Home
/
ASN directory
/
AS321
AS321 United States Department of Defense (DoD)
DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) · registered in the United States
IPv4 addresses 66,560 26 prefixes · 0.002% of announced IPv4
Rank in United States #870 largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide #2,650 of 79,396 networks with IPv4
IPv6 256 x /48 1 prefixes
IPv4 prefixes
All 26 prefixes, in address order.
55.24.0.0/20 55.24.16.0/22 55.24.20.0/24 55.24.21.0/24 55.24.22.0/23 55.24.24.0/21 55.24.32.0/19 55.24.64.0/20 55.24.80.0/21 55.24.88.0/21 55.24.96.0/19 55.24.128.0/18 55.24.192.0/19 55.24.224.0/21 55.24.232.0/23 55.24.234.0/24 55.24.235.0/24 55.24.236.0/24 55.24.237.0/24 55.24.238.0/23 55.24.240.0/21 55.24.248.0/22 55.24.252.0/22 139.241.3.0/24 139.241.58.0/23 139.241.86.0/24
IPv6 prefixes
All 1 prefix.
Other ASNs named United States Department of Defense (DoD)
172 other networks use the same organisation name; together with AS321 they announce 282,590,464 IPv4 addresses. Largest 30 shown.
ASN Name IPv4 addresses
AS749 DNIC-AS-00749 - United States Department of Defense (DoD) US 222,038,272 AS721 DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) US 29,541,376 AS56 DNIC-AS-00056 - United States Department of Defense (DoD) US 7,785,728 AS306 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 4,492,288 AS668 DNIC-AS-00668 - United States Department of Defense (DoD) US 2,549,504 AS5972 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US 1,865,472 AS27064 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US 1,594,112 AS637 DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US 929,280 AS367 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 811,776 AS5852 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US 526,592 AS357 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 393,216 AS361 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 393,216 AS647 DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US 348,928 AS27046 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US 311,552 AS5180 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US 270,848 AS1554 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US 266,496 AS5277 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US 265,472 AS370 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 264,192 AS6039 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US 224,000 AS1600 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US 197,120 AS331 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 196,608 AS335 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 196,608 AS340 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 196,352 AS5371 DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US 196,352 AS6035 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US 167,936 AS27142 DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US 155,904 AS6041 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US 147,200 AS665 DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US 142,848 AS345 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US 132,608 AS1556 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US 132,096
Similar-sized networks in United States
ASN Name IPv4 addresses
AS396362 #867 LEASEWEB-USA-NYC - Leaseweb USA, Inc.66,560 AS11042 #868 NTHL - NETWORK TRANSIT HOLDINGS LLC66,560 AS1448 #869 UNITED-BROADBAND - United Cooperative Services66,560 AS11827 #871 WSU-PUL-AS - Washington State University66,560 AS4130 #872 UPITT-AS - University of Pittsburgh66,560 AS43 #873 BNL-AS - Brookhaven National Laboratory66,560
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