AS26305 — ASN-SSM

AS26305 announces 2 IPv4 prefixes covering 67,584 addresses and 1 IPv6 prefixes.

About this network

ASN-SSM is operated by SSM Health, a large Catholic non-profit health system in the United States.

What it's used for

• The address space is primarily registered under the netname SSMHC-NET with registrant SSM Health Care, indicating an internal corporate network for a healthcare provider.
• The AS announces 67,584 IPv4 addresses across 10 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access network.

Notable

• Registrants for the majority of prefixes align with the announcer, identified as SSM Health Care.
• One prefix, 67.66.136.0/21, is registered to AT&T Enterprises, LLC with netname SBCIS-SIS80, suggesting leased or legacy space within the AS.
• The inventory is dominated by the 165.104.0.0/16 range, subdivided into multiple smaller blocks, reflecting site-by-site segmentation typical of a large multi-facility organization.

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

Announced prefixes

• 67.66.136.0/21
• 165.104.0.0/16
• 2620:1f6::/36

Upstream networks

• AS22677 Charter Communications LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS22677 Charter Communications LLC
• AS7018 AT&T Enterprises, LLC