AS3379 — KAISER-NCAL

AS3379 announces 17 IPv4 prefixes covering 26,880 addresses and 1 IPv6 prefixes.

About this network

The network of Kaiser Foundation Health Plan, Inc. (KAISER-NCAL) — the Northern California arm of Kaiser Permanente, one of the largest integrated healthcare systems in the United States.

What it's used for

• Corporate and clinical networking for Kaiser Permanente: hospitals, medical offices, data centres, and administrative sites.
• Carrying a healthcare enterprise's internal systems — electronic health records, imaging, member services — rather than selling connectivity.

Notable

• An enterprise end-user network, not an ISP or a hosting provider. Addresses here belong to Kaiser facilities and staff.
• The handle's NCAL suffix reflects Kaiser's regional structure; Northern California is its founding and largest region.

Interesting

• Kaiser announces a long tail of small prefixes, which is what a network built out of hundreds of clinics and medical office buildings tends to look like.

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

Announced prefixes

• 12.138.248.0/24
• 12.160.226.0/24
• 12.222.26.0/24
• 162.119.0.0/22
• 162.119.5.0/24
• 162.119.6.0/23
• 162.119.8.0/24
• 162.119.11.0/24
• 162.119.13.0/24
• 162.119.14.0/23
• 162.119.16.0/22
• 162.119.128.0/19
• 162.119.160.0/22
• 162.119.178.0/23
• 162.119.224.0/19
• 198.140.8.0/21
• 199.16.0.0/21
• 2620:190::/32

Upstream networks

• AS7018 AT&T Enterprises, LLC
• AS3356 Level 3 Parent, LLC
• AS33650 Comcast Cable Communications, LLC

Adjacent networks

• AS7018 AT&T Enterprises, LLC
• AS3356 Level 3 Parent, LLC
• AS33650 Comcast Cable Communications, LLC

Routing security

• RPKI: 35 valid, 0 invalid and 3 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 5% of announcements registered; 5 route objects.
• Listed in as-sets: AS-CHTR-SYNC, AS-COMCAST-EDIA, AS-RR-BIZ.