AS36026 — AS-CHI-CORP

AS36026 announces 11 IPv4 prefixes covering 11,264 addresses and 0 IPv6 prefixes.

About this network

AS-CHI-CORP is the autonomous system for CommonSpirit Health, the largest Catholic hospital chain in the United States.

What it's used for

• The address space carries internal corporate infrastructure for a major healthcare provider, evidenced by netnames such as IMCOMAHA (Immanuel Medical Center), SJHMC (St. John's Health & Medical Center), and NETBLK-FHS-EAST.
• The AS announces 11 IPv4 prefixes totaling 11,264 addresses with only 5 observed neighbours, a ratio that indicates a finely subdivided internal corporate estate rather than an access or transit network.

Notable

• Registrants largely align with the announcer, listing CommonSpirit Health, though some prefixes retain legacy registrants like IMMANUEL MEDICAL CENTER and Dignity Health; Catholic Healthcare West.
• CommonSpirit Health was formed in 2016 through the merger of Dignity Health and Catholic Health Initiatives, which explains the mixed registrant history in the inventory.
• The inventory consists of 11 distinct IPv4 blocks with no IPv6 prefixes, reflecting a segmented internal network structure across various care sites.

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

Announced prefixes

• 160.76.1.0/24
• 160.76.2.0/23
• 160.76.4.0/22
• 160.76.252.0/23
• 160.76.254.0/24
• 162.135.176.0/23
• 162.135.180.0/23
• 168.112.8.0/21
• 199.34.0.0/22
• 205.167.128.0/23
• 209.193.112.0/20

Upstream networks

• AS7018 AT&T Enterprises, LLC
• AS3356 Level 3 Parent, LLC
• AS26794 Dakota Carrier Network
• AS33662 Comcast Cable Communications, LLC
• AS33650 Comcast Cable Communications, LLC

Adjacent networks

• AS7018 AT&T Enterprises, LLC
• AS3356 Level 3 Parent, LLC
• AS26794 Dakota Carrier Network
• AS33662 Comcast Cable Communications, LLC
• AS33650 Comcast Cable Communications, LLC