209.123.121.0/24

AS8001 · Cologix, Inc

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Summary

Country	United States
Domain	cologix.com
ASN	AS8001
Parent Range	209.123.0.0/16
Registry	ARIN
ID	NAC-NETBLK02

WHOIS Details

NetHandle:      NET-209-123-0-0-1
OrgID:          COLOG-8-Z
Parent:         NET-209-0-0-0-0
NetName:        NAC-NETBLK02
NetRange:       209.123.0.0 - 209.123.255.255
NetType:        allocation
RegDate:        1997-08-06
Updated:        2022-03-24
Source:         ARIN


OrgID:          COLOG-8-Z
OrgName:        Cologix, Inc
CanAllocate:    
Street:         1601 19th Street
Street:         Suite 650
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2022-02-03
Updated:        2025-05-07
OrgAdminHandle: BECKJ20-ARIN
OrgTechHandle:  BECKJ20-ARIN
OrgTechHandle:  JOBAY1-ARIN
OrgAbuseHandle: ABUSE5526-ARIN
OrgNOCHandle:   NETWO9665-ARIN
Source:         ARIN


POCHandle:      NETWO9665-ARIN
IsRole:         Y
LastName:       Network Engineering
FirstName:      
Street:         225 E 16th Ave
Street:         Suite 900
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80203
RegDate:        2022-04-14
Updated:        2022-04-14
OfficePhone:    +1-844-449-4357
Mailbox:        noc@cologix.com
Source:         ARIN


POCHandle:      JOBAY1-ARIN
IsRole:         N
LastName:       Jobay
FirstName:      Mike
Street:         200 Webro Rd
City:           Parsippany
State/Prov:     NJ
Country:        US
PostalCode:     07054
RegDate:        2022-01-11
Updated:        2025-09-16
OfficePhone:    +1-973-590-5177
Mailbox:        mike.jobay@cologix.com
Source:         ARIN


POCHandle:      BECKJ20-ARIN
IsRole:         N
LastName:       Beck
FirstName:      Josh
Street:         2580 Interstate Drive
City:           Lakeland
State/Prov:     FL
Country:        US
PostalCode:     33805
RegDate:        2016-03-14
Updated:        2025-12-03
OfficePhone:    +1-855-449-4357
Mailbox:        josh.beck@cologix.com
Source:         ARIN


POCHandle:      ABUSE5526-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         2300 15th Street Suite 300
City:           Denver
State/Prov:     CO
Country:        US
PostalCode:     80202
RegDate:        2016-06-09
Updated:        2022-04-26
OfficePhone:    +1-720-230-7000
Mailbox:        abuse@cologix.com
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 209.123.121.0/24

Range	ASN	Company	Num of IPs
209.123.0.0/16	AS30138	Cologix, Inc	65,536
209.123.0.0/16	AS7868	Cologix, Inc	65,536
209.123.0.0/16	AS8001	Cologix, Inc	65,536

Nearby Ranges

BGP prefixes that overlap with 209.123.0.0/16

Range	ASN	Company	Num of IPs
209.123.0.0/16	AS30138	Cologix, Inc	65,536
209.123.0.0/16	AS7868	Cologix, Inc	65,536
209.123.0.0/16	AS8001	Cologix, Inc	65,536

Hosted domains

There are no domains currently hosted on this ASN.

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

No IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

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
109.128.175.120	AS5432 Proximus NV	`1.87ms` from Brussels, BE
5.103.171.8	AS44869 FIBIA P/S	`2.93ms` from Copenhagen, DK
42.114.62.24	AS18403 FPT Telecom Company	`2.74ms` from Hanoi, VN
77.96.246.8	AS5089 Virgin Media Limited	`6.16ms` from London, GB
213.170.46.168	AS16203 NCG Banco SA	`16.94ms` from Madrid, ES
167.160.114.56	AS55410 Vodafone Idea Ltd	`1.08ms` from Mumbai, IN
3.232.94.8	AS14618 Amazon.com, Inc.	`0.23ms` from Reston, US
222.115.83.232	AS4766 Korea Telecom	`8.26ms` from Seoul, KR
119.198.20.120	AS4766 Korea Telecom	`6.61ms` from Seoul, KR
178.113.78.88	AS25255 ==> TELE2 AUSTRIA <==	`10.34ms` from Vienna, AT
36.46.100.40	AS4134 CHINANET BACKBONE	`3.67ms` from Xi’an, CN
182.125.213.232	AS4837 CHINA UNICOM China169 Backbone	`3.33ms` from Zhengzhou, CN
121.24.94.8	AS4837 CHINA UNICOM China169 Backbone	`9.01ms` from Beijing, CN
3.77.125.152	AS16509 Amazon.com, Inc.	`0.11ms` from Frankfurt am Main, DE
83.253.2.24	AS1257 Tele2 Sverige AB	`10.60ms` from Goeteborg, SE
4.188.40.200	AS8075 Microsoft Corporation	`0.13ms` from Lohogaon, IN
88.10.233.56	AS3352 TELEFONICA DE ESPANA S.A.U.	`8.01ms` from Madrid, ES
79.231.239.8	AS3320 Deutsche Telekom AG	`4.05ms` from Nuernberg, DE
60.151.82.184	AS17676 SoftBank Corp.	`3.38ms` from Osaka, JP
40.124.136.152	AS8075 Microsoft Corporation	`0.15ms` from San Antonio, US
74.76.20.232	AS11351 Charter Communications Inc	`16.91ms` from Secaucus, US
42.6.249.40	AS4837 CHINA UNICOM China169 Backbone	`4.58ms` from Tieling, CN
57.180.204.56	AS16509 Amazon.com, Inc.	`0.16ms` from Tokyo, JP
186.91.55.40	AS8048 CANTV Servicios, Venezuela	`16.63ms` from Willemstad, CW
173.231.245.168	AS54641 InMotion Hosting, Inc.	`0.31ms` from Ashburn, US

Traceroute

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

traceroute -a -n -q1 -m10 209.123.121.60

traceroute to 209.123.121.60 (209.123.121.60): 10 hops max, 52 byte packets

1 [AS197834] 176.32.195.3 0.302 ms

2 [AS8932] 185.48.242.92 0.227 ms

3 [AS3356] 212.133.10.118 28.535 ms

4 *

5 [AS3356] 4.69.209.78 160.319 ms

6 [AS3356] 4.37.152.170 134.687 ms

7 [AS8001] 64.21.118.89 135.047 ms

8 *

9 *

10 *

Measurement taken from

IPinfo ProbeNet in Yerevan, AM

On April 24th 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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