ASN AS19574 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19574?

AS19574 is listed under Corporation Service Company.

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.

AS19574 Corporation Service Company

ASN Lookup Tool

Corporation Service Company cscinfo.com

US 7 Routes

AS Data

AS19574

AS19574 – Corporation Service Company

AS Number	19574
AS Name	CSC
Organization	Corporation Service Company(corpo-9)
Country	US
Website	cscinfo.com
Number of IPv4 Routes	6
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2007-12-21

ASN Intelligence API for production workflows

Use ASN data for AS19574 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
165.160.16.0/24	AS19574	Corporation Service Company	Corporation Service Company	256
2620:8a::/48	AS19574	Corporation Service Company	Corporation Service Company	~1×10²⁴
165.160.32.0/21	AS19574	Corporation Service Company	Corporation Service Company	2048
165.160.12.0/24	AS19574	Corporation Service Company	Corporation Service Company	256
165.160.14.0/24	AS19574	Corporation Service Company	Corporation Service Company	256
165.160.15.0/24	AS19574	Corporation Service Company	Corporation Service Company	256
165.160.13.0/24	AS19574	Corporation Service Company	Corporation Service Company	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:       19574
ASName:         CSC
ASHandle:       AS19574
RegDate:        2007-12-21
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/19574


OrgName:        Corporation Service Company
OrgId:          CORPO-9
Address:        251 Little Falls Drive
City:           Wilmington
StateProv:      DE
PostalCode:     19808
Country:        US
RegDate:        2004-03-09
Updated:        2024-10-31
Ref:            https://rdap.arin.net/registry/entity/CORPO-9


OrgTechHandle: ARINT19-ARIN
OrgTechName:   ArinTech
OrgTechPhone:  +1-302-636-5400 
OrgTechEmail:  arintech@cscinfo.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ARINT19-ARIN

OrgAbuseHandle: DOMAI486-ARIN
OrgAbuseName:   Domain Abuse
OrgAbusePhone:  +1-302-636-5400 
OrgAbuseEmail:  domainabuse@cscglobal.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DOMAI486-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS701	Verizon Business/UUnet	US
AS3356	Level 3 Parent, LLC	US
AS701	Verizon Business	US
AS33657	Comcast Cable Communications, LLC	US