AS63174 — LAS-COLO2 - Blue Shield of California

AS63174 announces 3 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

LAS-COLO2 is operated by Blue Shield of California.

What it's used for

• The address space carries corporate IT infrastructure, as indicated by the netname BSCAL and registrant "Blue Shield of California; IT-Network Engineering" across all prefixes.
• The AS announces 1024 IPv4 addresses across 3 prefixes with 5 observed neighbours, a ratio consistent with an internal corporate estate rather than a transit or access provider.
• Traffic from this AS consists of internal office workers, web/API endpoints, and administrative systems for the health insurance company.

Notable

• All registrants agree with the announcer, consistently listing "Blue Shield of California; IT-Network Engineering" for the prefixes 165.253.64.0/23, 165.253.43.0/24, and 165.253.144.0/24.
• The address inventory is small and finely subdivided into three distinct blocks, reflecting site-by-site segmentation typical of a large enterprise network.

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

Announced prefixes

• 165.253.43.0/24
• 165.253.64.0/23
• 165.253.144.0/24

Upstream networks

• AS701 Verizon Business
• AS22911 SINAP-TIX, LLC
• AS174 Cogent Communications, LLC
• AS23005 SWITCH, LTD
• AS3356 Level 3 Parent, LLC

Adjacent networks

• AS701 Verizon Business
• AS22911 SINAP-TIX, LLC
• AS174 Cogent Communications, LLC
• AS23005 SWITCH, LTD
• AS3356 Level 3 Parent, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 3 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 67% of announcements registered; 4 route objects.
• Listed in as-sets: AS-AS22911, AS-AS23005.