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AS297 National Aeronautics and Space Administration

AS297 - National Aeronautics and Space Administration · registered in the United States

IPv4 addresses649,47258 prefixes · 0.021% of announced IPv4
Rank in United States#144largest network in US by IPv4 space, of 18,338 · 0.05% of US
Rank worldwide#483of 79,396 networks with IPv4
IPv665,531 x /4850 prefixes
CountryUnited States18,679 ASNs registered there
Open AS297 in ASN lookup Look up an IP in this network (129.163.0.1) All networks in United States

IPv4 prefixes

All 58 prefixes, in address order.

  • 129.163.0.0/16
  • 161.40.0.0/16
  • 184.105.114.0/24
  • 184.105.185.0/24
  • 184.105.206.0/24
  • 184.105.216.0/24
  • 192.31.241.0/24
  • 192.67.118.0/24
  • 192.92.184.0/23
  • 192.92.194.0/23
  • 192.112.20.0/24
  • 192.112.220.0/22
  • 192.149.89.0/24
  • 198.116.0.0/23
  • 198.116.2.0/23
  • 198.116.4.0/22
  • 198.116.8.0/21
  • 198.116.16.0/21
  • 198.116.24.0/24
  • 198.116.25.0/24
  • 198.116.26.0/23
  • 198.116.28.0/22
  • 198.116.32.0/19
  • 198.116.64.0/18
  • 198.116.128.0/18
  • 198.116.192.0/21
  • 198.116.200.0/22
  • 198.116.204.0/22
  • 198.116.208.0/23
  • 198.116.210.0/23
  • 198.116.212.0/22
  • 198.116.216.0/21
  • 198.116.224.0/20
  • 198.117.0.0/16
  • 198.118.0.0/17
  • 198.118.128.0/18
  • 198.118.202.0/23
  • 198.118.204.0/22
  • 198.118.208.0/20
  • 198.118.225.0/24
  • 198.118.226.0/23
  • 198.118.228.0/24
  • 198.118.230.0/23
  • 198.118.232.0/24
  • 198.118.238.0/23
  • 198.118.244.0/22
  • 198.118.248.0/22
  • 198.118.252.0/23
  • 198.119.0.0/23
  • 198.119.3.0/24
  • 198.119.4.0/22
  • 198.119.8.0/21
  • 198.119.16.0/20
  • 198.119.32.0/19
  • 198.119.64.0/18
  • 198.119.128.0/17
  • 198.120.0.0/14
  • 198.182.19.0/24

IPv6 prefixes

All 50 prefixes.

  • 2001:4d0::/40
  • 2001:4d0:100::/45
  • 2001:4d0:109::/48
  • 2001:4d0:10a::/47
  • 2001:4d0:10c::/46
  • 2001:4d0:110::/44
  • 2001:4d0:120::/43
  • 2001:4d0:140::/42
  • 2001:4d0:180::/41
  • 2001:4d0:200::/39
  • 2001:4d0:400::/38
  • 2001:4d0:800::/37
  • 2001:4d0:1000::/36
  • 2001:4d0:2000::/38
  • 2001:4d0:2400::/44
  • 2001:4d0:2410::/45
  • 2001:4d0:2419::/48
  • 2001:4d0:241b::/48
  • 2001:4d0:241c::/46
  • 2001:4d0:2420::/43
  • 2001:4d0:2440::/42
  • 2001:4d0:2480::/41
  • 2001:4d0:2500::/40
  • 2001:4d0:2600::/39
  • 2001:4d0:2800::/37
  • 2001:4d0:3000::/36
  • 2001:4d0:4000::/35
  • 2001:4d0:6000::/40
  • 2001:4d0:6100::/44
  • 2001:4d0:6110::/45
  • 2001:4d0:6119::/48
  • 2001:4d0:611a::/47
  • 2001:4d0:611c::/46
  • 2001:4d0:6120::/43
  • 2001:4d0:6140::/42
  • 2001:4d0:6180::/41
  • 2001:4d0:6200::/40
  • 2001:4d0:6300::/44
  • 2001:4d0:6310::/45
  • 2001:4d0:6318:f000::/52
  • 2001:4d0:6319::/48
  • 2001:4d0:631a::/47
  • 2001:4d0:631c::/46
  • 2001:4d0:6320::/43
  • 2001:4d0:6340::/42
  • 2001:4d0:6380::/41
  • 2001:4d0:6400::/38
  • 2001:4d0:6800::/37
  • 2001:4d0:7000::/36
  • 2001:4d0:8000::/33

Other ASNs named National Aeronautics and Space Administration

8 other networks use the same organisation name; together with AS297 they announce 2,839,554 IPv4 addresses.

ASNNameIPv4 addresses
AS270AS270 - National Aeronautics and Space Administration US1,859,328
AS1701AS1701 - National Aeronautics and Space Administration US131,072
AS10343AS10343 - National Aeronautics and Space Administration US123,904
AS24AS24 - National Aeronautics and Space Administration US65,538
AS1848AS1848 - National Aeronautics and Space Administration US6,144
AS372AS372 - National Aeronautics and Space Administration US1,792
AS2143AS2143 - National Aeronautics and Space Administration US1,792
AS21556NARC-EROOT - National Aeronautics and Space Administration US512

Similar-sized networks in United States

ASNNameIPv4 addresses
AS31822#141 CITY-UNIVERSITY-OF-NEW-YORK - City University of New York659,712
AS4193#142 WA-STATE-GOV - State of Washington655,872
AS3128#143 BRUWS-AS3128 - University of Wisconsin System655,616
AS33489#145 COMCAST-33489 - Comcast Cable Communications, LLC647,936
AS10753#146 LUMEN-LEGACY-L3-CUSTOMER-SHARED-USE - Level 3 Parent, LLC640,512
AS33661#147 CMCS - Comcast Cable Communications, LLC630,528

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