AS21573 — HEALTHPARTNERS

AS21573 announces 5 IPv4 prefixes covering 4,352 addresses and 0 IPv6 prefixes.

About this network

The AS handle HEALTHPARTNERS is held by HealthPartners, a major healthcare provider and insurer based in Minnesota.

What it's used for

• The address space carries corporate infrastructure for a healthcare organization, evidenced by the reverse DNS record 109.net.healthpartners.com and netnames such as HEALTHP-1 and HEALTHPARTNERS-1.
• The AS announces 4352 IPv4 addresses across 5 prefixes with only 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.

Notable

• All registrants in the RDAP data agree with the announcer, consistently listing "HealthPartners" as the registrant for prefixes including 198.153.8.0/21 and 198.174.108.0/22.
• The address inventory is finely subdivided into five distinct blocks, consistent with internal site-by-site segmentation for a large corporate estate.

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

Announced prefixes

• 198.153.8.0/21
• 198.174.108.0/22
• 198.175.194.0/23
• 198.175.196.0/23
• 206.146.129.0/24

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS13367 Comcast Cable Communications, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS13367 Comcast Cable Communications, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 9 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 11% of announcements registered; 3 route objects.
• Listed in as-sets: AS-COMCAST-EDIA.