AS20437 — AS20437 - Nationwide Mutual Insurance Company

AS20437 announces 2 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

AS20437 is operated by Nationwide Mutual Insurance Company.

What it's used for

• The address space is registered under the netname NATE for the 155.188.0.0/23 block, indicating a corporate internal network rather than public consumer access.
• The AS announces 1024 IPv4 addresses across 2 prefixes with only 1 observed neighbour, a ratio consistent with a private corporate estate or internal business infrastructure.

Notable

• The registrant for the 155.188.0.0/23 prefix is Nationwide Mutual Insurance Company, matching the AS holder, while the 204.145.192.0/23 prefix lists American Registry for Internet Numbers as the registrant.
• The inventory consists of two /23 blocks, one of which is directly registered to the insurance company and the other to the registry, suggesting a mix of owned and potentially leased or legacy space.

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

Announced prefixes

• 155.188.0.0/23
• 204.145.192.0/23

Upstream networks

• AS701 Verizon Business
• AS20231 Charter Communications Inc

Adjacent networks

• AS701 Verizon Business
• AS20231 Charter Communications Inc

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 6 route objects.