# IPFYI.com

> The world's network, mapped. IP address geolocation, ISP, ASN, and infrastructure data for 250 countries. REST API, machine-readable markdown endpoints, and 15-language support.

## IP Lookup

- [Your IP](https://ipfyi.com/)
- [IP Detail](https://ipfyi.com/ip/8.8.8.8/)

## Network Explorer

- [Countries](https://ipfyi.com/countries/) — 250 territories
- [ASN Lookup](https://ipfyi.com/asns/) — 500+ autonomous systems
- [Cities](https://ipfyi.com/cities/)
- [ISPs](https://ipfyi.com/isps/)
- [IP Ranges](https://ipfyi.com/ip-ranges/)

## Reference

- [Port Numbers](https://ipfyi.com/ports/) — 1,025 ports
- [Protocols](https://ipfyi.com/protocols/) — 50 protocols
- [Glossary](https://ipfyi.com/glossary/) — 149 networking terms
- [Guides](https://ipfyi.com/guides/) — 149 articles across 10 series
- [Comparisons](https://ipfyi.com/comparisons/) — 30 side-by-side analyses

## Tools

- [DNS Leak Test](https://ipfyi.com/tools/dns-leak-test/)
- [Subnet Calculator](https://ipfyi.com/tools/subnet-calculator/)
- [WHOIS Lookup](https://ipfyi.com/tools/whois/)

## For Developers

- [REST API](https://ipfyi.com/api/docs/) — 11 public endpoints, no auth
- [OpenAPI Schema](https://ipfyi.com/api/schema/)
- [Developer Hub](https://ipfyi.com/developers/)

## Machine-Readable Content

- Append .md to content URLs for markdown (e.g., /protocol/http.md)
- [Full Content Index](/llms-full.txt)
- [RSS Feed](/feed/rss/) — Guides
- [Atom Feed](/feed/atom/) — Guides
- [Sitemap](/sitemap.xml)