IP Lookup

Look up detailed information about any IP address including geolocation, ISP, ASN, timezone, and organization.

Lookup

IP Address or Domain

Examples:

Lookup Results

IP Address

IP Version

Type

Reverse DNS

Address Classification

Geolocation data requires a server-side GeoIP database. This client-side tool provides IP classification and basic validation. For full geolocation, ISP, and ASN data, server-side integration is required.

Reserved IP Address Ranges

CIDR	Purpose	RFC
10.0.0.0/8	Private network (Class A)	RFC 1918
172.16.0.0/12	Private network (Class B)	RFC 1918
192.168.0.0/16	Private network (Class C)	RFC 1918
127.0.0.0/8	Loopback	RFC 1122
169.254.0.0/16	Link-local (APIPA)	RFC 3927
224.0.0.0/4	Multicast	RFC 5771
240.0.0.0/4	Reserved for future use	RFC 1112

How to Use

1
Enter IP Address or Domain
Type any IPv4 address (e.g., 8.8.8.8), IPv6 address, or domain name into the lookup field. The tool accepts both formats automatically.
2
Review Geolocation Results
Examine the returned data including country, region, city, latitude/longitude, ISP, and ASN. Note that geolocation accuracy varies by IP type — ISP-assigned IPs are typically accurate to the city level.
3
Explore Network Details
Check the ASN, organization name, and CIDR range to understand the network ownership. Use timezone and currency fields for application logic requiring location-aware behavior.

About

IP address lookup tools provide visibility into the network infrastructure underlying internet communication. Every device connected to the internet uses an IP address — either IPv4 or IPv6 — to send and receive data. By querying geolocation databases and routing registries, an IP lookup reveals the geographic location, network operator, and organizational ownership associated with any IP address. This information serves network engineers diagnosing connectivity issues, security teams investigating suspicious traffic, and developers building location-aware applications.

The data returned by an IP lookup draws from multiple authoritative sources. Geolocation data comes from databases maintained by companies like MaxMind, IP2Location, and DB-IP, which correlate IP ranges to physical locations using a combination of registration data, network traceroutes, and user-submitted corrections. ASN information comes from the five Regional Internet Registries (ARIN, RIPE NCC, APNIC, LACNIC, AFRINIC), which maintain authoritative records of IP block assignments and autonomous system ownership under IANA oversight.

Practical applications of IP lookup span cybersecurity, content localization, and fraud prevention. Security operations centers use IP lookup to contextualize log entries and identify traffic originating from known malicious infrastructure. E-commerce platforms use geolocation to comply with regional regulations and customize user experiences. Fraud detection systems flag transactions from IP addresses inconsistent with the user's billing address. Understanding both the capabilities and limitations of IP geolocation — particularly its reduced accuracy for VPN, proxy, and mobile traffic — is essential for building reliable systems that depend on it.

FAQ

How accurate is IP geolocation?

IP geolocation accuracy depends on the IP type and database quality. For residential and mobile IPs, country-level accuracy typically exceeds 99%, while city-level accuracy ranges from 50–80%. ISP and datacenter IPs are often accurate to city level or better. Accuracy degrades for VPN users, Tor exit nodes, and satellite internet providers, which may report a location hundreds or thousands of miles from the actual user. Commercial geolocation databases like MaxMind GeoIP2 are updated regularly to maintain accuracy.

What is an ASN and why does it matter?

An Autonomous System Number (ASN) is a unique identifier assigned to a network that exchanges routing information with other networks on the internet using the Border Gateway Protocol (BGP). Each ASN represents an autonomous system — a collection of IP prefixes under a single administrative domain, such as an ISP, hosting provider, or large enterprise. ASNs help diagnose network routing issues, identify the organization controlling an IP range, and detect traffic from specific network operators. IANA delegates ASN assignment to Regional Internet Registries (RIRs) such as ARIN, RIPE NCC, and APNIC.

Can I look up private or reserved IP addresses?

Private IP addresses (RFC 1918 ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and other reserved ranges (loopback 127.0.0.0/8, link-local 169.254.0.0/16) are not routable on the public internet and have no geolocation data. Attempting a lookup will return a result indicating the address is private or reserved. These addresses are used for internal networks and are translated to public IPs via NAT when accessing the internet.

What is the difference between IPv4 and IPv6?

IPv4 uses 32-bit addresses expressed as four decimal octets (e.g., 192.168.1.1), providing approximately 4.3 billion unique addresses. IPv6 uses 128-bit addresses expressed in hexadecimal notation (e.g., 2001:db8::1), providing 3.4 × 10³⁸ addresses — effectively unlimited. IPv4 exhaustion was declared in various regions between 2011 and 2019, driving the transition to IPv6. Many organizations run dual-stack configurations supporting both protocols simultaneously. IPv6 also includes built-in support for IPsec and eliminates the need for NAT in most deployments.

Why might an IP show the wrong country or city?

IP geolocation databases can show incorrect locations for several reasons. Corporate VPNs route traffic through data centers in different cities or countries than the user. Content Delivery Networks (CDNs) and anycast routing assign the same IP to servers in multiple geographic locations simultaneously. Mobile carriers use centralized gateways that may not reflect the device's actual location. Additionally, some ISPs allocate IP ranges across regions without updating geolocation databases promptly. If accuracy is critical, device GPS or user-provided location data is more reliable than IP-based geolocation.