World Wide Web Info
AFRINIC Africa
APNIC Whois Lookup IP address owners in the Asia Pacific region
ARIN whois Lookup IP address owners for North and South America, the Caribbean, and sub-Saharan Africa
CIDR subnet calculator
Domain Tools
Down detector
IPV4 address assignment table
LACNIC Latin American and Caribbean
RIPE Whois Lookup IP address owners in Europe, the Middle East, Central Asia and Africa
Internet providers
What's my IP address?
Dyndns.org
IP Address World
IP Chicken
WhatIsMyIP.com
Whatsmyip.org