# whatismyip.fi

Fast, secure, and privacy-first Finnish IP utility and network diagnostic tool.

## API Endpoints

- `GET /ip` -> Returns the raw client IP address (IPv4/IPv6) as plain text.
- `GET /ipv4` -> Returns the client's IPv4 address as plain text (404 if client has no IPv4).
- `GET /ipv6` -> Returns the client's IPv6 address as plain text (404 if client has no IPv6).
- `GET /json` -> Returns detailed client connection payload in JSON format.
  - Fields: ip, version, cgnat, ptr, host, user_agent, country, whois_netname.
- `GET /headers` -> Returns incoming HTTP request headers in JSON format.
- `GET /diagnostics` -> Returns detailed network diagnostic check in JSON format.
- `GET /port-check?port=<port>` -> Scans if a specific port is reachable on client IP.
- `GET /reverse-dns?ip=<ip>` -> Looks up PTR record for a given IP.
- `GET /dns?domain=<domain>` -> Queries DNS records (A/AAAA) for a domain.
- `GET /speedtest/download` -> Download test endpoint (returns 8MB dummy data).