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 ██████████ 17
144.121.102.111 ██████████ 15
216.255.101.237 ██████████ 2
216.255.101.123 ██████████ 2
216.255.101.174 ██████████ 1
216.255.101.82 ██████████ 1
216.255.101.135 ██████████ 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
216.255.101.22 AS21821 Montefiore Medical Center 2.76ms from Newark, US
144.121.102.6 AS21821 Montefiore Medical Center 2.26ms from Newark, US
216.255.100.12 AS21821 Montefiore Medical Center 2.12ms 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
73.167.41.45 AS7922 Comcast Cable Communications, LLC 5.95ms from Boston, US
34.76.100.141 AS396982 Google LLC 0.14ms from Brussels, BE
190.137.204.125 AS7303 Telecom Argentina S.A. 1.49ms from Buenos Aires, AR
183.66.23.29 AS4134 CHINANET-BACKBONE 6.10ms from Chongqing, CN
80.145.124.77 AS3320 Deutsche Telekom AG 1.75ms from Duesseldorf, DE
93.232.103.13 AS3320 Deutsche Telekom AG 4.55ms from Duesseldorf, DE
74.116.22.29 AS18615 Mainstream Fiber Networks, LLC 0.92ms from Indianapolis, US
136.0.1.189 AS149440 Evoxt Sdn. Bhd. 0.44ms from London, GB
177.240.218.141 AS13999 Mega Cable, S.A. de C.V. 17.98ms from Los Angeles, US
24.199.27.61 AS20001 Charter Communications Inc 3.15ms from Los Angeles, US
176.156.149.45 AS5410 Bouygues Telecom SA 7.40ms from Marseille, FR
88.50.78.45 AS3269 Telecom Italia S.p.A. 0.84ms from Milan, IT
96.56.74.125 AS6128 Cablevision Systems Corp. 4.17ms from New York City, US
180.12.25.109 AS4713 NTT DOCOMO BUSINESS,Inc. 1.07ms from Osaka, JP
76.105.203.157 AS7922 Comcast Cable Communications, LLC 6.36ms from Portland, US
177.192.84.173 AS28573 Claro NXT Telecomunicacoes Ltda 6.42ms from Rio de Janeiro, BR
176.129.225.61 AS5410 Bouygues Telecom SA 6.15ms from Saint-Denis, FR
4.150.49.13 AS8075 Microsoft Corporation 0.14ms from San Antonio, US
200.245.48.13 AS4230 CLARO S.A. 2.25ms from Sao Paulo, BR
101.88.218.29 AS4812 China Telecom (Group) 2.03ms from Shanghai, CN
99.245.121.141 AS812 Rogers Communications Canada Inc. 3.63ms from Toronto, CA
109.92.140.125 AS8400 TELEKOM SRBIJA a.d. 0.41ms from Belgrade, RS
181.57.156.237 AS14080 Telmex Colombia S.A. 1.22ms from Bogota, CO
103.148.114.61 AS140093 Virtual Communications 2.69ms from Dhaka, BD
90.195.206.125 AS5607 Sky UK Limited 1.91ms from Erith, GB

Traceroute

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

$
traceroute -a -n -q1 -f4 216.255.101.20
traceroute to 216.255.101.20 (216.255.101.20): 64 hops max, 52 byte packets
4 [AS32787] 96.6.147.147 18.113 ms
5 [AS32787] 114.141.79.104 107.645 ms
6 *
7 [AS21821] 216.255.101.20 105.855 ms
Measurement taken from IPinfo ProbeNet in Tirana, AL
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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