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	Prefix	Description
	155.139.205.0/24	Tenet HealthSystem Medical, Inc.

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS3257	GTT Communications Inc.	✔	✘

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Peers

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

ASHandle:       AS53487
OrgID:          VANGU-18
ASName:         VHS-BOMA
ASNumber:       53487
RegDate:        2010-05-17
Updated:        2020-05-14
Source:         ARIN



OrgID:          VANGU-18
OrgName:        Vanguard Health Management, Inc.
CanAllocate:    
Street:         20 Burton Hills Blvd.
Street:         Suite 100
City:           Nashville
State/Prov:     TN
Country:        US
PostalCode:     37215
RegDate:        2008-12-09
Updated:        2011-09-24
OrgAdminHandle: JSQ4-ARIN
OrgTechHandle:  JSQ4-ARIN
OrgAbuseHandle: JSQ4-ARIN
Source:         ARIN





OrgAdminHandle:       JSQ4-ARIN
OrgAdminName:         John Squeo
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        JSQ4-ARIN
OrgTechName:          John Squeo
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       JSQ4-ARIN
OrgAbuseName:         John Squeo
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-12-24T03:31:35Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-rbs	1
RADB	as-27506-transit	202
ALTDB	as-jarmtelco	649
RIPE	as-gttcust	89510