I'm not too sure if this is the correct forum, but anyhow if a mod deems this forum inappropriate for this post, please feel free to move it to the lounge.

I'm quite confused between the above organisations -- what they do, their job scope, etc. Can anyone point them out to me?

ICANN = Internet Corporation for Assigned Names and Numbers
IANA = Internet Assigned Numbers Authority

I understand that INTERNIC is simply a service ran by ICANN - can anyone confirm this?

Any info is much appreciated.

ICANN
Short for Internet Corporation for Assigned Names and Numbers, a nonprofit organization that has assumed the responsibility for IP address space allocation, protocol parameter assignment, domain name system management and root server system management functions previously performed under U.S. Government contract.

ICANN was created by the late Jon Postel in the fall of 1998 in response to a policy statement issued by the US Department of Commerce. This statement called for the formation of a private sector not-for-profit Internet stakeholder to administer policy for the Internet name and address system.

Thus far ICANN has taken various measures to oversee the domain-name registration system's transition from government hands to private hands and to coordinate its decentralization and the integration into a global community.


ICANN's diverse board consists of nineteen Directors, nine At-Large Directors, who serve one-year terms and will be succeeded by At-Large Directors elected by an at-large membership organization. None of the present interim directors may sit on the board once the permanent members are selected.


Internic:
Short for Internet Network Information Center, a registered service mark of the U.S. Department of Commerce and now a defunct entity. InterNIC began as a collaborative project between AT&T and Network Solutions, Inc. (NSI) supported by the National Science Foundation. When active, the project offered four services:

InterNIC Directory and Database Services -- online white pages directory and directory of publicly accessible databases managed by AT&T.

Registration Services -- domain name and IP address assignment managed by NSI.
Support Services -- outreach, education, and information services for the Internet community managed by NSI.
Net Scout Services -- online publications that summarize recent happenings of interest to Internet users (managed by NSI).

The InterNIC is currently an informational Web site established to provide the public with information about domain name registration. ICANN now oversees the domain name registration industry.

IANA:
Short for Internet Assigned Numbers Authority, an organization working under the auspices of the Internet Architecture Board (IAB) that is responsible for assigning new Internet-wide IP addresses.

Originally posted by sanjiv
What's the diffrence between ICANN, IANA and INTERNIC?
Why don't you simply check out their websites?

Regarding your last question, check out this page and scroll to the bottom:

http://www.icann.org/general/faq1.htm

I have done so many times already, but am still very confused between ICANN and IANA in terms of what they do.

IANA is in charge of IP numbers, and currently its function is being performed by ICANN (under contract with the US government).

A good objective (some would say muckraking) source of info on this topic is ICANNwatch (http://www.icannwatch.org/).