192.12.238.0/24

AS104 · University of Colorado at Boulder

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Summary

Country	United States
Domain	cu.edu
ASN	AS104
Registry	ARIN
ID	CU-BOULDER

WHOIS Details

NetHandle:      NET-192-12-238-0-1
OrgID:          UNIVER-24
Parent:         NET-192-0-0-0-0
NetName:        CU-BOULDER
NetRange:       192.12.238.0 - 192.12.238.255
NetType:        allocation
OriginAS:       104
RegDate:        1986-03-11
Updated:        2021-12-14
TechHandle:     CUBOU-ARIN
AbuseHandle:    ABUSE306-ARIN
Source:         ARIN


OrgID:          UNIVER-24
OrgName:        University of Colorado
CanAllocate:    
Street:         Office of Information Technology
Street:         3645 Marine Street
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80309-0455
RegDate:        1986-03-11
Updated:        2019-06-25
OrgAdminHandle: CUBOU-ARIN
OrgTechHandle:  CUBOU-ARIN
OrgAbuseHandle: ABUSE306-ARIN
Source:         ARIN


POCHandle:      CUBOU-ARIN
IsRole:         Y
LastName:       CUBoulder
FirstName:      
Street:         3645 Marine Street
Street:         Campus Box 455
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80309-0445
RegDate:        2011-11-11
Updated:        2025-07-14
OfficePhone:    +1-303-735-4357
Mailbox:        arinadmin@colorado.edu
Source:         ARIN


POCHandle:      ABUSE306-ARIN
IsRole:         Y
LastName:       Abuse
FirstName:      
Street:         Information Technology Services
Street:         3645 Marine Street
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80309-0455
RegDate:        2003-05-27
Updated:        2025-07-22
OfficePhone:    +1-303-735-4357
Mailbox:        abuse@colorado.edu
Source:         ARIN

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

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Pingable IPs

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

IP Address	ASN	Details
192.12.238.1	AS104 University of Colorado at Boulder	`1.26ms` from Denver, 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
94.65.96.136	AS6799 Ote SA (Hellenic Telecommunications Organisation)	`1.17ms` from Athens, GR
62.11.252.56	AS8070 Microsoft Corporation	`0.65ms` from Boydton, US
186.226.37.72	AS28343 UNIFIQUE TELECOMUNICACOES S/A	`5.78ms` from Chapeco, BR
51.68.71.216	AS16276 OVH SAS	`0.16ms` from Gravelines, FR
170.10.237.104	AS53913 City Wide Communications Inc.	`13.72ms` from Halifax, CA
91.9.220.56	AS3320 Deutsche Telekom AG	`2.24ms` from Hamburg, DE
104.250.32.200	AS137280 Kingsoft cloud corporation limited	`1.32ms` from Hong Kong, HK
208.67.199.72	AS6461 Zayo Bandwidth	`1.98ms` from Kansas City, US
84.67.217.248	AS5378 Vodafone Limited	`5.18ms` from London, GB
108.218.182.88	AS7018 AT&T Enterprises, LLC	`19.32ms` from Los Angeles, US
84.64.126.152	AS5378 Vodafone Limited	`10.71ms` from Manchester, GB
71.195.42.248	AS7922 Comcast Cable Communications, LLC	`5.64ms` from Minneapolis, US
179.28.24.40	AS6057 Administracion Nacional de Telecomunicaciones	`14.26ms` from Montevideo, UY
179.173.208.216	AS26599 TELEFÔNICA BRASIL S.A	`8.49ms` from Osasco, BR
209.30.229.8	AS7018 AT&T Enterprises, LLC	`16.04ms` from San Antonio, US
74.98.220.24	AS701 Verizon Business	`5.96ms` from Ashburn, US
49.228.66.168	AS133481 AIS Fibre	`5.07ms` from Bangkok, TH
20.12.125.104	AS8075 Microsoft Corporation	`0.18ms` from Boydton, US
188.237.16.120	AS8926 Moldtelecom SA	`3.49ms` from Chisinau, MD
122.163.156.200	AS24560 Bharti Airtel Ltd., Telemedia Services	`10.10ms` from Delhi, IN
86.45.129.136	AS5466 Eircom Limited	`5.25ms` from Dublin, IE
23.16.227.200	AS852 TELUS Communications Inc.	`3.45ms` from Kelowna, CA
185.100.173.8	AS6759 Pelion IoT Limited	`1.46ms` from Las Vegas, US
63.205.52.56	AS7018 AT&T Enterprises, LLC	`2.50ms` from Los Angeles, US
116.8.44.248	AS4134 CHINANET-BACKBONE	`0.51ms` from Nanning, CN

Traceroute

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

traceroute -a -n -q1 192.12.238.1

traceroute to 192.12.238.1 (192.12.238.1): 64 hops max, 52 byte packets

1 [AS63023] 69.50.92.1 0.245 ms

2 *

3 [] 206.53.175.22 6.369 ms

4 [AS104] 198.59.55.9 1.472 ms

5 [AS104] 128.138.81.254 1.321 ms

6 [AS104] 198.59.55.118 1.308 ms

7 [AS104] 192.12.244.57 1.347 ms

8 [AS104] 192.12.238.1 1.285 ms

Measurement taken from

IPinfo ProbeNet in Denver, US

On September 11th 2025

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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