AS6646 — AETNA - Aetna, Inc.

AS6646 announces 1 IPv4 prefixes covering 16,384 addresses and 0 IPv6 prefixes.

About this network

AETNA is the corporate network of Aetna, Inc., the health insurance company headquartered at 151 Farmington Avenue in Hartford, Connecticut. Aetna has been part of CVS Health since 2018.

What it's used for

• Aetna's own enterprise network: corporate connectivity, member- and provider-facing systems, and internal infrastructure.
• Announces roughly 16k IPv4 addresses, essentially all of it out of a single contiguous 206.213.0.0-range allocation.

Notable

• This is a classic Fortune-500 enterprise AS: a large company that runs its own multihomed network but sells no connectivity to anyone. It is not an ISP or a hosting provider despite the sizeable address count.
• ARIN records date the ASN registration to 1996, back when a large insurer building out its own internet presence was still a notable step.

Interesting

• Health insurers were among the earliest non-technology enterprises to get their own AS numbers, driven by the need to exchange claims data reliably with hospitals, clearinghouses, and employers.

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

Announced prefixes

• 206.213.192.0/18

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS46887 Crown Castle Fiber LLC
• AS7018 AT&T Enterprises, LLC

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS46887 Crown Castle Fiber LLC
• AS7018 AT&T Enterprises, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 20 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 5% of announcements registered; 5 route objects.
• Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-CWCUSTEU, AS-VES-DS.