AS9084 — GSI-AS European AS

AS9084 announces 13 IPv4 prefixes covering 4,352 addresses and 0 IPv6 prefixes.

About this network

AS9084 (GSI-AS) is registered to Goldman Sachs International, the London-based European arm of the Goldman Sachs investment bank.

What it's used for

This is corporate/enterprise infrastructure for a global financial institution, not a service-provider network. The AS announces around 17 small IPv4 prefixes (about 4,352 addresses) drawn from 204.4.128.0-region and 154.1.0.0-region blocks, homed to just two observed BGP neighbours. That shape (many /24s, minimal peering) is typical of an enterprise multihoming its own office and trading connectivity rather than routing customer traffic.

Notable

The space has been announced since 2000. The addresses back Goldman Sachs' internal networks, market-data connectivity and trading systems; no PTRs were returned on the addresses sampled, consistent with locked-down corporate infrastructure.

Interesting

Financial firms commonly run their own AS purely to control routing to exchanges, market-data feeds and counterparties over dedicated links, which is what the tiny neighbour count here reflects.

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

Announced prefixes

• 154.1.167.0/24
• 154.1.168.0/23
• 154.1.170.0/24
• 154.1.172.0/23
• 154.1.174.0/24
• 154.1.176.0/24
• 154.1.183.0/24
• 154.1.184.0/24
• 154.1.191.0/24
• 204.4.130.0/23
• 204.4.142.0/23
• 204.4.170.0/24
• 204.4.175.0/24

Upstream networks

• AS202 Level 3 Parent, LLC
• AS32787 Akamai Technologies, Inc.

Adjacent networks

• AS202 Level 3 Parent, LLC
• AS32787 Akamai Technologies, Inc.