ASN Lookup Tool

CapitalSource Finance LLC capitalsource.com US US 1 Routes

AS Data

AS21923

AS21923 – CapitalSource Finance LLC

AS Number 21923
AS Name CS-AS-NAME
Organization CapitalSource Finance LLC(cfl-41)
Country US
Website capitalsource.com
Number of IPv4 Routes 1
Number of IPv6 Routes 0
ASN type BUSINESS
Registry ARIN
Date Allocated 2007-01-11

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Use ASN data for AS21923 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
12.150.170.0/24 256

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:       21923
ASName:         CS-AS-NAME
ASHandle:       AS21923
RegDate:        2007-01-11
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/21923


OrgName:        CapitalSource Finance LLC
OrgId:          CFL-41
Address:        5404 Wisconsin Ave, 2nd Floor
City:           Chevy Chase
StateProv:      MD
PostalCode:     20815
Country:        US
RegDate:        2006-12-21
Updated:        2012-10-25
Ref:            https://rdap.arin.net/registry/entity/CFL-41


OrgAbuseHandle: ISPAL-ARIN
OrgAbuseName:   ISP Alerts
OrgAbusePhone:  +1-301-841-2807 
OrgAbuseEmail:  isp_alerts@capitalsource.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ISPAL-ARIN

OrgTechHandle: ISPAL-ARIN
OrgTechName:   ISP Alerts
OrgTechPhone:  +1-301-841-2807 
OrgTechEmail:  isp_alerts@capitalsource.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ISPAL-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
AS7018 AT&T Enterprises, LLC US

Upstreams

AS Number Description Country
AS7018 AT&T Enterprises, LLC US

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Frequently Asked Questions

ASN AS21923 is an Autonomous System Number used to identify a network for BGP internet routing.
AS21923 is listed under CapitalSource Finance LLC.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.