ASN AS18971 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18971?

AS18971 is listed under BARCLAYS FINANCIAL CORP..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS18971 BARCLAYS FINANCIAL CORP.

ASN Lookup Tool

BARCLAYS FINANCIAL CORP. barclays.com

US 2 Routes

AS Data

AS18971

AS18971 – BARCLAYS FINANCIAL CORP.

AS Number	18971
AS Name	BCUS
Organization	BARCLAYS FINANCIAL CORP.(bfc-47)
Country	US
Website	barclays.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2000-11-02

ASN Intelligence API for production workflows

Use ASN data for AS18971 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
146.127.245.0/24	AS18971	BARCLAYS FINANCIAL CORP.	Barclays Capital	256
146.127.247.0/24	AS18971	BARCLAYS FINANCIAL CORP.	Barclays Capital	256

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       18971
ASName:         BCUS
ASHandle:       AS18971
RegDate:        2000-11-02
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/18971


OrgName:        BARCLAYS FINANCIAL CORP.
OrgId:          BFC-47
Address:        100 S. WEST STREET
City:           WILMINGTON
StateProv:      DE
PostalCode:     19801
Country:        US
RegDate:        2007-07-06
Updated:        2025-07-21
Ref:            https://rdap.arin.net/registry/entity/BFC-47


OrgTechHandle: NETWO3086-ARIN
OrgTechName:   NETWORK ADMIN
OrgTechPhone:  +1-302-255-8299 
OrgTechEmail:  gtisntconnectivity1@barclayscapital.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO3086-ARIN

OrgAbuseHandle: NETWO3086-ARIN
OrgAbuseName:   NETWORK ADMIN
OrgAbusePhone:  +1-302-255-8299 
OrgAbuseEmail:  gtisntconnectivity1@barclayscapital.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO3086-ARIN

OrgDNSHandle: NETWO3086-ARIN
OrgDNSName:   NETWORK ADMIN
OrgDNSPhone:  +1-302-255-8299 
OrgDNSEmail:  gtisntconnectivity1@barclayscapital.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/NETWO3086-ARIN

OrgDNSHandle: LEBED9-ARIN
OrgDNSName:   Lebedinec, Dmitrij 
OrgDNSPhone:  + 44   7441462399 
OrgDNSEmail:  dmitrij.lebedinec@barclays.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/LEBED9-ARIN

OrgRoutingHandle: NETWO3086-ARIN
OrgRoutingName:   NETWORK ADMIN
OrgRoutingPhone:  +1-302-255-8299 
OrgRoutingEmail:  gtisntconnectivity1@barclayscapital.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NETWO3086-ARIN

OrgNOCHandle: NETWO3086-ARIN
OrgNOCName:   NETWORK ADMIN
OrgNOCPhone:  +1-302-255-8299 
OrgNOCEmail:  gtisntconnectivity1@barclayscapital.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO3086-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number	Description	Country
AS14733	Barclays Capital Inc.	US
AS701	Verizon Business/UUnet	US
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS701	Verizon Business	US
AS32787	Akamai Technologies, Inc.	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US
AS6461	Zayo Bandwidth	US
AS701	Verizon Business	US
AS32787	Akamai Technologies, Inc.	US

Downstreams

AS Number	Description	Country
AS14733	Barclays Capital Inc.	US