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Autonomous System

AS2648

National Oceanic and Atmospheric Administration

Announced IPs
116,736
CIDR prefixes
18
ASN
AS2648

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

61/100
Moderate
How this score is built

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS2648 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
204.228.182.0/24 AS2648, AS3477 2026-07-22 23:23:24

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
132.163.128.0/17 32.8K
0.2%
National Oceanic and Atmospheric Administration US Colorado Louisville
132.163.0.0/18 16.4K
0.5%
National Oceanic and Atmospheric Administration US
137.75.0.0/18 16.4K
1.5%
National Oceanic and Atmospheric Administration US
137.75.128.0/18 16.4K
2.9%
National Oceanic and Atmospheric Administration US
137.75.192.0/19 8.2K
2.4%
National Oceanic and Atmospheric Administration US Colorado Boulder
132.163.80.0/20 4.1K
0.2%
National Oceanic and Atmospheric Administration US
132.163.112.0/20 4.1K
0.0%
National Oceanic and Atmospheric Administration US
137.75.240.0/20 4.1K
1.8%
National Oceanic and Atmospheric Administration US
140.208.160.0/20 4.1K
0.0%
National Oceanic and Atmospheric Administration US
132.163.72.0/21 2.0K
0.0%
National Oceanic and Atmospheric Administration US
132.163.104.0/21 2.0K
0.0%
National Oceanic and Atmospheric Administration US
137.75.232.0/21 2.0K
1.7%
National Oceanic and Atmospheric Administration US
132.163.68.0/22 1.0K
0.0%
National Oceanic and Atmospheric Administration US
132.163.100.0/22 1.0K
0.0%
National Oceanic and Atmospheric Administration US
137.75.228.0/22 1.0K
0.0%
National Oceanic and Atmospheric Administration US
132.163.98.0/23 512
0.0%
National Oceanic and Atmospheric Administration US
132.163.67.0/24 256
0.0%
National Oceanic and Atmospheric Administration US Colorado Lafayette
204.238.94.0/24 256
60.5%
National Oceanic and Atmospheric Administration US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS2648 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
137.75.0.0/18 28,612 2026-07-23 10:06:00
137.75.240.0/20 28,585 2026-07-23 10:06:00
137.75.128.0/18 28,564 2026-07-23 10:06:00
137.75.192.0/19 28,562 2026-07-23 10:06:00
137.75.232.0/21 28,512 2026-07-23 10:06:00
137.75.228.0/22 28,491 2026-07-23 10:06:00
140.208.160.0/20 28,131 2026-07-13 06:46:18
132.163.100.0/22 23,549 2026-07-23 10:06:00
132.163.80.0/20 23,544 2026-07-23 10:06:00
132.163.72.0/21 23,540 2026-07-23 10:06:00
132.163.104.0/21 23,525 2026-07-23 10:06:00
132.163.0.0/18 23,513 2026-07-23 10:06:00
132.163.112.0/20 23,492 2026-07-23 10:06:00
132.163.128.0/17 23,491 2026-07-23 10:06:00
132.163.68.0/22 23,482 2026-07-23 10:06:00
132.163.67.0/24 23,451 2026-07-23 10:06:00
132.163.98.0/23 23,367 2026-07-23 10:06:00
204.228.182.0/24 2,856 2026-07-22 06:20:00
204.238.94.0/24 2,301 2026-06-30 23:11:40
204.228.188.0/24 1,974 2026-07-16 07:45:41
204.228.178.0/24 1,904 2026-06-14 06:38:41
204.228.190.0/24 856 2026-06-01 18:59:41
204.228.186.0/24 664 2026-07-12 21:03:26
199.104.104.0/24 306 2026-05-29 03:28:40
204.228.175.0/24 228 2026-06-11 04:25:37
204.228.187.0/24 228 2026-06-11 04:25:37
204.228.185.0/24 228 2026-06-11 04:25:37
192.133.29.0/24 13 2026-05-29 03:27:36
198.200.151.0/24 8 2026-07-19 09:37:35

Frequently Asked Questions

What is AS2648?

AS2648 is an Autonomous System Number assigned to National Oceanic and Atmospheric Administration. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS2648 announce?

AS2648 announces 116.7K IPv4 addresses distributed across 18 routed CIDR prefixes. The network is registered in United States.

Who operates AS2648?

AS2648 is operated by National Oceanic and Atmospheric Administration. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS2648 registered in?

AS2648 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-23 11:40:32 UTC
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