IP Address Lookup
Analyse any IPv4 or IPv6 address in your browser: address type, private or public range, integer, hex, binary, reverse DNS and CIDR block. It runs entirely in your browser — no signup, no installation, and nothing you paste or drop leaves your device.
Address analysis runs entirely on your device. The optional location lookup sends only the IP address you typed to the public ipwho.is interface; no account is needed and nothing is stored.
What the IP Address Lookup Does
This tool reads an IPv4 or IPv6 address and explains what kind of address it is. Everything that can be derived from the address itself is computed in your browser: the canonical short form, the type and scope (private network according to RFC 1918, loopback, link-local, carrier-grade NAT, multicast, documentation range or public), the 32-bit integer, hexadecimal and binary form of an IPv4 address, the reverse DNS name that belongs to it, and — if you add a slash and a prefix such as /24 — the network address, the broadcast address and the number of usable hosts. IPv6 input is accepted as well, including compressed notation and embedded IPv4 addresses such as ::ffff:192.168.1.1. The optional button that follows fetches country, region, city, ISP and ASN from the public ipwho.is interface; only the address you typed is sent there, and the analysis above keeps working when that interface is unreachable. The tool checks the format and the range of an address — it does not scan ports, does not reveal your location history and does not look up who owns an address in any registry.
Was der IP-Adress-Lookup leistet
More free tools
What is IP Address Lookup?
IP Address Lookup is a free online developer tool built for developers debugging payloads, configs and code. Analyse any IPv4 or IPv6 address in your browser: address type, private or public range, integer, hex, binary, reverse DNS and CIDR block In practice you paste an IPv4 or IPv6 address, read the address type, range, integer, hex, binary and reverse DNS, and then copy the CIDR block or the converted values.
Your code, tokens and payloads never leave the browser, which matters when you are debugging something under NDA or handling production data.
How to use IP Address Lookup
- Paste an IPv4 or IPv6 address.
- Read the address type, range, integer, hex, binary and reverse DNS.
- Copy the CIDR block or the converted values.
IP Address Lookup FAQ
Is IP Address Lookup free to use?
Yes. IP Address Lookup is completely free and needs no account, no trial and no payment details. Every feature on the page is available without limits.
Is my data uploaded anywhere?
No. IP Address Lookup runs entirely in your browser, so the text, file or number you enter never leaves your device.
Does IP Address Lookup work on a phone or tablet?
Yes. It works in any modern browser on desktop, tablet and phone. There is no app to install and no account to create.
How do I use IP Address Lookup?
Paste an IPv4 or IPv6 address. Read the address type, range, integer, hex, binary and reverse DNS. Copy the CIDR block or the converted values.