Who are some of the most important organizations in the internet

IAB (Internet Architecture Board)

IANA (Internet Assigned Numbers Authority)

ICANN (Internet Corporation for Assigned Names and Numbers)

IESG (Internet Engineering Steering Group)

IETF (Internet Engineering Task Force)

IRTF (Internet Research Task Force)

ISOC (Internet Society)

NANOG (North American Network Operators' Group)

NRO (Number Resource Organization)

W3C (World Wide Web Consortium)