Free Tools
Instant Network Intelligence
What Is My IP
See your public IP address and where the internet thinks you are.
- Public IPv4 or IPv6 address
- City, region and country
- ISP & ASN
- Timezone & map links
IP Geolocation
Look up the country and network behind any IP address.
- Country detection
- ASN & network owner
- IPv4 and IPv6 support
- JSON output
DNS Lookup
Query DNS records for any domain and resolve IPs back to hostnames.
- A, AAAA, MX, TXT, CNAME, NS records
- Reverse DNS (PTR) lookup
- Fast JSON results
Email Deliverability
Check the DNS records that decide whether your mail reaches the inbox.
- MX record check
- SPF record validation
- DKIM key lookup
- DMARC policy checker
- Deliverability score
IP Blacklist Check
See whether an IP address is listed on DNS-based spam blacklists (DNSBLs).
- Major DNSBLs checked
- Per-list results
- Instant results
WHOIS Lookup
Registration data for domains and IP networks, fetched over RDAP.
- Registrar & registration dates
- Nameservers
- IP network ownership
For Developers
API & AI Integrations
Free REST API
Programmatic access to every tool. No sign-up and no API key.
- RESTful JSON endpoints
- No authentication
- Per-IP rate limiting
- OpenAPI description
MCP Server
Use WhatIP from AI assistants that speak the Model Context Protocol.
- Single endpoint: whatip.ca/mcp
- IP, DNS, WHOIS & email tools
- No API key needed