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	Prefix	Description
	12.107.172.0/24	BCBS OF MI
	12.176.249.0/24	BCBS OF MI
	12.231.98.0/24	BCBS OF MI
	167.242.0.0/16	Blue Cross Blue Shield of Michigan
	167.242.45.0/24	Blue Cross Blue Shield of Michigan
	167.242.46.0/24	Blue Cross Blue Shield of Michigan
	167.242.123.0/24	Blue Cross Blue Shield of Michigan
	167.242.124.0/24	Blue Cross Blue Shield of Michigan
	167.242.128.0/17	Blue Cross Blue Shield of Michigan

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS3356	Lumen (Level 3)	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS3356	Lumen (Level 3)	✔	✘
	AS271253	LINK BRASIL TELECOMUNICACOES LTDA	✔	✘

ASHandle:       AS30356
OrgID:          BCBSMMI-1
ASName:         BCBSM
ASNumber:       30356
RegDate:        2017-11-06
Updated:        2017-11-06
Source:         ARIN



OrgID:          BCBSMMI-1
OrgName:        Blue Cross Blue Shield of Michigan Mutual Insurance
CanAllocate:    
Street:         600 East Lafayette
City:           Detroit
State/Prov:     MI
Country:        US
PostalCode:     48226
RegDate:        2017-07-20
Updated:        2017-07-20
OrgAdminHandle: ZISKI-ARIN
OrgTechHandle:  NAVAR2-ARIN
OrgAbuseHandle: ZISKI-ARIN
OrgNOCHandle:   ZISKI-ARIN
Source:         ARIN





OrgAdminHandle:       ZISKI-ARIN
OrgAdminName:         Kevin Ziskie
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        NAVAR2-ARIN
OrgTechName:          Paul Navaraj
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ZISKI-ARIN
OrgAbuseName:         Kevin Ziskie
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         ZISKI-ARIN
OrgNOCName:           Kevin Ziskie
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-05-07T03:37:51Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-lumen-customers-asns	10695
LEVEL3	as-19855	139
ARIN	as19855:as-customers	134