1. All IP Ranges
  2. 66.0.0.0/8
  3. 66.128.0.0/16
  4. AS2734  | 66.128.144.0/23

66.128.144.0/23

AS2734  ·  CoreSite

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Summary

Country United States
Domain coresite.com
ASN AS2734
Registry ARIN
ID CORESITE-DIA-66

WHOIS Details

NetHandle:      NET-66-128-144-0-1
OrgID:          COWIL
Parent:         NET-66-0-0-0-0
NetName:        CORESITE-DIA-66
NetRange:       66.128.144.0 - 66.128.159.255
NetType:        allocation
RegDate:        2004-02-26
Updated:        2014-01-09
Source:         ARIN


OrgID:          COWIL
OrgName:        CoreSite
CanAllocate:    
Street:         1001 17th St
Street:         Suite 500
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2005-01-14
Updated:        2025-04-09
OrgAdminHandle: JFA116-ARIN
OrgTechHandle:  CMM8-ARIN
OrgTechHandle:  JENSE37-ARIN
OrgTechHandle:  JFA116-ARIN
OrgTechHandle:  REEDC55-ARIN
OrgTechHandle:  STANL503-ARIN
OrgAbuseHandle: CORES5-ARIN
OrgNOCHandle:   CORES4-ARIN
Source:         ARIN


POCHandle:      REEDC55-ARIN
IsRole:         N
LastName:       Reed
FirstName:      Christopher
Street:         1001 17th Street, Suite 500
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2018-11-16
Updated:        2025-10-30
OfficePhone:    +1-213-327-1203
Mailbox:        chris.reed@coresite.com
Source:         ARIN


POCHandle:      STANL503-ARIN
IsRole:         N
LastName:       Stanley
FirstName:      Michael
Street:         12369 Sunrise Valley Drive
City:           Reston
State/Prov:     VA
Country:        US
PostalCode:     20191
RegDate:        2021-12-30
Updated:        2025-04-08
OfficePhone:    +1-202-827-7002
Mailbox:        michael.stanley@coresite.com
Source:         ARIN


POCHandle:      CMM8-ARIN
IsRole:         N
LastName:       Malayter
FirstName:      Christopher
Street:         1001 17th St
Street:         Suite 500
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2007-06-04
Updated:        2025-10-30
OfficePhone:    +1-608-301-5180
Mailbox:        chris.malayter@coresite.com
Source:         ARIN


POCHandle:      JFA116-ARIN
IsRole:         N
LastName:       Favis
FirstName:      Jerome
Street:         624 S Grand Avenue
Street:         Suite Suite 110
City:           Los Angeles
State/Prov:     CA
Country:        US
PostalCode:     90017
RegDate:        2009-03-11
Updated:        2024-04-03
OfficePhone:    +1-213-327-1208
MobilePhone:    +1-213-216-1155
Mailbox:        jerome.favis@coresite.com
Source:         ARIN


POCHandle:      CORES5-ARIN
IsRole:         Y
LastName:       CoreSite Abuse
FirstName:      
Street:         1001 17th Street, Suite 500
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2018-08-29
Updated:        2025-10-24
OfficePhone:    +1-866-777-2673
Mailbox:        abuse@coresite.com
Source:         ARIN


POCHandle:      CORES4-ARIN
IsRole:         Y
LastName:       Coresite OSC
FirstName:      
Street:         1001 17th Street, Suite 500
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2018-08-29
Updated:        2025-11-25
OfficePhone:    +1-866-777-2673
Mailbox:        osc@coresite.com
Source:         ARIN


POCHandle:      JENSE37-ARIN
IsRole:         N
LastName:       Jensen
FirstName:      John
Street:         12369 Sunrise Valley Drive
City:           Reston
State/Prov:     VA
Country:        US
PostalCode:     20191
RegDate:        2013-02-19
Updated:        2025-01-11
OfficePhone:    +1-571-612-7142
Mailbox:        john.jensen@coresite.com
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 66.128.0.0/16

Range ASN Company Num of IPs
66.128.96.0/19 AS20115 Charter Communications LLC 8,192
66.128.160.0/19 AS13576 SDN Communications Inc. 8,192
66.128.48.0/20 AS7819 Global IP Networks INC 4,096
66.128.80.0/20 AS22995 Xplore Inc. 4,096
66.128.32.0/20 AS263236 Itelsa 4,096
66.128.0.0/20 AS30666 Xchange Telecom Corp. 4,096
66.128.208.0/20 AS32022 Children's Hospital Colorado 4,096
66.128.224.0/20 AS3561 CenturyLink Communications, LLC 4,096
66.128.64.0/20 AS3561 CenturyLink Communications, LLC 4,096
66.128.240.0/20 AS40237 United Telephone Company 4,096
66.128.128.0/20 AS54665 Trailwave Fiber, Inc. 4,096
66.128.164.0/23 AS15204 ITC Telecom 512
66.128.184.0/23 AS15204 ITC Telecom 512
66.128.166.0/23 AS13576 Midstate communications 512
66.128.162.0/23 AS15204 ITC Telecom 512
66.128.171.0/24 AS13576 Valley Telecommunications 256
66.128.181.0/24 AS46566 CAPITAL SERVICES 256
66.128.189.0/24 AS395037 MNL-8 256
66.128.178.0/24 AS398112 Poet 256
66.128.177.0/24 AS398176 JDS Industries 256
66.128.182.0/24 AS15204 ITC Telecom 256
66.128.173.0/24 AS13576 Valley Telephone Company 256
66.128.174.0/24 AS13576 B-Y Internet, LLC 256
66.128.175.0/24 AS13576 Midstate communications 256
66.128.176.0/24 AS13576 COMMUNITY INTERNET SERVICE 256
66.128.179.0/24 AS13576 SDN-BCKB 256
66.128.183.0/24 AS15204 ITC Telecom 256
66.128.188.0/24 AS14675 PLAINS COMMERCE BANK 256
66.128.161.0/24 AS18785 Santel Communications Cooperative, Inc. 256

Hosted domains

There are 5 domain names hosted across 4 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
66.128.145.166 ufehp.com 2
66.128.145.167 unifinemail.com 1
66.128.145.165 uoffer.ai 1
66.128.145.85 ccsins.com 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
66.128.145.196 AS2734 CoreSite 0.21ms from Chicago, US
66.128.144.29 AS2734 CoreSite 0.22ms from Chicago, 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
139.208.145.119 AS4837 CHINA UNICOM China169 Backbone 10.31ms from Changchun, CN
18.117.133.103 AS16509 Amazon.com, Inc. 0.71ms from Columbus, US
164.92.191.119 AS14061 DigitalOcean, LLC 0.22ms from Frankfurt am Main, DE
119.229.176.247 AS17511 OPTAGE Inc. 1.68ms from Osaka, JP
20.245.43.103 AS8075 Microsoft Corporation 0.56ms from San Jose, US
209.42.121.119 AS32638 Trent University 3.71ms from Toronto, CA
75.249.242.135 AS6167 Verizon Business 12.85ms from Washington, US
85.0.71.215 AS3303 Swisscom (Switzerland) Ltd 0.85ms from Zuerich, CH
142.190.176.183 AS13760 Uniti Fiber Holdings Inc. 6.04ms from Atlanta, US
198.35.75.23 AS395228 Adient US LLC 2.97ms from Atlanta, US
109.131.39.7 AS5432 Proximus NV 2.35ms from Brussels, BE
181.3.74.103 AS7303 Telecom Argentina S.A. 11.75ms from Buenos Aires, AR
14.175.163.199 AS45899 VNPT Corp 4.76ms from Da Nang, VN
23.122.196.215 AS7018 AT&T Enterprises, LLC 2.17ms from Dallas, US
52.212.89.103 AS16509 Amazon.com, Inc. 0.17ms from Dublin, IE
79.216.218.103 AS3320 Deutsche Telekom AG 4.06ms from Duesseldorf, DE
98.42.242.119 AS7922 Comcast Cable Communications, LLC 6.76ms from Fremont, US
81.78.177.135 AS5378 Vodafone Limited 5.20ms from London, GB
86.253.80.87 AS3215 Orange S.A. 14.52ms from Paris, FR
93.177.237.119 AS20910 SIA "BITE Latvija" 0.39ms from Riga, LV
191.185.192.183 AS28573 Claro NXT Telecomunicacoes Ltda 12.85ms from Rio de Janeiro, BR
108.35.229.39 AS701 Verizon Business 1.81ms from Secaucus, US
121.133.126.71 AS4766 Korea Telecom 1.92ms from Seoul, KR
183.184.10.39 AS4837 CHINA UNICOM China169 Backbone 2.80ms from Taiyuan, CN
219.165.148.119 AS4713 NTT DOCOMO BUSINESS,Inc. 17.37ms from Tokyo, JP

Traceroute

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

$
traceroute -a -n -q1 -f3 66.128.144.65
traceroute to 66.128.144.65 (66.128.144.65): 64 hops max, 52 byte packets
4 *
5 *
Measurement taken from IPinfo ProbeNet in Chicago, US
On

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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