129.19.3.0/24

AS12145 · Colorado State University

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Summary

Country	United States
Domain	colostate.edu
ASN	AS12145
Parent Range	129.19.0.0/18
Registry	ARIN
ID	CSU-FRGP-19

WHOIS Details

NetHandle:      NET-129-19-0-0-2
OrgID:          CSU-2
Parent:         NET-129-19-0-0-1
NetName:        CSU-FRGP-19
NetRange:       129.19.0.0 - 129.19.63.255
NetType:        reallocation
OriginAS:       12145
RegDate:        2019-01-15
Updated:        2019-01-15
Source:         ARIN


OrgID:          CSU-2
OrgName:        Colorado State University
CanAllocate:    
Street:         Academic Computing and Networking Services
Street:         Colorado State University
Street:         1018 Campus Delivery
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80523
RegDate:        1970-01-01
Updated:        2024-11-25
OrgAdminHandle: SSJ11-ARIN
OrgTechHandle:  DNSAD191-ARIN
OrgAbuseHandle: DNSAD191-ARIN
Source:         ARIN


POCHandle:      SSJ11-ARIN
IsRole:         N
LastName:       Juarez
FirstName:      Steve
Street:         601 S Howes St
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80521
RegDate:        2024-02-07
Updated:        2024-02-07
OfficePhone:    +1-970-491-4150
MobilePhone:    +1-970-443-3520
Mailbox:        steve.juarez@colostate.edu
Source:         ARIN


POCHandle:      DNSAD191-ARIN
IsRole:         Y
LastName:       DNS Administrator
FirstName:      
Street:         Academic Computing and Networking Services
Street:         Colorado State University
City:           Fort Collins
State/Prov:     CO
Country:        US
PostalCode:     80523
RegDate:        2007-03-07
Updated:        2025-06-12
OfficePhone:    +1-970-491-5600
FaxPhone:       +1-970-491-1958
Mailbox:        dns.admin@colostate.edu
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 129.19.3.0/24

Range	ASN	Company	Num of IPs
129.19.0.0/18	AS12145	Colorado State University	16,384
129.19.0.0/18	AS31991	Colorado State University	16,384
129.19.0.0/16	AS14041	Colorado State University	65,536

Hosted domains

There are no domains currently hosted on this ASN.

Hosted domains API

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Useful for Cybersecurity

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Pingable IPs

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

IP Address	ASN	Details
129.19.3.5	AS12145 Colorado State University	`3.25ms` 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
34.18.46.72	AS396982 Google LLC	`0.43ms` from Az Za`ayin, QA
69.73.253.40	AS14813 Columbus Telecommunications (Barbados) Limited	`3.17ms` from Bridgetown, BB
174.106.173.152	AS11426 Charter Communications Inc	`15.71ms` from Charlotte, US
115.197.142.56	AS4134 CHINANET-BACKBONE	`6.09ms` from Hangzhou, CN
92.28.109.56	AS13285 TalkTalk Communications Limited	`3.52ms` from London, GB
75.50.190.200	AS7018 AT&T Enterprises, LLC	`9.81ms` from Los Angeles, US
75.21.36.168	AS7018 AT&T Enterprises, LLC	`2.21ms` from Los Angeles, US
201.127.169.88	AS8151 UNINET	`10.96ms` from Phoenix, US
52.201.73.184	AS14618 Amazon.com, Inc.	`0.15ms` from Reston, US
220.70.163.72	AS4766 Korea Telecom	`3.15ms` from Seoul, KR
34.2.157.232	AS15169 Google LLC	`0.14ms` from Singapore, SG
217.215.198.40	AS3301 Telia Company AB	`5.63ms` from Stockholm, SE
1.41.205.168	AS4804 Microplex PTY LTD	`2.23ms` from Sydney, AU
115.162.195.248	AS2527 Sony Network Communications Inc.	`1.68ms` from Tokyo, JP
50.101.183.56	AS577 Bell Canada	`1.37ms` from Toronto, CA
172.102.199.72	AS46261 QuickPacket, LLC	`0.18ms` from Ashburn, US
204.242.215.24	AS6079 RCN	`1.57ms` from Ashburn, US
64.185.3.88	AS13693 Vexus Fiber	`3.90ms` from Dallas, US
27.42.154.72	AS17816 China Unicom IP network China169 Guangdong province	`4.47ms` from Guangzhou, CN
66.75.99.40	AS20001 Charter Communications Inc	`5.70ms` from Honolulu, US
182.246.6.136	AS4134 CHINANET-BACKBONE	`5.74ms` from Kunming, CN
175.163.240.232	AS4837 CHINA UNICOM China169 Backbone	`8.41ms` from Liaoyang, CN
74.210.235.136	AS11290 Cogeco Connexion inc	`8.04ms` from Montreal, CA
67.249.253.136	AS11351 Charter Communications Inc	`18.62ms` from New York City, US
37.194.140.24	AS31200 Novotelecom Ltd	`1.55ms` from Novosibirsk, RU

Traceroute

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

traceroute -a -n -q1 -f3 129.19.3.249

traceroute to 129.19.3.249 (129.19.3.249): 64 hops max, 52 byte packets

3 [] 206.53.175.22 0.577 ms

4 [AS14041] 192.43.217.170 0.442 ms

5 [AS12145] 129.82.2.25 2.635 ms

6 [AS12145] 129.19.1.67 3.453 ms

7 [AS12145] 129.19.3.249 3.349 ms

Measurement taken from

IPinfo ProbeNet in Denver, US

On September 4th 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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