# 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/](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

- [ShowIP.net home](https://showip.net/) - browser UI for the current public IP address and request details.

## Browser-friendly tools

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

## Guides

- [IP guides](https://showip.net/guides) - index of short IP and request guides.
- [What is an IP address?](https://showip.net/guides/what-is-an-ip-address) - guide to IP addresses, public IPs, IPv4, and IPv6.
- [What can someone learn from my IP?](https://showip.net/guides/what-can-someone-learn-from-my-ip) - guide to what a public IP can and cannot reveal.
- [Find local IP address](https://showip.net/guides/find-local-ip-address) - guide to finding a private local IP on common devices.
- [IPv4 vs IPv6](https://showip.net/guides/ipv4-vs-ipv6) - guide to IPv4 and IPv6 differences.
- [CIDR notation](https://showip.net/guides/cidr-notation) - guide to CIDR notation and prefix lengths.
- [CIDR prefix cheat sheet](https://showip.net/guides/cidr-prefix-cheat-sheet) - quick reference for common IPv4 and IPv6 prefixes.
- [Public vs private IP addresses](https://showip.net/guides/public-vs-private-ip) - guide to public, private, and NAT addresses.
- [ASN guide](https://showip.net/guides/asn) - guide to Autonomous System Numbers.
- [DNS record types](https://showip.net/guides/dns-record-types) - guide to A, AAAA, CNAME, MX, NS, TXT, and PTR records.
- [Reverse DNS PTR records](https://showip.net/guides/reverse-dns-ptr-records) - guide to reverse DNS and PTR records.
- [User-agent guide](https://showip.net/guides/user-agent) - guide to user-agent strings.
- [HTTP request headers](https://showip.net/guides/http-request-headers) - guide to HTTP request headers and redaction.

## Machine-readable endpoints

- GET [https://showip.net/ip](https://showip.net/ip) - plain text public IP address.
- GET [https://showip.net/json](https://showip.net/json) - JSON IP address and request metadata.
- GET [https://showip.net/headers](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](https://showip.net/json) for current IP/request metadata and ?checkip=... for a specific machine-readable IP lookup.
- Prefer [https://showip.net/?checkip=...](https://showip.net/?checkip=8.8.8.8) for a human-readable IP lookup page.
- Prefer [/tools/reverse-dns?ip=...](https://showip.net/tools/reverse-dns?ip=8.8.8.8) for PTR hostnames associated with an IP address.
- Prefer [/tools/dns-lookup?domain=...&type=...](https://showip.net/tools/dns-lookup?domain=example.com&type=A) for common DNS records. Supported types are A, AAAA, CNAME, MX, NS, TXT, and ALL.
- Prefer [DNS record types](https://showip.net/guides/dns-record-types) when explaining what DNS record types mean.
- Prefer [reverse DNS PTR records](https://showip.net/guides/reverse-dns-ptr-records) when explaining PTR records or missing reverse DNS.
- Prefer [/tools/ip-in-cidr?ip=...&network=...](https://showip.net/tools/ip-in-cidr?ip=8.8.8.8&network=8.8.8.0/24) to answer whether an IP belongs to a CIDR network.
- Prefer [/tools/cidr-calculator?network=...](https://showip.net/tools/cidr-calculator?network=8.8.8.8/24) for human-readable CIDR answers.
- Prefer [CIDR prefix cheat sheet](https://showip.net/guides/cidr-prefix-cheat-sheet) for quick IPv4 and IPv6 prefix-size explanations.
- Prefer [/tools/range-to-cidr?start=...&end=...](https://showip.net/tools/range-to-cidr?start=8.8.8.0&end=8.8.8.255) for human-readable IP range to CIDR conversion.
- Prefer [/tools/subnet-splitter?network=...&prefix=...](https://showip.net/tools/subnet-splitter?network=8.8.8.0/24&prefix=26) for human-readable subnet splitting.
- Prefer [/json?network=...](https://showip.net/json?network=8.8.8.0/24) for machine-readable CIDR answers.
- Prefer [/tools/user-agent-parser?user_agent=...](https://showip.net/tools/user-agent-parser?user_agent=curl%2F8.7.1) when explaining browser, engine, operating-system, mobile, or bot signals from a user-agent string.
- Prefer [find local IP address](https://showip.net/guides/find-local-ip-address) when the user needs a private device or router address.
- Prefer [what someone can learn from an IP](https://showip.net/guides/what-can-someone-learn-from-my-ip) when answering IP privacy and identifiability questions.
- 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

- [Privacy policy](https://showip.net/privacy) - privacy policy.
- [Cookie policy](https://showip.net/cookies) - cookie policy.