asn.dev

Autonomous system

AS18971 BC

Unclassified ARIN

IPv4 addresses 512 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 1 downstream
Flagged prefixes 0 none

Summary

Barclays

United States of America · AI-generated

business finance corporate internal

The AS handle BC is held by Barclays Financial Corp.

What it's used for

  • The address space carries internal corporate infrastructure, evidenced by the netname BARCLAYS-CAPITAL and registrant Barclays Capital for both announced prefixes.
  • The inventory consists of 512 IPv4 addresses across 2 prefixes, with 5 observed neighbours. This low neighbour count relative to the address space indicates an internal corporate estate rather than a transit or access network.

Notable

  • The registrants Barclays Capital align with the announcer BCUS - BARCLAYS FINANCIAL CORP., confirming the space is owned by the financial institution.
  • The address inventory is finely subdivided into two /24 blocks, consistent with site-by-site segmentation for a large corporation.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 1 downstream and 4 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS32787Akamai Technologies, Inc.120

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America2

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS18971
Registry name
BCUS
Registrant
BARCLAYS FINANCIAL CORP.
Abuse contact
gtisntconnectivity1@barclayscapital.com
Registered
2000-11-02
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS18971
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
70 naming AS18971

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: 442 networks and 1,779 prefixes, as published 2026-10-22. 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

Cross-check