National Oceanic and Atmospheric Administration

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks160 · 585,728 IPv4 addresses
IPv6 35 prefixes (largest 2601:a000::/32)
Cluster ID213580058
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 15 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
168 +9 netblocks since 2026-07-05
2026-07-05 peak 168 2026-07-26

IP Ranges (160)

showing 50 of 160 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
132.163.0.0/18 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.67.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.68.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.72.0/21 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.80.0/20 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.98.0/23 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.100.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.104.0/21 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.112.0/20 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
132.163.128.0/17 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.0.0/18 National Oceanic and Atmospheric Administration ARIN DIRECT ALLOCATION ● high
137.75.64.0/18 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.68.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.72.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.76.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.80.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.82.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.88.0/21 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.96.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.100.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.106.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.108.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.112.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.116.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.120.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.124.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.128.0/18 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.192.0/19 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.224.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.228.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.232.0/21 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
137.75.240.0/20 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.90.0.0/16 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.90.28.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.90.101.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.90.190.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.172.0.0/16 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.208.160.0/20 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.208.192.0/20 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.208.252.0/22 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
140.208.253.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.0.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.0.0/18 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.0.0/16 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.4.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.64.0/19 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.128.0/19 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.128.0/17 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.160.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high
148.129.161.0/24 National Oceanic and Atmospheric Administration BGP ANNOUNCED ● high

IPv6 ranges (35)

showing the 15 largest allocations
CIDR
2601:a000::/32
2601:a002::/32
2601:a004::/32
2601:a005::/32
2601:a008::/32
2601:a010::/32
2601:a012::/32
2601:a013::/32
2610:20:2000::/38
2610:20:8000::/38
2610:20:8800::/38
2610:20:1000::/40
2610:20:6b00::/40
2610:20:9200::/40
2610:20:9300::/40

Domains hosted in this network

what's this?
noaa.gov census.gov spaceweather.gov

Network trust

what's this?
RPKI hygiene: A how networks compare →
98.8% of checked blocks have valid RPKI ROA coverage (166 of 168)
Possible discrepancies (1)

These blocks are registered to National Oceanic and Atmospheric Administration but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

204.193.231.0/24 /24 authorized for AS3423 — AT&T Enterprises, LLC

NIC Handles

AS10616 AS26100 AS2648 AS3477 AS6629 AS7764 NAA38-ARIN NAA40-ARIN NAT41-ARIN NOAA-7-Z NOAABO-Z RODGE188-ARIN +3 more