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AS15073 Blue Shield of California

Q: Why is WHOIS data shown for an ASN?

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

ASN Lookup Tool

Blue Shield of California blueshieldca.com

US 3 Routes

AS Data

AS15073

AS15073 – Blue Shield of California

AS Number	15073
AS Name	BSC-BRANCHOFFICE02
Organization	Blue Shield of California(bsc-1)
Country	US
Website	blueshieldca.com
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2005-06-27

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Use ASN data for AS15073 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
165.253.106.0/24	AS15073	Blue Shield of California	Blue Shield of California	256
8.21.31.0/24	AS15073	Blue Shield of California	Level 3 Parent, LLC	256
165.253.102.0/24	AS15073	Blue Shield of California	Blue Shield of California	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:       15073
ASName:         BSC-BRANCHOFFICE02
ASHandle:       AS15073
RegDate:        2005-06-27
Updated:        2022-01-05    
Ref:            https://rdap.arin.net/registry/autnum/15073


OrgName:        Blue Shield of California
OrgId:          BSC-1
Address:        4203 Town Center Blvd
City:           El Dorado Hills
StateProv:      CA
PostalCode:     95762
Country:        US
RegDate:        1993-10-18
Updated:        2021-11-15
Ref:            https://rdap.arin.net/registry/entity/BSC-1


OrgTechHandle: ITNET15-ARIN
OrgTechName:   IT-Network Engineering
OrgTechPhone:  +1-916-350-7507 
OrgTechEmail:  IT-NetworkEngineering@blueshieldca.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ITNET15-ARIN

OrgAbuseHandle: ITSIR-ARIN
OrgAbuseName:   IT-SIRT
OrgAbusePhone:  +1-916-350-7005 
OrgAbuseEmail:  abuse@blueshieldca.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ITSIR-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS3356	Level 3 Parent, LLC	US

Contacts

Email Contacts

IT-NetworkEngineering@blueshieldca.com

Abuse Contacts

abuse@blueshieldca.com

Frequently Asked Questions

What is ASN AS15073?

ASN AS15073 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS15073?

AS15073 is listed under Blue Shield of California.

What do peers, upstreams, and downstreams mean?

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 included here?

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

How can I access full ASN table data?

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.