AS11744 INVESTEC

INVESTEC is Investec Bank Ltd, the South African arm of the Investec banking and wealth-management group. The address space is the giveaway on geography: every prefix registers in AFRINIC under ORG-IBL1-AFRINIC, and 196.4.0.0/16 is African space. Investec Bank Limited is the Johannesburg-registered entity, distinct from Investec Bank plc in the UK.

What it's used for

The bank's own corporate and public-facing edge. RIS sees 6 IPv4 prefixes, 1,280 addresses, no IPv6, and 18 observed neighbours. All six prefixes are registered to Investec Bank Ltd itself, so registrant and originator are the same party and no third-party space is in play.

Notable

The neighbour count deserves the explanation, because eighteen adjacencies against only 1,280 addresses looks disproportionate at first glance. It is not a transit signal. It is what a bank in a well-peered market looks like: financial institutions in South Africa connect at local exchanges such as JINX and NAPAfrica, where a single port yields many BGP sessions at once. Peering widely while announcing a tiny inventory is the opposite of a carrier's shape — a carrier has many neighbours because it moves other people's traffic, whereas this AS has many neighbours to shorten the path to its own customers' banking sessions. It sells no connectivity onward.

Interesting

The deaggregation is heavy for the size — a /23 plus five /24s covering barely more than a thousand addresses. Announcing the /23 alongside its component /24s is a standard defensive and traffic-engineering move: the more specifics steer traffic per-peer, and the covering prefix keeps reachability if a specific is dropped. For a bank, where a hijack of a customer-facing prefix is a fraud vector rather than an inconvenience, that redundancy is a security posture as much as a routing one.