Autonomous system
AS8619 closebrothers-as Close Brothers Limited
Unclassified RIPE
Summary
Close Brothers
enterprise finance legacy
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS202 | Level 3 Parent, LLC | 122 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-03, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| GB | United Kingdom | 2 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS8619- Registry name
- closebrothers-as
- Registrant
- LeadertelecomBV-mnt
- Abuse contact
- roger.dingley@closebrothers.com
- Registered
- 2015-10-14
- Last changed
- 2020-11-30
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS8619
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 2 naming AS8619
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 451 networks and 1,853 prefixes, as published 2026-11-04. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere