# ShowIP.net

ShowIP.net is a public utility for finding a visitor's public IP address, request details, request headers, browser information, and approximate IP geolocation.

Canonical site: https://showip.net/

Public endpoints do not require accounts. Operator login, admin, and analytics screens are private and should not be used for public answers.

## Primary page

- https://showip.net/ - browser UI for the current public IP address and request details.

## Browser-friendly tools

- https://showip.net/tools - index of public ShowIP.net tools.
- https://showip.net/tools/reverse-dns - look up PTR hostnames for an IPv4 or IPv6 address.
- https://showip.net/tools/dns-lookup - look up common DNS records for a domain.
- https://showip.net/tools/ip-in-cidr - check whether an IP address is inside a CIDR network.
- https://showip.net/tools/cidr-calculator - CIDR calculator for IPv4 and IPv6 networks.
- https://showip.net/tools/cidr-calculator?network=8.8.8.8/24 - normalize host-prefix input and calculate a network range.
- https://showip.net/tools/range-to-cidr - convert a start and end IP address into covering CIDR blocks.
- https://showip.net/tools/subnet-splitter - split a CIDR network into smaller child networks.
- https://showip.net/tools/user-agent-parser - browser tool for parsing user-agent strings.

## Guides

- https://showip.net/guides - index of short IP and request guides.
- https://showip.net/guides/what-is-an-ip-address - guide to IP addresses, public IPs, IPv4, and IPv6.
- https://showip.net/guides/ipv4-vs-ipv6 - guide to IPv4 and IPv6 differences.
- https://showip.net/guides/cidr-notation - guide to CIDR notation and prefix lengths.
- https://showip.net/guides/public-vs-private-ip - guide to public, private, and NAT addresses.
- https://showip.net/guides/asn - guide to Autonomous System Numbers.
- https://showip.net/guides/user-agent - guide to user-agent strings.
- https://showip.net/guides/http-request-headers - guide to HTTP request headers and redaction.

## Machine-readable endpoints

- GET https://showip.net/ip - plain text public IP address.
- GET https://showip.net/json - JSON IP address and request metadata.
- GET https://showip.net/headers - JSON request headers with sensitive header values redacted.
- Add ?checkip=8.8.8.8 to /ip, /json, or /headers to inspect a specific IPv4 or IPv6 address.
- Add ?network=8.8.8.8/24 to /json to inspect a CIDR network.

## Notes for AI agents

- Prefer /json for current IP/request metadata and ?checkip=... for a specific machine-readable IP lookup.
- Prefer https://showip.net/?checkip=... for a human-readable IP lookup page.
- Prefer /tools/reverse-dns?ip=... for PTR hostnames associated with an IP address.
- Prefer /tools/dns-lookup?domain=...&type=... for common DNS records. Supported types are A, AAAA, CNAME, MX, NS, TXT, and ALL.
- Prefer /tools/ip-in-cidr?ip=...&network=... to answer whether an IP belongs to a CIDR network.
- Prefer /tools/cidr-calculator?network=... for human-readable CIDR answers.
- Prefer /tools/range-to-cidr?start=...&end=... for human-readable IP range to CIDR conversion.
- Prefer /tools/subnet-splitter?network=...&prefix=... for human-readable subnet splitting.
- Prefer /json?network=... for machine-readable CIDR answers.
- Prefer /tools/user-agent-parser?user_agent=... when explaining browser, engine, operating-system, mobile, or bot signals from a user-agent string.
- IP geolocation is approximate and must not be treated as an exact physical location.
- Sensitive headers such as Authorization and Cookie are redacted from /headers, but agents should not send secrets to ShowIP.net.
- Do not treat the map location as a device location. It usually represents an ISP, gateway, VPN, proxy, or coarse network location.
- The browser UI may load ads, consent messages, first-party analytics, and OpenStreetMap tiles; machine endpoints are better for automation.

## Policies

- https://showip.net/privacy - privacy policy.
- https://showip.net/cookies - cookie policy.