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:      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


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:        2026-04-03
OfficePhone:    +1-213-327-1208
MobilePhone:    +1-213-216-1155
Mailbox:        jerome.favis@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:      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:      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:      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:      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

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 8,192
66.128.48.0/20 AS7819 Global IP Networks INC 4,096
66.128.208.0/20 AS32022 Children's Hospital Colorado 4,096
66.128.64.0/20 AS3561 CenturyLink Communications, LLC 4,096
66.128.224.0/20 AS3561 CenturyLink Communications, LLC 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
66.128.240.0/20 AS40237 United Telephone Company 4,096
66.128.128.0/20 AS54665 Trailwave Fiber, Inc. 4,096
66.128.162.0/23 AS15204 ITC Telecom 512
66.128.166.0/23 AS13576 Midstate communications 512
66.128.164.0/23 AS15204 ITC Telecom 512
66.128.184.0/23 AS15204 ITC Telecom 512
66.128.161.0/24 AS18785 Santel Communications Cooperative, Inc. 256
66.128.176.0/24 AS13576 COMMUNITY INTERNET SERVICE 256
66.128.173.0/24 AS13576 Valley Telephone Company 256
66.128.179.0/24 AS13576 SDN-BCKB 256
66.128.175.0/24 AS13576 Midstate communications 256
66.128.174.0/24 AS13576 B-Y Internet, LLC 256
66.128.188.0/24 AS14675 PLAINS COMMERCE BANK 256
66.128.183.0/24 AS15204 ITC Telecom 256
66.128.182.0/24 AS15204 ITC Telecom 256
66.128.171.0/24 AS13576 Valley Telecommunications 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
66.128.181.0/24 AS46566 CAPITAL SERVICES 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
66.128.145.165 smsunifin.com 3
66.128.145.166 smsunifin.com 3
66.128.145.167 unifinemail.com 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

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

IP Address ASN Details
66.128.145.164 AS2734 CoreSite 0.26ms from Chicago, US
66.128.144.37 AS2734 CoreSite 0.26ms 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
190.249.243.39 AS13489 UNE EPM TELECOMUNICACIONES S.A. 4.99ms from Bogota, CO
72.249.170.215 AS55045 TekTonic 0.68ms from Dallas, US
1.53.238.199 AS18403 FPT Telecom Company 9.70ms from Hanoi, VN
117.57.163.199 AS4134 CHINANET BACKBONE 10.78ms from Huainan, CN
99.163.19.135 AS7018 AT&T Enterprises, LLC 4.72ms from Kansas City, US
186.53.102.55 AS6057 Administracion Nacional de Telecomunicaciones 1.79ms from Montevideo, UY
84.131.196.215 AS3320 Deutsche Telekom AG 3.81ms from Munich, DE
118.105.230.103 AS18126 Chubu Telecommunications Company, Inc. 3.89ms from Osaka, JP
149.174.12.231 AS272096 PACKETHUB S.A. 0.31ms from Seattle, US
164.132.224.231 AS16276 OVH SAS 0.10ms from Strasbourg, FR
1.163.47.135 AS3462 Data Communication Business Group 1.88ms from Taipei, TW
113.234.237.247 AS4837 CHINA UNICOM China169 Backbone 9.13ms from Tieling, CN
150.249.159.183 AS2527 Sony Network Communications Inc. 1.36ms from Tokyo, JP
92.96.181.87 AS5384 Emirates Internet 3.67ms from Al Fujairah City, AE
178.142.4.167 AS9145 EWE TEL GmbH 7.15ms from Amsterdam, NL
23.226.213.119 AS396319 Oxylabs 0.40ms from Ashburn, US
121.69.104.7 AS4808 China Unicom Beijing Province Network 4.41ms from Beijing, CN
51.178.110.167 AS16276 OVH SAS 0.05ms from Gravelines, FR
86.141.158.151 AS2856 British Telecommunications PLC 12.41ms from London, GB
59.95.117.135 AS9829 National Internet Backbone 14.56ms from Mumbai, IN
172.94.118.7 AS132372 GB Network Solutions Sdn. Bhd. 0.41ms from New York City, US
69.142.225.135 AS7922 Comcast Cable Communications, LLC 7.75ms from New York City, US
77.38.178.183 AS20910 SIA BITE Latvija 0.45ms from Riga, LV
188.95.231.87 AS42695 Cleura AB 9.06ms from Stockholm, SE
95.104.1.231 AS16010 Magticom Ltd. 0.66ms from Tbilisi, GE

Traceroute

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

$
traceroute -a -n -q1 -f3 66.128.144.163
traceroute to 66.128.144.163 (66.128.144.163): 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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