ASN AS11452 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11452?

AS11452 is listed under Mount Sinai School of Medicine.

What do peers, upstreams, and downstreams mean in ASN data?

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 shown for an ASN?

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

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS11452 Mount Sinai School of Medicine

ASN Lookup Tool

Mount Sinai School of Medicine mountsinai.org

US 14 Routes

AS Data

AS11452

AS11452 – Mount Sinai School of Medicine

AS Number	11452
AS Name	MOUNT-SINAI
Organization	Mount Sinai School of Medicine(mssm)
Country	US
Website	mountsinai.org
Number of IPv4 Routes	14
Number of IPv6 Routes	0
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1998-08-27

ASN Intelligence API for production workflows

Use ASN data for AS11452 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
146.203.136.0/21	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	2048
159.123.127.0/24	AS11452	Mount Sinai School of Medicine	St. Luke's Roosevelt Hospital Center	256
146.203.138.0/24	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	256
146.203.64.0/18	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	16384
146.203.144.0/22	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	1024
146.203.149.0/24	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	256
146.203.148.0/22	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	1024
146.203.128.0/21	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	2048
146.203.139.0/24	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	256
146.203.151.0/24	AS11452	Mount Sinai School of Medicine	Mount Sinai School of Medicine	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:       11452
ASName:         MOUNT-SINAI
ASHandle:       AS11452
RegDate:        1998-08-27
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/11452


OrgName:        Mount Sinai School of Medicine
OrgId:          MSSM
Address:        One Gustave L. Levy Place
Address:        Mailstop 1102
City:           New York
StateProv:      NY
PostalCode:     10029-6574
Country:        US
RegDate:        1991-02-28
Updated:        2023-06-20
Ref:            https://rdap.arin.net/registry/entity/MSSM


OrgNOCHandle: AP412-ARIN
OrgNOCName:   Pizzimenti, Andrew 
OrgNOCPhone:  +1-212-241-4929 
OrgNOCEmail:  andrew.pizzimenti@mssm.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/AP412-ARIN

OrgTechHandle: AP412-ARIN
OrgTechName:   Pizzimenti, Andrew 
OrgTechPhone:  +1-212-241-4929 
OrgTechEmail:  andrew.pizzimenti@mssm.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/AP412-ARIN

OrgTechHandle: GUNTH50-ARIN
OrgTechName:   Gunther, Doug 
OrgTechPhone:  +1-212-814-4541 
OrgTechEmail:  doug.gunther@mountsinai.org
OrgTechRef:    https://rdap.arin.net/registry/entity/GUNTH50-ARIN

OrgAbuseHandle: AP412-ARIN
OrgAbuseName:   Pizzimenti, Andrew 
OrgAbusePhone:  +1-212-241-4929 
OrgAbuseEmail:  andrew.pizzimenti@mssm.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AP412-ARIN

OrgNOCHandle: CRUZO-ARIN
OrgNOCName:   Cruz, Orquidia 
OrgNOCPhone:  +1-646-201-6425 
OrgNOCEmail:  Orquidia.Cruz@mssm.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/CRUZO-ARIN

RTechHandle: AP412-ARIN
RTechName:   Pizzimenti, Andrew 
RTechPhone:  +1-212-241-4929 
RTechEmail:  andrew.pizzimenti@mssm.edu
RTechRef:    https://rdap.arin.net/registry/entity/AP412-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
AS1239	Cogent Communications, LLC	US
AS3754	NYSERNet	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS32787	Akamai Technologies, Inc.	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS3754	NYSERNet	US
AS3356	Level 3 Parent, LLC	US
AS174	Cogent Communications, LLC	US
AS32787	Akamai Technologies, Inc.	US