AS numbers question

Allwyn Crichlow allwync at internic.net
Sun Jul 7 10:50:30 UTC 1996


Hello,


Yes, the Internet Assigned Numbers Authority (IANA) has reserved the fol-
lowing block of AS numbers for private use (not to be advertised on
the global Internet):  64512 through 65535


The AS number space is a finite amount of address space. It is currently
defined as a 16 bit integer and hence limited to 65535 unique AS numbers.
Over 6900 ASes have been allocated however very few are being
actively routed in the global Internet.



Respectfully,

Allwyn F Crichlow
InterNIC Regsitration Services



% 
% Are there "reserved" AS numbers, the same way there are reserved IP
% addresses for non-connected networks?
% 
% Are As numbers considered scarce ? (I think of many small Internet
% providers asking for AS numbers just to peer BGP with more than one ISP).
% 
% TIA
%  -- 
% -----------------------------------------------------------------------------
% |  Alexandre Leib Grojsgold                       |  tel: + 55 21 542-2746  |
% |  LABORATORIO NACIONAL DE COMPUTACAO CIENTIFICA  |  fax: + 55 21 295-8499  |
% |  22.290 Rio de Janeiro - RJ - Brasil            |                         |
% -----------------------------------------------------------------------------
% 






More information about the NANOG mailing list