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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Pingable IPs

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

IP Address	ASN	Details
216.255.100.12	AS21821 Montefiore Medical Center	`1.99ms` 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
37.74.153.136	AS1136 KPN B.V.	`2.49ms` from Amsterdam, NL
45.83.45.232	AS208829 MELLON TECHNOLOGIES SA	`6.85ms` from Athens, GR
41.34.85.120	AS8452 TE-AS	`7.48ms` from Cairo, EG
50.44.45.56	AS5650 Frontier Communications of America, Inc.	`4.80ms` from Chicago, US
149.20.195.136	AS13150 CATO NETWORKS LTD	`0.11ms` from Dallas, US
124.90.50.136	AS4837 CHINA UNICOM China169 Backbone	`4.85ms` from Hangzhou, CN
67.210.116.232	AS9009 M247 Europe SRL	`0.09ms` from Miami, US
97.107.131.120	AS63949 Akamai Connected Cloud	`0.10ms` from Morris Plains, US
34.93.178.200	AS396982 Google LLC	`0.08ms` from Mumbai, IN
91.18.37.184	AS3320 Deutsche Telekom AG	`6.05ms` from Nuernberg, DE
58.191.156.120	AS17511 OPTAGE Inc.	`3.32ms` from Osaka, JP
90.107.16.72	AS3215 Orange S.A.	`9.67ms` from Paris, FR
3.88.106.8	AS14618 Amazon.com, Inc.	`0.48ms` from Reston, US
116.89.102.88	AS55430 Starhub Ltd	`2.51ms` from Singapore, SG
189.248.35.248	AS8151 UNINET	`7.96ms` from Tucson, US
69.13.62.216	AS54489 CoreSpace, Inc.	`0.81ms` from Dallas, US
73.56.74.232	AS7922 Comcast Cable Communications, LLC	`3.96ms` from Miami, US
187.74.105.24	AS27699 TELEFÔNICA BRASIL S.A	`1.82ms` from Sao Paulo, BR
14.45.139.232	AS4766 Korea Telecom	`6.22ms` from Seoul, KR
36.232.202.120	AS3462 Data Communication Business Group	`2.89ms` from Taichung, TW
104.19.157.120	AS13335 Cloudflare, Inc.	`0.11ms` from Wrocław, PL
151.207.235.232	AS5744 United States Patent and Trademark Office	`3.08ms` from Ashburn, US
69.254.163.184	AS7922 Comcast Cable Communications, LLC	`9.70ms` from Atlanta, US
85.211.251.248	AS8075 Microsoft Corporation	`0.23ms` from Kuala Lumpur, MY
86.247.109.88	AS3215 Orange S.A.	`1.66ms` 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 216.255.100.21

traceroute to 216.255.100.21 (216.255.100.21): 64 hops max, 52 byte packets

3 [AS7195] 200.25.51.211 58.028 ms

4 [AS9304] 198.32.243.207 58.797 ms

5 [AS32787] 2.21.112.97 58.602 ms

6 [AS32787] 114.141.79.104 76.947 ms

7 [AS21821] 216.255.100.21 77.367 ms

Measurement taken from

IPinfo ProbeNet in Quito, EC

On January 19th 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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