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	Prefix	Description
	199.187.64.0/21	Premera Blue Cross
	199.187.70.0/24	Premera Blue Cross
	199.187.88.0/23	Premera Blue Cross
	199.187.89.0/24	Premera Blue Cross

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS14744	Unitas Global	✔	✘
	AS3257	GTT Communications Inc.	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS14744	Unitas Global	✔	✘
	AS3257	GTT Communications Inc.	✔	✘
	AS8928	GTT Communications Inc.	✔	✘

ASHandle:       AS399776
OrgID:          PBC-39
ASName:         PBC-SEA-WA-POP
ASNumber:       399776
RegDate:        2021-06-11
Updated:        2021-06-11
Source:         ARIN



OrgID:          PBC-39
OrgName:        Premera Blue Cross
CanAllocate:    
Street:         7001 220th ST SW
City:           Mountlake Terrace
State/Prov:     WA
Country:        US
PostalCode:     98043
RegDate:        2003-03-21
Updated:        2021-03-26
OrgAdminHandle: ZP99-ARIN
OrgTechHandle:  ZP99-ARIN
OrgAbuseHandle: ZP99-ARIN
Source:         ARIN





OrgAdminHandle:       ZP99-ARIN
OrgAdminName:          Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ZP99-ARIN
OrgTechName:           Network Operations
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ZP99-ARIN
OrgAbuseName:          Network Operations
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-06-10T03:35:42Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-pnapsef	237
RIPE	as-gttcust	91743
RADB	as-pnapdalz	317