AS19050 — TIC-DHHS-INTERIOR

AS19050 announces 9 IPv4 prefixes covering 2,560 addresses and 3 IPv6 prefixes.

About this network

TIC-DHHS-INTERIOR is operated by the U.S. Department of Health & Human Services.

What it's used for

• The address space carries internal government infrastructure, evidenced by netnames UDHHS-4, NET-HHS2, CMSNET, and NET-HHS5, and reverse DNS entries pointing to net.nih.gov hosts such as bth-tic-edge-rt-a-lo0.net.nih.gov and cul-tic-cms-pe-b.net.nih.gov.
• The AS announces 2560 IPv4 addresses across 9 prefixes and 3 IPv6 prefixes, with 8 observed neighbours; this ratio of moderate address space against a low neighbour count indicates an internal corporate estate rather than a transit or access network.

Notable

• All registrants align with the announcer, consistently identifying the U.S. Department of Health & Human Services, with specific sub-registrants including CMS IT Service Desk and Abuse contacts.
• The inventory is finely subdivided into multiple /24 and /23 blocks, reflecting site-by-site segmentation typical of a large federal agency's internal network.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 156.40.93.0/24
• 156.40.94.0/23
• 156.40.197.0/24
• 156.40.246.0/24
• 158.71.224.0/24
• 158.73.30.0/24
• 158.73.183.0/24
• 158.73.196.0/24
• 158.74.38.0/24
• 2607:f220:10::/44
• 2607:f220:f1::/48
• 2607:f220:200::/48

Upstream networks

• AS15029 U.S. Department of Health & Human Services

Downstream networks

• AS70 National Library of Medicine
• AS26810 U.S. Dept. of Health and Human Services
• AS30387 National Institutes of Health
• AS5766 Indian Health Service
• AS3527 National Institutes of Health
• AS13611 U.S. Center For Disease Control and Prevention
• AS22828 United States Food and Drug Administration

Adjacent networks

• AS15029 U.S. Department of Health & Human Services
• AS70 National Library of Medicine
• AS26810 U.S. Dept. of Health and Human Services
• AS30387 National Institutes of Health
• AS3527 National Institutes of Health
• AS5766 Indian Health Service
• AS13611 U.S. Center For Disease Control and Prevention
• AS22828 United States Food and Drug Administration