AS8640 — ZFS-GROUP

AS8640 announces 2 IPv4 prefixes covering 73,728 addresses and 0 IPv6 prefixes.

About this network

Zurich Insurance Company AG (ZFS-GROUP) — the corporate network of the Swiss insurance group headquartered in Zurich. The handle preserves the company's former name, Zurich Financial Services.

What it's used for

• Enterprise IT for a global insurance business: internal systems, corporate connectivity for offices and business units, and the group's public-facing services. Sampled rDNS in the announced space lands on Zurich's own infrastructure (for example ns5.zurich.com), not on customer or subscriber pools.
• No dynamic, DSL, PPPoE or CGN naming appears anywhere in the inventory — this is a single organisation's address space, not an access network.

Notable

• Around 73,000 IPv4 addresses, which is large for a non-telecom, but ordinary for a multinational financial-services group that numbered its internal estate with public addresses long before RFC 1918 habits took hold.
• The inventory is contiguous and self-registered: a 171.27.0.0/16 legacy block plus a coherent run of 195.28.224.0/19 RIPE space. That coherence is what separates a genuine enterprise from the scattered, third-party-registered shape of an address broker.

Interesting

• The handle is a fossil. Zurich Financial Services rebranded to Zurich Insurance Group in 2012, but the RIR object still carries ZFS-GROUP — a common pattern where the registry name outlives the company name by more than a decade.

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

Announced prefixes

• 171.27.0.0/16
• 195.28.224.0/19

Upstream networks

• AS32787 Akamai Technologies, Inc.
• AS8220 COLT Technology Services Group Limited

Adjacent networks

• AS32787 Akamai Technologies, Inc.
• AS8220 COLT Technology Services Group Limited

Routing security

• RPKI: 0 valid, 0 invalid and 10 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 30% of announcements registered; 7 route objects.
• Listed in as-sets: AS-BTGB-CUST, AS-EQUANT-SOUTHEUR, AS-ITXBR1, AS-KDDCUSTOMER2, AS-OBS-SOUTHEUR, AS-PROLE, AS-TELSTRA-INTL-CUSTOMERS, AS8220:AS-COLTCH, AS8220:AS-COLTUK.