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	Prefix	Description
	146.203.0.0/18	Mount Sinai School of Medicine
	146.203.64.0/18	Mount Sinai School of Medicine
	146.203.128.0/21	Mount Sinai School of Medicine
	146.203.136.0/21	Mount Sinai School of Medicine
	146.203.138.0/24	Mount Sinai School of Medicine
	146.203.139.0/24	Mount Sinai School of Medicine
	146.203.144.0/22	Mount Sinai School of Medicine
	146.203.148.0/22	Mount Sinai School of Medicine
	146.203.148.0/24	Mount Sinai School of Medicine
	146.203.149.0/24	Mount Sinai School of Medicine
	146.203.150.0/24	Mount Sinai School of Medicine
	146.203.151.0/24	Mount Sinai School of Medicine
	146.203.192.0/18	Mount Sinai School of Medicine
	159.123.127.0/24	St. Luke's Roosevelt Hospital Center

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS3356	Lumen (Level 3)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS32787	Akamai (Prolexic)	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS32787	Akamai (Prolexic)	✔	✘
	AS7018	AT&T Enterprises, LLC	✔	✘
	AS3356	Lumen (Level 3)	✔	✘
	AS174	Cogent Communications, LLC	✔	✘
	AS3754	NYSERNet	✔	✘
	AS3630	NYSERNet	✔	✘
	AS1239	Sprint Wireline (Cogent)	✔	✘

ASHandle:       AS11452
OrgID:          MSSM
ASName:         MOUNT-SINAI
ASNumber:       11452
RegDate:        1998-08-27
Updated:        2012-03-02
TechHandle:     AP412-ARIN
Source:         ARIN



OrgID:          MSSM
OrgName:        Mount Sinai School of Medicine
CanAllocate:    
Street:         One Gustave L. Levy Place
Street:         Mailstop 1102
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10029-6574
RegDate:        1991-02-28
Updated:        2023-06-20
OrgAdminHandle: LAWRE33-ARIN
OrgTechHandle:  AP412-ARIN
OrgTechHandle:  GUNTH50-ARIN
OrgAbuseHandle: AP412-ARIN
OrgNOCHandle:   AP412-ARIN
OrgNOCHandle:   CRUZO-ARIN
Source:         ARIN





OrgAdminHandle:       LAWRE33-ARIN
OrgAdminName:         Paul Lawrence
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        AP412-ARIN
OrgTechName:          Andrew Pizzimenti
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        GUNTH50-ARIN
OrgTechName:          Doug Gunther
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       AP412-ARIN
OrgAbuseName:         Andrew Pizzimenti
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         AP412-ARIN
OrgNOCName:           Andrew Pizzimenti
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         CRUZO-ARIN
OrgNOCName:           Orquidia Cruz
# Email removed, Log into bgp.tools to see whois emails


TechHandle:           AP412-ARIN
TechName:             Andrew Pizzimenti
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2026-02-17T03:27:27Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as-nysr-de	34
RADB	as-telstra-testing-1	11790
LEVEL3	as-sprint-origins	7309
RADB	as-prole	1195
RADB	as3630:as-connectors	72
LEVEL3	as-lumen-customers-asns	10695
LEVEL3	as-level3-origins-na	0
RADB	as-kddcustomer2	8206
RADB	as3754:as-connectors	73
RADB	as-windstream-cust	2135
RADB	as-telstra-intl-customers	12016