AS8619 — closebrothers-as Close Brothers Limited

AS8619 announces 2 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

CLOSEBROTHERS-AS — Close Brothers Limited, the UK merchant banking group. The AS carries the bank's own corporate network, not a service sold to anyone else.

What it's used for

• Enterprise connectivity for Close Brothers itself. The AS announces two /24s and nothing more (about 500 IPv4 addresses), with a single BGP neighbour: a classic multihoming-ready but effectively stub corporate AS.
• The RIPE prefix is registered directly to the bank with the netname closebrothers-net. The second /24 sits in ARIN-originated space administered through RIPE.
• No rDNS is published on either prefix. That is deliberate and normal for a financial institution's edge: nothing about the internal estate is advertised in DNS.

Notable

• Corporate address space. There is no hosting, no transit and no customer space here — an AS number exists purely so the bank can run BGP at its own internet edge for resilience and address portability.
• Small inventory, single upstream, no rDNS: this shape is very common among banks, insurers and law firms, and it looks nothing like a service provider's.

Interesting

• Close Brothers is one of the older names in the City of London, founded in 1878. Its network footprint on the public internet is about as small as an AS-holding organisation's can get.

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

Announced prefixes

• 193.104.175.0/24
• 216.99.222.0/24

Upstream networks

• AS202 Level 3 Parent, LLC

Adjacent networks

• AS202 Level 3 Parent, LLC

Routing security

• RPKI: 0 valid, 0 invalid and 2 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 2 route objects.