Autonomous System details

AS21821

Montefiore Medical Center  ·  montefiore.org

United States

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AS21821 – Montefiore Medical Center

Field Value
Country United States
Website montefiore.org
Hosted domains 39
IPv4 addresses 1,024
IPv6 addresses 0
ASN type Business
Registry arin
Allocated 9 years ago on Apr 03, 2017
Updated 9 years ago on Apr 03, 2017

IP Ranges

Netblock Company Num of IPs
144.121.102.0/24 Montefiore Medicine Academic Health System, Inc. 256
144.121.104.0/24 Montefiore Medicine Academic Health System, Inc. 256
216.255.100.0/24 Montefiore Medical Center 256
216.255.101.0/24 Montefiore Medical Center 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS21821
                                                OrgID:          AS21821
                                                ASName:         AS21821
                                                ASNumber:       AS21821
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 39 domain names hosted across 7 IP addresses on this ASN.

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IP Address Domain Domains on this IP
216.255.101.81 ██████████ 20
144.121.102.111 ██████████ 12
216.255.101.123 ██████████ 2
216.255.101.237 ██████████ 2
216.255.101.135 ██████████ 1
216.255.101.82 ██████████ 1
216.255.101.174 ██████████ 1

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Peers

There are 3 peers for this ASN.

Peers Name
AS32787 Akamai Technologies, Inc.
AS46887 Crown Castle Fiber LLC
AS54004 Cablevision Lightpath LLC
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS32787 Akamai Technologies, Inc.
AS46887 Crown Castle Fiber LLC
AS54004 Cablevision Lightpath LLC
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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

3 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
216.255.100.12 AS21821 Montefiore Medical Center 1.99ms from Newark, US
144.121.102.7 AS21821 Montefiore Medical Center 2.12ms from Newark, US
216.255.101.191 AS21821 Montefiore Medical Center 2.76ms from Newark, US

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
132.232.97.125 AS45090 Shenzhen Tencent Computer Systems Company Limited 0.97ms from Chengdu, CN
136.30.17.13 AS19165 Webpass Inc. 0.43ms from Chicago, US
45.22.255.29 AS7018 AT&T Enterprises, LLC 10.80ms from Chicago, US
68.39.20.109 AS7922 Comcast Cable Communications, LLC 10.11ms from Chicago, US
98.222.217.109 AS7922 Comcast Cable Communications, LLC 11.90ms from Chicago, US
154.54.84.109 AS174 Cogent Communications, LLC 0.65ms from Dallas, US
66.216.77.77 AS33070 Rackspace Hosting 0.88ms from Dallas, US
87.183.81.205 AS3320 Deutsche Telekom AG 5.12ms from Hamburg, DE
221.140.242.93 AS9318 SK Broadband Co Ltd 1.55ms from Incheon, KR
176.156.149.45 AS5410 Bouygues Telecom SA 7.83ms from Marseille, FR
50.149.219.93 AS7922 Comcast Cable Communications, LLC 4.66ms from Miami, US
94.139.250.13 AS210656 Yandex.Cloud LLC 1.28ms from Moscow, RU
83.109.76.13 AS2119 Telenor Norge AS 5.95ms from Oslo, NO
83.108.97.173 AS2119 Telenor Norge AS 3.60ms from Oslo, NO
86.249.128.13 AS3215 Orange S.A. 15.93ms from Paris, FR
184.177.94.141 AS22773 Cox Communications Inc. 0.76ms from Phoenix, US
31.189.7.29 AS24608 WIND TRE S.P.A. 12.75ms from Rome, IT
118.47.0.141 AS4766 Korea Telecom 6.15ms from Seoul, KR
210.104.80.237 AS4766 Korea Telecom 6.96ms from Seoul, KR
210.223.163.205 AS4766 Korea Telecom 6.43ms from Seoul, KR
96.35.216.29 AS20115 Charter Communications LLC 4.09ms from St. Louis, US
187.50.178.61 AS10429 TELEFÔNICA BRASIL S.A 0.94ms from São Paulo, BR
126.150.125.205 AS17676 SoftBank Corp. 2.75ms from Tokyo, JP
133.237.0.61 AS23820 Rakuten Group, Inc. 1.64ms from Tokyo, JP
222.142.170.237 AS4837 CHINA UNICOM China169 Backbone 7.65ms from Zhengzhou, CN

Traceroute

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

$
traceroute -a -n -q1 -f5 -m12 144.121.104.188
traceroute to 144.121.104.188 (144.121.104.188): 12 hops max, 52 byte packets
5 [AS32787] 2.21.126.112 1.512 ms
6 [AS32787] 114.141.79.94 78.872 ms
7 [AS21821] 144.121.102.4 79.386 ms
8 [AS21821] 144.121.102.2 79.058 ms
9 [AS21821] 144.121.102.4 79.265 ms
10 *
11 *
12 *
Measurement taken from IPinfo ProbeNet in Frankfurt am Main, DE
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS21821 at robtex.

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