IAP

from The Free On-line Dictionary of Computing (8 July 2008)
Internet Access Provider
IAP
provider

   <networking, company> (IAP) A company or other origanisation
   which provides access to the {Internet} to businesses and/or
   consumers.  An IAP purchases an Internet link from another
   company that has a direct link to the Internet and resells
   portions of that {bandwidth} to the general public.

   For example, an IAP may purchase a {T1} link (1.544Mb/s) and
   resell that bandwidth in chunks consisting of {ISDN} (64Kb/s,
   128Kb/s) and analog {modems} (14.4Kb/s, 28.8Kb/s).  The IAP's
   customer base is likely to include both businesses and
   individuals.  Individual customers usually connect to the IAP
   via a modem and telephone line to a (preferably local) {point
   of presence}.

   An IAP may also be an {Internet Service Provider}.

   (1996-06-25)