AS3477 is the autonomous system of National Oceanic and Atmospheric Administration. It holds 322,048 IPv4 addresses in 51 prefixes plus 13 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #750 worldwide and #206 of 18,202 networks in United States. That is 0.02% of the country’s IPv4 space.
The largest block is 161.55.0.0 to 161.55.255.255 with 65,536 addresses, geolocated to Boulder.
- IPv4 addresses
- 322,048
- IPv4 prefixes
- 51
- World rank
- #750
- Country share
- 0.02%
- IPv6 ranges
- 13
Addresses by country
- United States 100%
Largest blocks
- 161.55.0.0 Boulder65,536
- 155.206.0.0 Boulder65,536
- 140.172.0.0 Boulder65,536
- 140.90.0.0 Boulder65,536
- 137.75.64.0 Boulder14,848
- 205.156.0.0 Boulder14,336
- 198.206.32.0 Bohemia8,192
- 204.228.175.0 Ferron4,352
Networks of similar size
- AS15924 Vodafone Net Iletisim Hizmetler AS
323,840 - AS28812 PJSC "Bashinformsvyaz"
323,328 - AS20485 Joint Stock Company TransTeleCom322,304
- AS29992 Department of Veterans Affairs322,304
- AS6922 Texas Department of Information Resources321,024
- AS18182 Sony Network Taiwan Limited
320,256 - AS140318 China Telecom
319,553 - AS15600 Quickline AG
319,488
IPv4 prefixes
- 137.75.64.0/19
- 137.75.96.0/20
- 137.75.112.0/21
- 137.75.120.0/23
- 137.75.123.0/24
- 137.75.224.0/22
- 140.90.0.0/16
- 140.172.0.0/16
- 140.208.192.0/20
- 140.208.252.0/22
- 151.207.8.0/23
- 151.207.12.0/23
- 155.206.0.0/16
- 161.55.0.0/16
- 165.92.182.0/24
- 165.92.184.0/24
- 165.92.186.0/23
- 165.92.188.0/24
- 165.92.222.0/24
- 170.110.254.0/24
- 192.35.128.0/23
- 192.58.1.0/24
- 192.58.2.0/23
- 192.67.97.0/24
- 192.67.134.0/24
- 192.94.173.0/24
- 192.111.123.0/24
- 192.133.29.0/24
- 192.153.129.0/24
- 198.51.11.0/24
- 198.180.147.0/24
- 198.200.151.0/24
- 198.206.32.0/19
- 199.104.104.0/23
- 199.242.231.0/24
- 199.242.232.0/23
- 204.145.202.0/24
- 204.193.241.0/24
- 204.193.242.0/23
- 204.193.244.0/22
- 204.228.175.0/24
- 204.228.176.0/20
- 205.156.0.0/19
- 205.156.32.0/20
- 205.156.48.0/21
- 205.156.61.0/24
- 205.156.62.0/23
- 205.159.118.0/24
- 205.166.33.0/24
- 205.167.24.0/23
- 206.197.238.0/24
Questions and answers
Who owns AS3477?
Autonomous system AS3477 is operated by National Oceanic and Atmospheric Administration.
How many IP addresses does AS3477 have?
The network holds 322,048 IPv4 addresses in 51 prefixes, plus 13 IPv6 ranges.
Which country is AS3477 in?
The main country is United States.
How big is AS3477?
By IPv4 addresses it ranks #750 worldwide.
What is the largest address block of AS3477?
161.55.0.0 to 161.55.255.255, 65,536 addresses.