146.203.128.0/21

AS11452 · Mount Sinai School of Medicine

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Summary

Country	United States
Domain	mssm.edu
ASN	AS11452
Registry	ARIN
ID	MSSMEDU-1

WHOIS Details

NetHandle:      NET-146-203-0-0-1
OrgID:          MSSM
Parent:         NET-146-0-0-0-0
NetName:        MSSMEDU-1
NetRange:       146.203.0.0 - 146.203.255.255
NetType:        allocation
OriginAS:       11452
RegDate:        1991-02-28
Updated:        2021-12-14
TechHandle:     AP412-ARIN
AbuseHandle:    NETWO2964-ARIN
NOCHandle:      NETWO2964-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


POCHandle:      NETWO2964-ARIN
IsRole:         Y
LastName:       Network Operations
FirstName:      
Street:         One Gustave L. Levy Place
Street:         Mailstop #1102
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10029-6574
RegDate:        2009-02-24
Updated:        2018-12-14
OfficePhone:    +1-212-241-7091
Mailbox:        abuse@mssm.edu
Source:         ARIN


POCHandle:      LAWRE33-ARIN
IsRole:         N
LastName:       Lawrence
FirstName:      Paul
Street:         One Gustave L. Levy Place
Street:         MS# 1102
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10029
RegDate:        2013-07-11
Updated:        2022-09-06
OfficePhone:    +1-212-241-7892
FaxPhone:       +1-212-242-4925
Mailbox:        paul.lawrence@mssm.edu
Source:         ARIN


POCHandle:      GUNTH50-ARIN
IsRole:         N
LastName:       Gunther
FirstName:      Doug
Street:         150 East 42nd Street Floor 3
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10017
RegDate:        2023-06-16
Updated:        2024-08-08
OfficePhone:    +1-212-814-4541
MobilePhone:    +1-212-814-4541
Mailbox:        doug.gunther@mountsinai.org
Source:         ARIN


POCHandle:      AP412-ARIN
IsRole:         N
LastName:       Pizzimenti
FirstName:      Andrew
Street:         One Gustave L. Levy Place
Street:         MS# 1102
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10029-6574
RegDate:        1995-11-29
Updated:        2024-08-08
OfficePhone:    +1-212-241-4929
MobilePhone:    +1-917-459-9302
FaxPhone:       +1-212-241-4925
Mailbox:        andrew.pizzimenti@mssm.edu
Source:         ARIN


POCHandle:      CRUZO-ARIN
IsRole:         N
LastName:       Cruz
FirstName:      Orquidia
Street:         Levy Library
Street:         One Gustave L. Levy Place
Street:         MS# 1102
City:           New York
State/Prov:     NY
Country:        US
PostalCode:     10029-6574
RegDate:        2013-07-24
Updated:        2022-09-07
OfficePhone:    +1-212-241-6671
MobilePhone:    +1-646-201-6425
FaxPhone:       +1-212-241-4925
Mailbox:        Orquidia.Cruz@mssm.edu
Source:         ARIN

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Pingable IPs

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
97.140.59.37	AS6167 Verizon Business	`15.44ms` from Atlanta, US
218.207.43.85	AS9808 China Mobile Communications Group Co., Ltd.	`1.63ms` from Chongqing, CN
52.154.204.133	AS8075 Microsoft Corporation	`0.38ms` from Des Moines, US
120.37.192.229	AS4134 CHINANET-BACKBONE	`2.22ms` from Fuzhou, CN
61.18.196.133	AS9908 HK Cable TV Ltd	`2.43ms` from Hong Kong, HK
103.153.38.149	AS140900 Getlinks (SMC-Private) Limited	`12.12ms` from Karachi, PK
121.122.45.85	AS9534 Binariang Berhad	`3.63ms` from Kuala Lumpur, MY
50.57.249.37	AS32244 Liquid Web, L.L.C	`0.20ms` from Lansing, US
86.153.88.21	AS2856 British Telecommunications PLC	`5.87ms` from London, GB
90.250.104.69	AS5378 Vodafone Limited	`11.11ms` from London, GB
82.186.151.69	AS3269 Telecom Italia S.p.A.	`3.69ms` from Milan, IT
89.119.35.165	AS8968 BT Italia S.p.A.	`5.96ms` from Milan, IT
126.54.46.197	AS17676 SoftBank Corp.	`4.09ms` from Osaka, JP
111.67.188.117	AS7524 ITEC HANKYU HANSHIN CO.,LTD.	`1.55ms` from Osaka, JP
49.212.206.181	AS9371 SAKURA Internet Inc.	`0.36ms` from Osaka, JP
34.233.175.101	AS14618 Amazon.com, Inc.	`0.19ms` from Reston, US
65.130.44.149	AS209 CenturyLink Communications, LLC	`2.02ms` from Salt Lake City, US
186.224.187.21	AS28580 Cilnet Comunicação e Informática S.A.	`3.59ms` from Sao Paulo, BR
220.117.253.133	AS4766 Korea Telecom	`1.17ms` from Seoul, KR
183.120.20.165	AS4766 Korea Telecom	`5.70ms` from Seoul, KR
193.9.186.5	AS49362 DSV A/S	`0.54ms` from Singapore, SG
36.238.89.5	AS3462 Data Communication Business Group	`5.96ms` from Taichung, TW
114.26.209.69	AS3462 Data Communication Business Group	`2.74ms` from Taipei, TW
34.105.13.181	AS396982 Google LLC	`0.14ms` from The Dalles, US
102.158.75.213	AS37705 TOPNET	`2.05ms` from Tunis, TN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f4 -m10 146.203.132.124

traceroute to 146.203.132.124 (146.203.132.124): 10 hops max, 52 byte packets

4 [AS8966] 5.195.70.160 11.942 ms

5 *

6 *

7 [AS3356] 4.7.1.202 193.425 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Al Fujairah City, AE

On August 22nd 2025

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

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