American Registry for Internet Numbers
Nonprofit corporation allocating internet number resources, developing policies and providing information and educational outreach for the advancement of the internet. Includes registration services, meeting information and news.
http://www.arin.net/

Asia Pacific Network Information Centre (APNIC)
An open, membership-based, not-for-profit organization providing training and education services, supporting technical activities such as root server deployments, and collaborating with other regional and international organizations.
http://www.apnic.net/

Network Startup Resource Center (NSRC)
A non-profit activity that has worked since the late 1980s to help develop and deploy networking technology in various projects throughout Asia/Pacific, Africa, Latin America and the Caribbean, the Middle East, and the New Independent States.
http://www.nsrc.org/