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AS26100
AS26100 National Oceanic and Atmospheric Administration
NOAA-PACIFIC-REGION-CENTER - National Oceanic and Atmospheric Administration · registered in the United States
IPv4 addresses 2,304 3 prefixes · <0.001% of announced IPv4
Rank in United States #5,913 largest network in US by IPv4 space, of 18,338 · <0.01% of US
Rank worldwide #20,915 of 79,396 networks with IPv4
IPv6 none no IPv6 routes announced
IPv4 prefixes
All 3 prefixes, in address order.
137.75.124.0/22 205.156.56.0/22 205.156.60.0/24
Other ASNs named National Oceanic and Atmospheric Administration
5 other networks use the same organisation name; together with AS26100 they announce 503,296 IPv4 addresses.
ASN Name IPv4 addresses
AS3477 NOAA-NWAVE - National Oceanic and Atmospheric Administration US 321,280 AS2648 NOAA-BOULDER - National Oceanic and Atmospheric Administration US 112,384 AS7764 CENSUSBUREAU - National Oceanic and Atmospheric Administration US 65,536 AS10616 NTIS - National Oceanic and Atmospheric Administration US 1,536 AS6629 NOAA-SILVERSPRING - National Oceanic and Atmospheric Administration US 256
Similar-sized networks in United States
ASN Name IPv4 addresses
AS25896 #5910 IPC-NETWORK-SERVICES-INC - IPC Network Services Inc.2,304 AS25917 #5911 RA-NA-CNF - ROCKWELL AUTOMATION Inc.2,304 AS25958 #5912 MC-INT - Marshfield Clinic Inc.2,304 AS26351 #5914 MARYVILLE-DATA-CENTER - First Horizon National Corporation2,304 AS26663 #5915 BANTELUSACORP-01 - BANTEL-USA CORP2,304 AS26718 #5916 WOLVERINE-TRADING-TECHNOLOGIES-LLC - WOLVERINE TRADING TECHNOLOGIES, LLC2,304
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