Why is my location off?

GeoIP databases map IP addresses to approximate locations based on ISP registration data, not GPS. Accuracy varies from city-level to country-level depending on the provider and region. VPNs and mobile carriers can shift the reported location significantly.

CIDR (Classless Inter-Domain Routing) is a compact notation for IP address ranges. For example, 192.168.1.0/24 means all addresses from 192.168.1.0 to 192.168.1.255 - the number after the slash indicates how many bits are fixed in the network prefix.

What is the difference between IPv4 and IPv6?

IPv4 uses 32-bit addresses (about 4.3 billion total), while IPv6 uses 128-bit addresses (practically unlimited). IPv6 was designed to solve address exhaustion and simplify routing, but both protocols are widely used today.

A PTR (pointer) record maps an IP address back to a hostname - the reverse of a regular DNS lookup. It is commonly used to verify mail server identity and to add context in server logs and traceroutes.

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IP address

Look up any IPv4 or IPv6 address to find its geolocation, ISP, ASN and abuse contact. Useful for investigating suspicious traffic, verifying VPN exit nodes or checking IP reputation.

IP information

IP	216.73.216.109
DNS PTR	—
Provider	Amazon.com
ASN	AS16509
AS name	AMAZON-02
Organization	Anthropic, PBC
Geo	Columbus, Ohio, United States
Timezone	America/New_York
Lat / Lon	39.9625, -83.0061

WHOIS

Amazon.com, Inc. AMAZO-4 (NET-216-73-208-0-1) 216.73.208.0 - 216.73.219.255
Anthropic, PBC AWS-ANTHROPIC (NET-216-73-216-0-1) 216.73.216.0 - 216.73.219.255

What it is

An IP address identifies a host in a network. There are IPv4 and IPv6, plus private and public ranges.

How it works

Check address type, geo, AS affiliation and WHOIS. Private ranges have no public geo/WHOIS.

Examples

Private IPv4: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16.
Loopback: 127.0.0.0/8.

Limitations & notes

GEOIP is approximate and depends on databases. Proxies/VPN may distort detection.

FAQ

Why is my location off? GeoIP databases map IP addresses to approximate locations based on ISP registration data, not GPS. Accuracy varies from city-level to country-level depending on the provider and region. VPNs and mobile carriers can shift the reported location significantly.
What is CIDR? CIDR (Classless Inter-Domain Routing) is a compact notation for IP address ranges. For example, 192.168.1.0/24 means all addresses from 192.168.1.0 to 192.168.1.255 - the number after the slash indicates how many bits are fixed in the network prefix.
What is the difference between IPv4 and IPv6? IPv4 uses 32-bit addresses (about 4.3 billion total), while IPv6 uses 128-bit addresses (practically unlimited). IPv6 was designed to solve address exhaustion and simplify routing, but both protocols are widely used today.
What is PTR record? A PTR (pointer) record maps an IP address back to a hostname - the reverse of a regular DNS lookup. It is commonly used to verify mail server identity and to add context in server logs and traceroutes.

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