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 38
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 38 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 ██████████ 11
216.255.101.123 ██████████ 2
216.255.101.237 ██████████ 2
216.255.101.82 ██████████ 1
216.255.101.174 ██████████ 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 Optimum WiFi
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Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS32787 Akamai Technologies, Inc.
AS46887 Crown Castle Fiber LLC
AS54004 Optimum WiFi
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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
216.255.101.27 AS21821 Montefiore Medical Center 2.62ms from Newark, US
144.121.102.7 AS21821 Montefiore Medical Center 2.18ms from Newark, US
216.255.100.21 AS21821 Montefiore Medical Center 2.05ms 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
23.221.243.189 AS16625 Akamai Technologies, Inc. 0.17ms from Ashburn, US
207.239.136.189 AS2828 Verizon Business 4.88ms from Ashburn, US
138.43.148.77 AS395437 Highland Communications LLC 8.93ms from Atlanta, US
67.177.72.45 AS7922 Comcast Cable Communications, LLC 10.67ms from Atlanta, US
158.108.92.253 AS9411 Kasetsart University, Thailand 0.99ms from Bangkok, TH
73.126.29.93 AS7922 Comcast Cable Communications, LLC 7.04ms from Boston, US
41.232.45.93 AS8452 TE-AS 4.31ms from Cairo, EG
45.22.255.29 AS7018 AT&T Enterprises, LLC 10.43ms from Chicago, US
108.130.89.29 AS16509 Amazon.com, Inc. 0.44ms from Dublin, IE
6.6.20.189 AS668 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
77.93.239.157 AS5602 Retelit Digital Services S.p.A. 0.58ms from Milan, IT
98.113.113.157 AS701 Verizon Business 2.72ms from New York City, US
3.81.163.29 AS14618 Amazon.com, Inc. 0.59ms from Reston, US
200.211.158.77 AS4230 CLARO S.A. 6.28ms from Sao Paulo, BR
97.87.157.45 AS20115 Charter Communications LLC 5.53ms from St. Louis, US
171.40.220.125 AS4134 CHINANET-BACKBONE 3.88ms from Wuhan, CN
94.190.6.141 AS48524 INTERRA telecommunications group, Ltd. 1.27ms from Yekaterinburg, RU
118.82.220.61 AS55872 BayCity Communications Limited 19.11ms from Auckland, NZ
115.183.73.205 AS4808 China Unicom Beijing Province Network 4.88ms from Beijing, CN
15.248.41.157 AS16509 Amazon.com, Inc. 0.51ms from Boardman, US
89.245.12.205 AS8881 1&1 Versatel GmbH 2.42ms from Duesseldorf, DE
218.104.167.237 AS17816 China Unicom IP network China169 Guangdong province 5.08ms from Guangzhou, CN
40.192.1.13 AS16509 Amazon.com, Inc. 1.17ms from Hyderabad, IN
67.203.173.253 AS54483 GeoLinks 1.63ms from Los Angeles, US
69.159.131.157 AS577 Bell Canada 1.80ms from Montreal, CA

Traceroute

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

$
traceroute -a -n -q1 -f7 216.255.100.100
traceroute to 216.255.100.100 (216.255.100.100): 64 hops max, 52 byte packets
7 [AS32787] 23.32.69.177 1.281 ms
9 *
10 [AS21821] 216.255.100.100 41.464 ms
Measurement taken from IPinfo ProbeNet in Dallas, US
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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