AS10129 — SSMB-AS-AP Salomon Smith Barney Australia Pty Ltd

AS10129 announces 1 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

SSMB-AS-AP is registered to Salomon Smith Barney Australia Pty Ltd, the Australian arm of what was Citigroup's investment-banking and brokerage business. AS10129 is a financial firm's own corporate network, still originating its legacy address space.

What it's used for

Corporate connectivity for a broker-dealer: office egress, market-data and order-routing links, and internet-facing services. The AS announces 4 IPv4 prefixes totalling 1,024 addresses — 192.193.0.0/24 through 192.193.3.0/24 — and no IPv6. Splitting a /22 that way is inbound traffic engineering across upstreams, a habit of latency-sensitive trading networks rather than of ISPs.

Notable

This is an enterprise network. 1,024 addresses against 2 observed BGP neighbours cannot be a provider of any kind: a wholesale carrier peers with hundreds to thousands of ASes, and no hosting business runs on a single /22. Two upstreams and one legacy block is a company multihoming for its own resilience. Geolocate this space to a corporate site in Australia.

Interesting

The name is a fossil. Salomon Smith Barney was renamed Citigroup Global Markets in April 2003 and the brand was dropped entirely later that year, yet the APNIC record still carries it more than two decades on. Handles and legal names in the registry outlive the companies they describe, which is precisely why the holder name should never be the sole basis for classifying an AS. The routing, not the label, is what still shows a live enterprise network here.

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

Announced prefixes

• 192.193.0.0/22

Upstream networks

• AS2764 AAPT Limited
• AS4637 Telstra Global

Adjacent networks

• AS2764 AAPT Limited
• AS4637 Telstra Global

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 3 route objects.
• Listed in as-sets: AS-CTBC-CUSTOMERS117, AS-KDDCUSTOMER2, AS-OPTUS, AS-TELSTRA-INTL-CUSTOMERS, AS-TELSTRA-INTL-CUSTOMERS-4637, AS-UDOS, AS24130:AS-CUSTOMERS, AS2764:AS-BGP-CUSTS, AS2764:AS-CUSTOMERS-APF:AS10223.