Skip to main content
Autonomous System

AS26810

U.S. Dept. of Health and Human Services

Announced IPs
300,800
CIDR prefixes
49
ASN
AS26810

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.

69/100
Moderate
How this score is built

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

Network profile

Source: PeeringDB →
Geographic scope Not Disclosed
Traffic ratio Not Disclosed
Peering policy Open

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
158.72.0.0/16 65.5K
0.4%
U.S. Dept. of Health and Human Services US Maryland Kensington
158.71.0.0/17 32.8K
0.1%
U.S. Dept. of Health and Human Services US Maryland Silver Spring
158.74.128.0/17 32.8K
0.6%
U.S. Dept. of Health and Human Services US
162.99.0.0/17 32.8K
0.4%
U.S. Dept. of Health and Human Services US Maryland Beltsville
158.70.192.0/18 16.4K
0.4%
U.S. Dept. of Health and Human Services US
158.71.128.0/18 16.4K
0.0%
U.S. Dept. of Health and Human Services US Virginia Manassas
158.74.64.0/18 16.4K
0.3%
U.S. Dept. of Health and Human Services US
162.99.128.0/18 16.4K
0.1%
U.S. Dept. of Health and Human Services US
158.70.64.0/19 8.2K
0.2%
U.S. Dept. of Health and Human Services US
158.71.160.0/19 8.2K
0.0%
U.S. Dept. of Health and Human Services US
158.71.192.0/19 8.2K
3.4%
U.S. Dept. of Health and Human Services US
158.74.0.0/19 8.2K
0.9%
U.S. Dept. of Health and Human Services US
162.99.192.0/19 8.2K
0.0%
U.S. Dept. of Health and Human Services US
158.70.48.0/20 4.1K
0.0%
U.S. Dept. of Health and Human Services US
158.70.96.0/20 4.1K
0.0%
U.S. Dept. of Health and Human Services US
158.70.176.0/20 4.1K
1.3%
U.S. Dept. of Health and Human Services US
158.71.144.0/20 4.1K
0.0%
U.S. Dept. of Health and Human Services US
158.74.48.0/20 4.1K
9.6%
U.S. Dept. of Health and Human Services US
158.70.0.0/21 2.0K
0.1%
U.S. Dept. of Health and Human Services US
158.70.120.0/21 2.0K
0.0%
U.S. Dept. of Health and Human Services US
158.70.152.0/21 2.0K
0.0%
U.S. Dept. of Health and Human Services US
158.70.160.0/21 2.0K
0.2%
U.S. Dept. of Health and Human Services US
158.71.128.0/21 2.0K
0.0%
U.S. Dept. of Health and Human Services US
158.74.40.0/21 2.0K
0.2%
U.S. Dept. of Health and Human Services US
158.70.44.0/22 1.0K
0.2%
U.S. Dept. of Health and Human Services US
158.70.116.0/22 1.0K
0.4%
U.S. Dept. of Health and Human Services US
158.70.140.0/22 1.0K
0.2%
U.S. Dept. of Health and Human Services US
158.70.148.0/22 1.0K
0.2%
U.S. Dept. of Health and Human Services US
158.70.168.0/22 1.0K
0.1%
U.S. Dept. of Health and Human Services US
158.71.132.0/22 1.0K
0.0%
U.S. Dept. of Health and Human Services US
158.74.32.0/22 1.0K
5.5%
U.S. Dept. of Health and Human Services US
158.70.16.0/23 512
0.0%
U.S. Dept. of Health and Human Services US
158.70.22.0/23 512
0.0%
U.S. Dept. of Health and Human Services US
158.70.30.0/23 512
0.2%
U.S. Dept. of Health and Human Services US
158.70.114.0/23 512
0.0%
U.S. Dept. of Health and Human Services US
158.70.144.0/23 512
1.4%
U.S. Dept. of Health and Human Services US
158.70.172.0/23 512
0.0%
U.S. Dept. of Health and Human Services US
158.71.142.0/23 512
0.0%
U.S. Dept. of Health and Human Services US
158.74.36.0/23 512
12.7%
U.S. Dept. of Health and Human Services US
198.179.0.0/23 512
3.7%
U.S. Dept. of Health and Human Services US Maryland Germantown
158.70.32.0/24 256
1.2%
U.S. Dept. of Health and Human Services US
158.70.112.0/24 256
0.0%
U.S. Dept. of Health and Human Services US
158.70.175.0/24 256
0.0%
U.S. Dept. of Health and Human Services US
158.71.138.0/24 256
0.4%
U.S. Dept. of Health and Human Services US
158.71.141.0/24 256
0.0%
U.S. Dept. of Health and Human Services US
158.71.225.0/24 256
2.0%
U.S. Dept. of Health and Human Services US
158.74.39.0/24 256
0.4%
U.S. Dept. of Health and Human Services US
198.102.218.0/24 256
0.0%
U.S. Dept. of Health and Human Services US
198.179.2.0/24 256
5.1%
U.S. Dept. of Health and Human Services US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS26810 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
158.71.0.0/17 3,945 2026-07-18 12:01:23
158.70.144.0/24 3,943 2026-07-18 12:01:23
158.71.192.0/19 3,941 2026-07-18 12:01:23
158.70.0.0/16 3,938 2026-07-18 12:01:23
158.74.0.0/16 3,932 2026-07-18 12:01:23
158.74.30.0/24 3,930 2026-07-18 12:01:23
162.99.192.0/19 3,927 2026-07-18 12:01:23
162.99.0.0/17 3,924 2026-07-18 12:01:23
158.72.139.0/24 3,919 2026-07-18 12:01:23
158.71.192.0/24 3,910 2026-07-18 12:01:23
158.71.128.0/18 3,910 2026-07-18 12:01:23
158.74.35.0/24 3,909 2026-07-18 12:01:23
158.72.0.0/16 3,907 2026-07-18 12:01:23
158.71.225.0/24 3,905 2026-07-18 12:01:23
162.99.128.0/18 3,902 2026-07-18 12:01:23
198.179.0.0/23 3,876 2026-07-18 12:01:23
198.179.2.0/24 3,851 2026-07-18 12:01:23
198.102.218.0/24 3,840 2026-07-18 12:01:23

Frequently Asked Questions

What is AS26810?

AS26810 is an Autonomous System Number assigned to U.S. Dept. of Health and Human Services. 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 AS26810 announce?

AS26810 announces 300.8K IPv4 addresses distributed across 49 routed CIDR prefixes. The network is registered in United States.

Who operates AS26810?

AS26810 is operated by U.S. Dept. of Health and Human Services. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS26810 registered in?

AS26810 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: 2026-07-18 12:40:28 UTC
Share