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WorldIP.io
Autonomous System

AS26810

U.S. Dept. of Health and Human Services

Announced IPs
298,496
CIDR prefixes
46
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 v1.3.0 — 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 Baltimore
158.71.0.0/17 32.8K
0.1%
U.S. Dept. of Health and Human Services US District of Columbia Washington
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 District of Columbia Washington
158.70.192.0/18 16.4K
0.4%
U.S. Dept. of Health and Human Services US Maryland Columbia
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
1.0%
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
10.2%
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
0.1%
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
12.9%
U.S. Dept. of Health and Human Services US — —
198.179.0.0/23 512
6.1%
U.S. Dept. of Health and Human Services US District of Columbia Washington
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 — —
158.71.141.0/24 256
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
0.0%
U.S. Dept. of Health and Human Services US — —
198.102.218.0/24 256
0.4%
U.S. Dept. of Health and Human Services US — —
198.179.2.0/24 256
8.2%
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
158.74.35.0/24 37,108 2026-11-14 22:21:03
198.179.2.0/24 36,836 2026-11-14 22:21:03
158.72.0.0/16 36,196 2026-11-14 22:21:03
158.74.30.0/24 36,158 2026-11-14 22:21:03
158.72.139.0/24 36,113 2026-11-14 22:21:03
158.71.192.0/19 35,891 2026-11-14 22:21:03
162.99.192.0/19 35,888 2026-11-15 00:58:59
158.74.0.0/16 35,841 2026-11-14 22:21:03
158.70.0.0/16 35,821 2026-11-14 22:21:03
162.99.128.0/18 35,794 2026-11-15 00:58:59
162.99.0.0/17 35,787 2026-11-15 00:58:59
158.71.0.0/17 35,776 2026-11-14 22:21:03
158.70.144.0/24 35,775 2026-11-14 22:21:03
158.71.225.0/24 35,749 2026-11-14 22:21:03
158.71.192.0/24 35,743 2026-11-14 22:21:03
198.179.0.0/23 33,951 2026-11-14 22:21:03
198.102.218.0/24 33,925 2026-11-14 22:21:03
158.71.128.0/18 33,140 2026-10-21 01:23:51

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 298.5K IPv4 addresses distributed across 46 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: 2026-11-15 01:24:05 UTC
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