ProxyPortals

Free network tool

IP Lookup

Look up geolocation, ISP, ASN, and reverse DNS for any public IPv4 or IPv6 address. Private and reserved ranges are detected before Geo-IP. Your connection: 216.73.217.32.

Use lookups responsibly. Do not harass or track individuals. Rate limits apply to keep the service fair.

What an IP lookup tells you

An IP address identifies an interface on a network — usually a router, server, or customer endpoint on the public internet. An IP lookup combines public registry data with Geo-IP databases to estimate where that address is registered, which organization operates it, and sometimes a hostname from reverse DNS (PTR). It does not reveal a person’s name, street address, or precise GPS coordinates unless separate lawful processes apply to an ISP.

This tool accepts raw IPv4/IPv6 or a domain name. For domains, we resolve A/AAAA records via DNS-over-HTTPS, then look up the first address returned. That mirrors how many security dashboards answer “where does this site live?” while acknowledging that large sites may use many addresses behind load balancers.

How results are produced

When you submit a public address, our API queries Geo-IP providers and registries for country, region, city, postal hints, latitude/longitude, timezone, ISP, organization, and ASN. Coordinates are city-level estimates, not device GPS — treat the map link as a rough visual aid. Reverse DNS is fetched separately; many consumer IPs return generic PTR names while mail servers often show meaningful hostnames.

Before any Geo-IP call, the backend classifies special ranges: loopback, link-local, private RFC1918, multicast, CGNAT carrier space, and other reserved blocks. Those addresses are not globally unique on the internet, so geolocation would be meaningless. You will see a dedicated card explaining why.

Reading the location card

  • Country / region / city — where the IP block is registered or routed, not necessarily where you sit with a laptop.
  • ZIP — optional postal approximation; often blank outside North America.
  • ISP vs organization — access network name versus registered holder of the address block.
  • ASN — autonomous system number for BGP; useful to spot data-center vs residential networks.
  • PTR — reverse DNS hostname when published.

If latitude and longitude are present, an OpenStreetMap embed and link open a zoomed map. Map data © OpenStreetMap contributors — attribution is required when embedding maps elsewhere.

Accuracy limits and VPNs

Mobile carriers, CGNAT, and corporate VPNs routinely place the apparent city hundreds of kilometers away from the user. VPN exit nodes show the data-center location. Databases update on schedules ranging from daily to monthly, so newly allocated blocks may temporarily show the wrong country. The accuracy note on each result reminds you that coordinates are registry estimates, not surveillance-grade positioning.

Responsible use and rate limits

Public IP information is legal to query for troubleshooting, abuse reporting, and network engineering. It is not a license to stalk, threaten, or deanonymize people. Automated bulk scraping may hit per-minute rate limits; wait and retry rather than hammering the API. If you need continuous monitoring, use official registry feeds (RIPE, ARIN, APNIC, and others) or licensed Geo-IP products.

IPv4 vs IPv6 lookups

IPv4 exhaustion drove adoption of IPv6 with 128-bit addresses. Geo-IP coverage for IPv6 is improving but can be sparser than IPv4 for some regions. The same special-range rules apply: unique local and link-local IPv6 never receive public geolocation. Dual-stack sites may return only one resolved address when you enter a hostname — check DNS directly if you need every A and AAAA target.

When to use this vs other tools

Use this page for a quick human-readable snapshot. Use whois for allocation dates and contact handles. Use your own DNS resolver for authoritative records. Combine IP lookup with traceroute and TLS certificate inspection when debugging connectivity — no single tool tells the whole story.

Privacy on ProxyPortals

Lookups pass through our servers so we can cache responses briefly, enforce limits, and hide upstream API keys. We do not create accounts from your queries. Operational logging practices are described in our Privacy Policy. For maximum privacy on sensitive targets, query from your own infrastructure.

Abuse desk and fraud workflows

Security teams often correlate an abusive IP with ASN and country to decide whether to block a /24 or escalate to a provider. Geo-IP alone cannot prove identity — attackers rotate compromised hosts and VPN exits quickly. Pair lookups with logs (timestamps, user agents, session IDs) and report abuse to the owning ASN contact from WHOIS when appropriate. Document why you blocked an address so future analysts understand the context.

Developers debugging “wrong country” checkout flows should compare the visitor IP seen server-side with what this tool shows for the same address. If they differ, you may be reading a proxy header incorrectly or testing from a VPN while production users are not.

FAQ

How do I look up an IP address?

Paste an IPv4 or IPv6 address (or a domain) into this tool and run the lookup. You can also click Use my IP to fill your current public address.

How accurate is IP geolocation?

It is usually accurate to country and often to city for residential broadband, but it can be wrong for mobile, CGNAT and VPN exits. Treat coordinates as approximate, not GPS.

Can an IP lookup show someone's exact address?

No. Public Geo-IP data does not reveal a street address or apartment. Only an ISP — typically under legal process — can map an IP to a subscriber account.

Why is the location wrong?

ISPs register address blocks to hubs, databases lag, and CGNAT shares one public IP across many users. VPNs also move your apparent location to the exit node.

What is an ASN?

An Autonomous System Number identifies a network operator on the internet (an ISP, cloud provider or enterprise). It helps classify where traffic originates.

What does ISP vs organization mean?

ISP is usually the access provider name. Organization may be the same company or a customer that owns the block. Both come from public registry data.

Is looking up an IP legal?

Yes. Querying public registry and Geo-IP data is legal. Do not use lookups to harass, threaten or dox people.

What is reverse DNS?

Reverse DNS (PTR) returns a hostname for an IP when the owner published one. Many consumer IPs have generic PTR names; servers often have meaningful ones.

What is a private IP and why can't it be located?

Private and reserved ranges are not unique on the public internet, so there is no global location for them. This tool detects those ranges before calling Geo-IP.

How do I look up the IP of a website?

Enter the domain name. The tool resolves A/AAAA via DNS-over-HTTPS, then looks up the first address and shows which IP was used.

Last updated: October 2026