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AS343 United States Department of Defense (DoD)

DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) · registered in the United States

IPv4 addresses131,0722 prefixes · 0.004% of announced IPv4
Rank in United States#516largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide#1,563of 79,396 networks with IPv4
IPv6256 x /481 prefixes
CountryUnited States18,679 ASNs registered there
Open AS343 in ASN lookup Look up an IP in this network (55.55.0.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

  • 55.55.0.0/16
  • 55.94.0.0/16

IPv6 prefixes

All 1 prefix.

  • 2608:14b:6300::/40

Other ASNs named United States Department of Defense (DoD)

172 other networks use the same organisation name; together with AS343 they announce 282,590,464 IPv4 addresses. Largest 30 shown.

ASNNameIPv4 addresses
AS749DNIC-AS-00749 - United States Department of Defense (DoD) US222,038,272
AS721DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) US29,541,376
AS56DNIC-AS-00056 - United States Department of Defense (DoD) US7,785,728
AS306DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US4,492,288
AS668DNIC-AS-00668 - United States Department of Defense (DoD) US2,549,504
AS5972DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US1,865,472
AS27064DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US1,594,112
AS637DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US929,280
AS367DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US811,776
AS5852DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US526,592
AS357DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US393,216
AS361DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US393,216
AS647DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US348,928
AS27046DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US311,552
AS5180DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US270,848
AS1554DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US266,496
AS5277DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US265,472
AS370DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US264,192
AS6039DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US224,000
AS1600DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US197,120
AS331DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US196,608
AS335DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US196,608
AS340DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US196,352
AS5371DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) US196,352
AS6035DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US167,936
AS27142DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) US155,904
AS6041DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) US147,200
AS665DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) US142,848
AS345DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) US132,608
AS1556DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) US132,096

Similar-sized networks in United States

ASNNameIPv4 addresses
AS325#513 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072
AS336#514 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072
AS341#515 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072
AS350#517 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072
AS362#518 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072
AS365#519 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)131,072

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