Autonomous system
AS6303 BARCLAYS-CAPITAL
Unclassified ARIN
Summary
Barclays Capital
enterprise finance legacy
The network of Barclays Capital, the investment-banking arm of the British bank Barclays, registered under the handle BARCLAYS-CAPITAL from New York City.
What it's used for
- Enterprise and trading connectivity for an investment bank: corporate systems, market-data feeds, and links to exchanges, counterparties and financial extranets.
- Its several thousand IPv4 addresses support the bank's own offices and applications; nothing here is sold on to third parties.
Notable
- A financial-institution network. Address space of this kind is typically tightly firewalled and rarely originates general-purpose internet traffic, so it is unusual to see it in ordinary web logs.
- ARIN records the assignment in early 1996, when large banks were among the first enterprises to run their own autonomous systems for resilient, multihomed connectivity.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 13 prefixes · 7.94K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 13 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS6303- Registry name
- BARCLAYS-CAPITAL
- Registrant
- Barclays Capital
- Abuse contact
- gtisntconnectivity1@barclayscapital.com
- Registered
- 1996-02-29
- Last changed
- 2012-04-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 45 with no ROA
- ROAs
- 0 authorising AS6303
- ASPA
- no ASPA record
- IRR
- 100% registered · 45 of 45 announcements
- Route objects
- 86 naming AS6303
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: 443 networks and 1,784 prefixes, as published 2026-10-19. 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