Home
/
ASN directory
/
AS409
AS409 Air Force Systems Networking
AFCONC-BLOCK1-AS - Air Force Systems Networking · registered in the United States
IPv4 addresses 269,312 42 prefixes · 0.009% of announced IPv4
Rank in United States #256 largest network in US by IPv4 space, of 18,338 · 0.02% of US
Rank worldwide #885 of 79,396 networks with IPv4
IPv6 none no IPv6 routes announced
IPv4 prefixes
All 42 prefixes, in address order.
128.216.0.0/20 131.36.0.0/18 131.36.64.0/19 131.36.96.0/20 131.36.112.0/22 131.36.116.0/24 131.36.117.0/24 131.36.118.0/23 131.36.120.0/21 131.36.128.0/17 131.47.0.0/18 131.47.64.0/19 131.47.96.0/22 131.47.100.0/24 131.47.101.0/24 131.47.102.0/23 131.47.104.0/23 131.47.106.0/24 131.47.107.0/24 131.47.108.0/22 131.47.112.0/20 131.47.128.0/17 132.3.8.0/22 132.15.0.0/17 132.15.128.0/18 132.15.192.0/19 132.15.224.0/23 132.15.226.0/23 132.15.228.0/22 132.15.232.0/21 132.15.240.0/20 132.20.0.0/17 132.20.128.0/18 132.20.192.0/19 132.20.224.0/20 132.20.240.0/21 132.20.248.0/22 132.20.252.0/22 143.140.64.0/22 143.140.68.0/23 143.140.70.0/24 143.140.71.0/24
Other ASNs named Air Force Systems Networking
17 other networks use the same organisation name; together with AS409 they announce 883,200 IPv4 addresses.
ASN Name IPv4 addresses
AS391 AFCONC-BLOCK1-AS - Air Force Systems Networking US 283,648 AS399 AFCONC-BLOCK1-AS - Air Force Systems Networking US 153,600 AS427 AFCONC-BLOCK1-AS - Air Force Systems Networking US 133,120 AS745 AFCONC-BLOCK2-AS - Air Force Systems Networking US 33,280 AS485 AFCONC-BLOCK1-AS - Air Force Systems Networking US 2,304 AS400 AFCONC-BLOCK1-AS - Air Force Systems Networking US 2,048 AS500 AFCONC-BLOCK1-AS - Air Force Systems Networking US 1,536 AS501 AFCONC-BLOCK1-AS - Air Force Systems Networking US 1,024 AS65 AF-RASN-65 - Air Force Systems Networking US 512 AS406 AFCONC-BLOCK1-AS - Air Force Systems Networking US 512 AS467 AFCONC-BLOCK1-AS - Air Force Systems Networking US 512 AS468 AFCONC-BLOCK1-AS - Air Force Systems Networking US 512 AS384 AFCONC-BLOCK1-AS - Air Force Systems Networking US 256 AS405 AFCONC-BLOCK1-AS - Air Force Systems Networking US 256 AS408 AFCONC-BLOCK1-AS - Air Force Systems Networking US 256 AS461 AFCONC-BLOCK1-AS - Air Force Systems Networking US 256 AS463 AFCONC-BLOCK1-AS - Air Force Systems Networking US 256
Similar-sized networks in United States
ASN Name IPv4 addresses
AS2386 #253 INS-AS - AT&T Enterprises, LLC272,128 AS122 #254 UPMC-AS122 - UPMC270,848 AS5180 #255 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD)270,848 AS18779 #257 EGIHOSTING - EGIHosting268,800 AS2576 #258 DOT-AS - U. S. Department of Transportation268,800 AS1554 #259 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)266,496
IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources