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IP lookup
Understand an IPv4 or IPv6 address and find its registered network. Registry information is not a precise physical location.
Understand an IPv4 or IPv6 address and find its registered network. Registry information is not a precise physical location.
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An IP lookup helps you understand an address you already have. Enter a complete IPv4 or IPv6 address to classify it and, for a public address, retrieve the registered network from its regional internet registry. If you want your own current public address, start with the My IP homepage. An IP lookup of a typed address is a different task from observing the source of your browser's present connection.
This IP lookup accepts ordinary dotted-decimal IPv4 and standard IPv6 notation. It rejects full URLs, ports, subnet suffixes, abbreviated IPv4 values, and interface zone identifiers. Copy only the address from a log or support message. If your input contains a prefix such as /24, use the subnet calculator to inspect that network range. A domain name belongs in DNS lookup, which can return addresses published for the name.
For public addresses, the IP lookup finds the responsible registry using the IANA RDAP directory and requests the relevant network record. It displays the record source and observation time. For private and other special-use ranges, it provides local classification instead of pretending to identify an internet subscriber. The distinction is useful when a log contains an internal gateway, a CGNAT address, or a documentation example.
The normalized address and address family describe the input itself. The registered network name and handle identify the returned registry object. Start and end addresses describe that object's range, which can be larger than a particular customer's assignment. An IP lookup can show an allocation or reassignment record depending on the registry's data. Read the record type and source rather than assuming every returned organization is the individual using the connection.
Registration country is labeled separately from physical location. A registry record can describe an organization's administrative country or another allocation attribute. It does not necessarily locate the device, server, or person behind the address. This IP lookup does not convert that field into a map pin or a street address. When no country is supplied, the tool says it is not provided instead of filling in a plausible-looking guess.
An address can be used through an internet provider, mobile gateway, company, VPN exit, or hosting platform. The registered network holder can be several organizational layers away from the person who sent a request. An IP lookup cannot establish a person's name from an address alone. Avoid identifying or accusing someone solely because a public registry associates the range with an organization or region.
Shared connections make that limitation especially important. Multiple devices can share one home router's public IPv4 address, and carrier-grade NAT can share an address across customers. A VPN exit may also serve many unrelated users. The IP lookup can still be useful for network context, but it does not reveal how many users shared that address at a particular second or which user produced a particular event.
Private addresses are used inside local networks and can be reused independently by many organizations. Loopback addresses refer back to the local system. Link-local addresses have limited scope. Documentation ranges are reserved for examples. This IP lookup identifies common special-use categories so you do not mistake an internal address for a publicly assigned subscriber address. The classification is based on the address range, not on a live scan.
For instance, an IP lookup of 192.168.1.1 cannot tell which home router uses that value. Many routers do. A log containing a private address may reflect a local connection or an upstream proxy, and the log's meaning depends on how it was produced. Do not trust arbitrary forwarding headers from the internet as evidence of a visitor's true source. The system collecting those headers must know which proxies it can trust.
Registration databases and geolocation databases answer different questions. A city estimate requires a suitable geolocation source with its own update schedule and uncertainty. An IP lookup result from a registry is not a replacement for that dataset. This tool currently emphasizes address facts and registration information. It does not provide a fabricated city, exact coordinates, or an unsupported confidence percentage when those data are absent.
The result also does not establish whether a network is trustworthy. A hosting allocation is not automatically malicious, and a residential allocation is not automatically safe. Reputation systems use separate signals, observation windows, and definitions. Do not convert an IP lookup into a fraud score without knowing the evidence behind that score. For an abuse investigation, preserve the relevant events and assess behavior alongside network context.
A registry can be unavailable, rate-limit requests, return no matching record, or refer a query to an endpoint this tool does not support. The IP lookup reports an error instead of replacing the result with a stale or unrelated record. If a lookup fails, verify the input and retry after a reasonable interval. A missing response does not prove that an address is unallocated or that its traffic is suspicious.
Network assignments can change over time. Today's IP lookup is a current registration observation, not a historical ownership report. If you investigate an event from several months ago, you need evidence appropriate to that time. Save the event timestamp and the source of any historical dataset you use. Present-day registration can provide context but cannot reliably reconstruct every prior lease or customer assignment.
No ordinary public lookup reliably identifies an exact home. Even commercial geolocation estimates can point to a network exit or a broad area. Registration information is more limited still. An IP lookup should help you understand a network, not encourage false precision. A street-level marker without supporting evidence can be misleading even when the underlying country estimate happens to be correct.
Your retail provider may use infrastructure registered to a parent company, wholesale carrier, acquired business, or partner. A VPN or relay can show its exit network instead of your home provider. Compare the address with a fresh browser observation and check your network settings. The IP lookup identifies the returned registered network; the commercial relationship between that network and your service may require additional confirmation.
No. Reverse DNS lookup requests PTR records for an address. The hostname in a PTR record is managed separately from network registration and may be absent or outdated. An IP lookup reads network context from the responsible registry. A returned hostname is not proof of legal ownership, and a missing PTR record does not mean that the address is unused.
Yes. This IP lookup supports IPv6 and normalizes compressed notation. IPv4-mapped IPv6 inputs are treated as their equivalent IPv4 address so a mapped socket representation is not mistaken for evidence of native IPv6 connectivity. To test whether your browser can reach an IPv6-only destination, use the IPv6 test. Classifying a written address and measuring a live route are separate operations.
Record the exact address, event time, lookup time, registry source, and relevant network fields. State whether you need registration, location, reputation, or routing information. A focused IP lookup report makes its evidence clear and its limits visible. Review copied results before posting them publicly, and avoid attaching credentials or unrelated personal information from the original log.
Registry selection follows the IANA RDAP bootstrap registries and IANA's address allocation directory. ARIN's RDAP documentation explains structured registration records. Address handling also draws on RFC 1918, RFC 6598, and RFC 5952. An IP lookup should always identify which kind of evidence it is presenting.