Autonomous System

AS26810

U.S. Dept. of Health and Human Services

U.S. Dept. of Health and Human Services United States 🌐 hhs.gov

Announced IPs

300,800

CIDR prefixes

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

Baseline (neutral) 65
Enterprise allocation +4
Trust score 69 / 100

Experimental · trust-vectors model v1.2.0 — 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

CIDR	IPs	PTR Density	Organization	Country	State	City
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	Laurel
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	Hagerstown
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	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	—	—
158.71.138.0/24	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.

Prefix	Announcement samples	Last seen
158.74.30.0/24	21,206	2026-09-10 18:08:07
158.72.0.0/16	21,206	2026-09-10 18:08:07
158.72.139.0/24	21,154	2026-09-10 18:07:40
158.74.0.0/16	21,147	2026-09-10 18:08:07
162.99.192.0/19	21,117	2026-09-10 18:08:07
158.71.192.0/19	21,100	2026-09-10 18:07:40
158.71.128.0/18	21,092	2026-09-10 18:07:32
162.99.0.0/17	21,091	2026-09-10 18:07:40
158.70.0.0/16	21,084	2026-09-10 18:08:07
158.71.0.0/17	21,078	2026-09-10 18:08:07
162.99.128.0/18	21,074	2026-09-10 18:08:07
158.71.225.0/24	21,070	2026-09-10 18:08:07
158.70.144.0/24	21,065	2026-09-10 18:07:40
158.71.192.0/24	21,043	2026-09-10 18:07:40
158.74.35.0/24	20,748	2026-09-10 18:08:07
198.179.2.0/24	20,258	2026-09-10 18:07:32
198.179.0.0/23	19,471	2026-09-10 18:07:32
198.102.218.0/24	19,464	2026-09-10 18:08:07

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: 2026-09-10 18:11:07 UTC