address block is registered, which is honest data with an honest label.
Why does my IP change?
Most home connections get a dynamic address that can change on reconnection or after your ISP's lease expires; phones change addresses every time they move between towers and Wi-Fi. A fixed ("static") address is typically a paid extra. If it changes mid-session, that's your ISP's design, not a problem.
What can someone do with my IP address?
Less than folklore suggests. It identifies your ISP and rough region, and it can be rate-limited or blocked by services. It does not reveal your identity to strangers — connecting an address to a person requires the ISP's records, which takes legal process. The realistic concerns are targeted harassment (via DDoS) for people who stream publicly, and that's what VPNs address.
Why does 192.168.1.1 show no network details?
Because it's a private address — every home network has its own 192.168.x.x range, so there's no single owner to report and nothing to probe. The tool tells you which private range it belongs to and what that range is for instead.
What is reverse DNS and why is mine some random string?
It's the hostname an IP maps back to, set by whoever controls the address block — for home connections, your ISP, which auto-generates names like cpe-203-0-113-7.isp.example. That's normal. It matters mainly for mail servers, where a missing PTR gets outgoing mail marked as spam.