Autonomous System Number List

An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators on behalf of a single administrative entity or domain, that presents a common and clearly defined routing policy to the Internet. Each AS is assigned a unique autonomous system number (ASN), for use in Border Gateway Protocol (BGP) routing.

AS numbers are assigned to Local Internet Registries (LIRs) and end user organizations by their respective Regional Internet Registries (RIRs), which in turn receive blocks of ASNs for reassignment from the Internet Assigned Numbers Authority (IANA). The IANA also maintains a registry of ASNs which are reserved for private use (and should therefore not be announced to the global Internet). The allocated AS numbers are defined as 16-bit and 32-bit integers. The length range of 16-bit is between 0 and 65535, and the length range of 32-bit is between 0 and 4294967294. At present, the 16-bit integers which allowed for a maximum of 65,536 assignments is mostly used.

AS Number AS Organization Country Code
AS398277 AS US (United States of America)
AS398279 KITCHELL-CORP US (United States of America)
AS398280 SYSTEMVERSE-ARIN-01 US (United States of America)
AS398282 SUPPLYHQ-INET US (United States of America)
AS398284 LAT-US-01 US (United States of America)
AS398286 LOCKARD-ASN-1 US (United States of America)
AS398287 BITCOM US (United States of America)
AS398289 JKNIPPER-ASN-01 US (United States of America)
AS398290 HOC CA (Canada)
AS398291 AS-PHREESIA-1 US (United States of America)
AS398292 BABISH-TELECOM CA (Canada)
AS398294 COMPLIANT-PROD US (United States of America)
AS398295 IEC-ELECTRONICS-01 US (United States of America)
AS398296 DIGITALSYSTEM US (United States of America)
AS398297 FROG US (United States of America)
AS398298 NETSTRATUM US (United States of America)
AS398299 FRAXION CA (Canada)
AS398300 OCIENT-INC US (United States of America)
AS398301 ARH-ORG US (United States of America)
AS398303 DIAMEDIC-SLC001 US (United States of America)
AS398304 THE-IT-GUY US (United States of America)
AS398305 N4-MOBILE CA (Canada)
AS398306 CR-NETWORK-LLC US (United States of America)
AS398307 ZOOCE-ASN-01 US (United States of America)
AS398309 TMGCORE US (United States of America)
AS398310 UPNETWI US (United States of America)
AS398311 IT-AUDITORS-PR-CORP US (United States of America)
AS398312 GRANDVIEW-HEIGHTS-AS US (United States of America)
AS398313 SFU US (United States of America)
AS398314 ELDORADO-205 US (United States of America)
AS398316 SCTDC US (United States of America)
AS398317 FL-PR-ASN1 PR (Puerto Rico)
AS398319 ANMISA-LLC US (United States of America)
AS398320 TALBOT-EMERGENCY-SERVICES-01 US (United States of America)
AS398322 ESFCU-01 US (United States of America)
AS398323 PSBOS-1 US (United States of America)
AS398324 CENSYS-ARIN-01 US (United States of America)
AS398326 IMINTERNET PR (Puerto Rico)
AS398328 LOCALHOST-LLC US (United States of America)
AS398330 ABERYTHMIC US (United States of America)
AS398331 1FBUSA-PROD US (United States of America)
AS398332 PPFULLWAN1 US (United States of America)
AS398334 VOCINITY US (United States of America)
AS398335 HELIO US (United States of America)
AS398336 MODERN-WOODMEN-OF-AMERICA US (United States of America)
AS398337 COMMUNITY-INTERNET-PROVIDERS US (United States of America)
AS398343 BAXET-GROUP US (United States of America)
AS398344 HGTECH US (United States of America)
AS398345 NEW-AGE-NETWORKS US (United States of America)
AS398346 PROJETCIRRUS CA (Canada)

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