Additionally, you need to subtract out the ones that have gone out of
business. I was looking thru the ASN list and right off the top found
about 5 that I recognized as defunct within the first 5000.
(ok, ok, 5 / 5000... maybe you don't need to subtract them out after all)
AlanC {stunned that we just got an ASN in the 2xxxxx range}
There are 11,358 AS's currently announced in the BGP table in my neck of
the woods