Internet Engineering Task Force (IETF)—http://www.ietf.org
North American Network Operations Group (NANOG)—http://www.nanog.org
American Registry for Internet Numbers (ARIN)—http://www.arin.net
Asian Pacific Network Information Center (APNIC)—http://www.apnic.net
RIPE Network Coordination Centre (NCC)—http://www.ripe.net
The Internet Corporation for Assigned Names and Numbers (ICANN)—http://www.icann.org
Internet Assigned Numbers Authority (IANA)—http://www.iana.org
Cooperative Association for Internet Data Analysis (CAIDA)—http://www.caida.org
18.219.22.169