192.12.240.0/24

AS104 · University of Colorado at Boulder

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Summary

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

WHOIS Details

NetHandle:      NET-192-12-240-0-1
OrgID:          UNIVER-24
Parent:         NET-192-0-0-0-0
NetName:        CU-ENGINEER
NetRange:       192.12.240.0 - 192.12.240.255
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:      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


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

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

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

IP Address	ASN	Details
192.12.240.33	AS104 University of Colorado at Boulder	`1.32ms` 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
79.81.175.88	AS15557 Societe Francaise Du Radiotelephone - SFR SA	`13.05ms` from Aubervilliers, FR
124.251.74.104	AS9308 Abitcool(China) Inc.	`2.49ms` from Beijing, CN
173.30.34.216	AS30036 Mediacom Communications Corp	`10.38ms` from Chicago, US
47.227.185.184	AS33363 Charter Communications, Inc	`7.37ms` from Chicago, US
8.134.210.56	AS37963 Hangzhou Alibaba Advertising Co.,Ltd.	`0.55ms` from Guangzhou, CN
185.183.20.200	AS43872 Optinet U.K. Limited	`0.17ms` from London, GB
98.232.163.120	AS7922 Comcast Cable Communications, LLC	`5.52ms` from Portland, US
101.44.3.200	AS136907 HUAWEI CLOUDS	`1.00ms` from Santiago, CL
162.220.64.72	AS18919 smartTrade Technologies	`0.19ms` from Secaucus, US
175.227.210.136	AS4766 Korea Telecom	`7.81ms` from Seoul, KR
78.66.59.40	AS3301 Telia Company AB	`0.71ms` from Stockholm, SE
95.172.100.56	AS12714 PJSC MegaFon	`15.44ms` from Yekaterinburg, RU
186.118.226.88	AS3816 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC	`4.27ms` from Bogota, CO
87.97.33.136	AS20845 DIGI Tavkozlesi es Szolgaltato Kft.	`0.70ms` from Budapest, HU
155.190.246.72	AS36692 Cisco OpenDNS, LLC	`0.84ms` from Chennai, IN
20.238.83.232	AS8075 Microsoft Corporation	`0.26ms` from Dublin, IE
172.179.44.8	AS8075 Microsoft Corporation	`0.31ms` from Quincy, US
220.82.202.184	AS4766 Korea Telecom	`5.07ms` from Seoul, KR
72.218.183.120	AS22773 Cox Communications Inc.	`9.03ms` from Ashburn, US
171.226.149.152	AS7552 Viettel Group	`1.97ms` from Ho Chi Minh City, VN
27.225.245.216	AS4134 CHINANET-BACKBONE	`3.99ms` from Lanzhou, CN
176.120.74.88	AS44477 PQ HOSTING PLUS S.R.L.	`0.14ms` from Madrid, ES
210.126.40.232	AS4766 Korea Telecom	`1.43ms` from Seoul, KR
106.111.210.216	AS4134 CHINANET-BACKBONE	`11.41ms` from Shanghai, CN
89.65.161.88	AS9141 P4 Sp. z o.o.	`6.47ms` from Warsaw, PL

Traceroute

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

traceroute -a -n -q1 -f3 192.12.240.33

traceroute to 192.12.240.33 (192.12.240.33): 64 hops max, 52 byte packets

3 [AS3356] 4.69.219.74 135.971 ms

4 [AS3356] 65.59.16.190 136.704 ms

5 [AS104] 198.59.55.118 136.443 ms

6 [AS104] 192.12.240.33 136.177 ms

Measurement taken from

IPinfo ProbeNet in Zagreb, HR

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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