216.255.100.0/24

AS21821 · Montefiore Medical Center

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Summary

Country	United States
Domain	montefiore.org
ASN	AS21821
Parent Range	216.255.96.0/19
Registry	ARIN
ID	CVNE-D8FF640

WHOIS Details

NetHandle:      NET-216-255-100-0-1
OrgID:          C00655018
Parent:         NET-216-255-96-0-1
NetName:        CVNE-D8FF640
NetRange:       216.255.100.0 - 216.255.101.255
NetType:        reassignment
RegDate:        2003-08-28
Updated:        2003-08-28
Source:         ARIN


OrgID:          C00655018
OrgName:        Montefiore Medical Center
CanAllocate:    
Street:         100 Corporate Dr
City:           Yonkers
State/Prov:     NY
Country:        US
PostalCode:     10701
RegDate:        2003-08-28
Updated:        2011-03-19
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 216.255.100.0/24

Range	ASN	Company	Num of IPs
216.255.96.0/19	AS6128	Cablevision Systems Corp.	8,192

Nearby Ranges

BGP prefixes that overlap with 216.255.0.0/16

Range	ASN	Company	Num of IPs
216.255.0.0/18	AS7106	Com Net, Inc.	16,384
216.255.192.0/19	AS46595	Penasco Valley Telecommunications	8,192
216.255.96.0/19	AS6128	Cablevision Systems Corp.	8,192
216.255.160.0/20	AS11776	Breezeline	4,096
216.255.240.0/20	AS30444	Ocala Fiber Network	4,096
216.255.224.0/20	AS4694	IDC Frontier Inc.	4,096
216.255.0.0/21	AS394708	Horizon Telcom Inc.	2,048
216.255.34.0/24	AS394708	Horizon Telcom Inc.	256
216.255.43.0/24	AS394708	Horizon Telcom Inc.	256
216.255.51.0/24	AS394708	Horizon Telcom Inc.	256
216.255.62.0/24	AS394708	Horizon Telcom Inc.	256
216.255.103.0/24	AS396130	Publishers Clearing House	256
216.255.21.0/24	AS394708	Horizon Telcom Inc.	256
216.255.177.0/24	AS40714	MGD - Fort Pierce	256
216.255.106.0/24	AS19961	Petro Inc	256
216.255.160.0/24	AS11776	Breezeline	256
216.255.161.0/24	AS11776	Breezeline	256
216.255.176.0/24	AS40714	Media Giant Design LLC	256

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
216.255.100.21	AS21821 Montefiore Medical Center	`2.10ms` 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
31.161.3.200	AS1136 KPN B.V.	`2.51ms` from Amsterdam, NL
92.206.6.136	AS16202 Tele Columbus AG	`9.06ms` from Berlin, DE
51.9.227.8	AS6871 Plusnet	`5.11ms` from Erith, GB
87.182.80.136	AS3320 Deutsche Telekom AG	`3.58ms` from Frankfurt am Main, DE
98.164.3.120	AS22773 Cox Communications Inc.	`12.56ms` from Kansas City, US
90.204.145.56	AS5607 Sky UK Limited	`3.63ms` from London, GB
185.103.81.56	AS34758 Axera SpA	`3.44ms` from Milan, IT
34.148.161.72	AS396982 Google LLC	`0.14ms` from Moncks Corner, US
163.252.135.120	AS13977 Fidium	`3.26ms` from Montreal, CA
185.100.107.8	AS47764 LLC VK	`0.90ms` from Moscow, RU
4.240.189.72	AS8075 Microsoft Corporation	`13.37ms` from Mumbai, IN
203.99.246.72	AS24270 CRC Solutions Corp.,	`2.79ms` from Osaka, JP
91.165.140.24	AS12322 Free SAS	`4.41ms` from Paris, FR
62.101.36.216	AS13189 Lidero Network	`1.43ms` from Stockholm, SE
115.163.53.184	AS2527 Sony Network Communications Inc.	`5.40ms` from Tokyo, JP
125.237.241.232	AS4771 Spark New Zealand Trading Ltd.	`1.70ms` from Auckland, NZ
185.170.155.200	AS16276 OVH SAS	`0.11ms` from Frankfurt am Main, DE
221.211.51.72	AS4837 CHINA UNICOM China169 Backbone	`10.17ms` from Harbin, CN
72.15.169.104	AS11714 Network Nebraska	`2.24ms` from Lincoln, US
68.119.25.88	AS20115 Charter Communications LLC	`7.85ms` from Minneapolis, US
98.61.121.120	AS7922 Comcast Cable Communications, LLC	`9.87ms` from Minneapolis, US
74.42.154.40	AS5650 Frontier Communications of America, Inc.	`9.77ms` from New York City, US
90.189.157.24	AS12389 PJSC Rostelecom	`1.05ms` from Novosibirsk, RU
125.205.113.152	AS4713 NTT DOCOMO BUSINESS,Inc.	`5.12ms` from Osaka, JP
86.247.109.88	AS3215 Orange S.A.	`1.44ms` from Paris, FR

Traceroute

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

traceroute -a -n -q1 -f3 216.255.100.12

traceroute to 216.255.100.12 (216.255.100.12): 64 hops max, 52 byte packets

3 [] 195.66.224.31 4.932 ms

4 [AS32787] 2.21.124.91 4.783 ms

5 [AS32787] 114.141.79.102 78.774 ms

6 [AS21821] 216.255.100.12 75.452 ms

Measurement taken from

IPinfo ProbeNet in Wolverhampton, GB

On January 30th 2026

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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