1. All IP Ranges
  2. 129.0.0.0/8
  3. 129.19.0.0/16
  4. AS12145  | 129.19.0.0/18

129.19.0.0/18

AS12145  ·  Colorado State University

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Summary

Country United States
Domain colostate.edu
ASN AS12145
Parent Range 129.19.0.0/16
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
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:      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


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:        2026-02-06
OfficePhone:    +1-970-491-4150
MobilePhone:    +1-970-443-3520
Mailbox:        steve.juarez@colostate.edu
Source:         ARIN

Overlapping Ranges

BGP prefixes that contain 129.19.0.0/18

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

Nearby Ranges

BGP prefixes that overlap with 129.19.0.0/16

Range ASN Company Num of IPs
129.19.0.0/16 AS14041 Colorado State University 65,536
129.19.192.0/18 AS104 University of Colorado Boulder 16,384
129.19.176.0/20 AS393869 COLORADO MOUNTAIN COLLEGE 4,096
129.19.128.0/20 AS54393 Fort Lewis College 4,096
129.19.92.0/23 AS14041 The Auraria Higher Education Center 512
129.19.144.0/24 AS393657 Colorado Mesa University 256
129.19.174.0/24 AS396212 Aims Community College 256
129.19.154.0/24 AS401317 Boulder Public Library District 256
129.19.163.0/24 AS65 Air Force Systems Networking 256
129.19.148.0/24 AS14041 NEON, Inc. 256
129.19.149.0/24 AS14041 NEON, Inc. 256
129.19.153.0/24 AS14041 WICHE 256
129.19.165.0/24 AS14041 National Center for Atmospheric Research 256
129.19.151.0/24 AS30136 Adams 12 256
129.19.152.0/24 AS30136 Adams 12 256

Hosted domains

There is 1 domain name hosted across 1 IP address on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
129.19.4.13 onegreatcountytoplay.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

4,142 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
129.19.46.55 AS12145 Colorado State University 2.45ms from Denver, US
129.19.38.5 AS12145 Colorado State University 2.45ms from Denver, US
129.19.6.1 AS31991 Platte River Power Authority 3.06ms from Denver, US
129.19.45.155 AS12145 Colorado State University 2.45ms from Denver, US
129.19.1.11 AS12145 Colorado State University 2.59ms from Denver, US
129.19.43.211 AS12145 Colorado State University 2.45ms from Denver, US
129.19.33.111 AS12145 Colorado State University 2.45ms from Denver, US
129.19.37.42 AS12145 Colorado State University 2.45ms from Denver, US
129.19.44.34 AS12145 Colorado State University 2.45ms from Denver, US
129.19.32.158 AS12145 Colorado State University 2.45ms from Denver, US
129.19.3.4 AS12145 Colorado State University 3.26ms from Denver, US
129.19.40.127 AS12145 Colorado State University 2.44ms from Denver, US
129.19.16.1 AS12145 Colorado State University 2.95ms from Denver, US
129.19.42.41 AS12145 Colorado State University 2.45ms from Denver, US
129.19.35.241 AS12145 Colorado State University 2.45ms from Denver, US
129.19.47.27 AS12145 Colorado State University 2.45ms from Denver, US
129.19.34.89 AS12145 Colorado State University 2.44ms from Denver, US
129.19.36.169 AS12145 Colorado State University 2.45ms from Denver, US
129.19.39.152 AS12145 Colorado State University 2.45ms from Denver, US
129.19.41.168 AS12145 Colorado State University 2.45ms from Denver, US
129.19.60.31 AS12145 Colorado State University 2.45ms from Denver, US
129.19.61.230 AS12145 Colorado State University 2.45ms from Denver, US
129.19.55.98 AS12145 Colorado State University 2.45ms from Denver, US
129.19.59.59 AS12145 Colorado State University 2.45ms from Denver, US
129.19.51.13 AS12145 Colorado State University 2.45ms 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
95.56.80.50 AS9198 JSC Kazakhtelecom 2.16ms from Almaty, KZ
172.214.196.34 AS8075 Microsoft Corporation 0.44ms from Chicago, US
41.83.120.2 AS8346 SONATEL-AS Autonomous System 1.32ms from Dakar, SN
52.31.231.82 AS16509 Amazon.com, Inc. 0.19ms from Dublin, IE
52.30.18.146 AS16509 Amazon.com, Inc. 0.13ms from Dublin, IE
109.145.143.194 AS2856 British Telecommunications PLC 4.78ms from Erith, GB
112.67.183.114 AS4134 CHINANET-BACKBONE 1.19ms from Haikou, CN
116.99.159.242 AS24086 Viettel Corporation 1.62ms from Ho Chi Minh City, VN
117.67.81.146 AS4134 CHINANET-BACKBONE 10.72ms from Huai'an, CN
105.25.195.66 AS37100 SEACOM Limited 1.89ms from Johannesburg, ZA
87.89.138.242 AS5410 Bouygues Telecom SA 2.67ms from Lyon, FR
71.196.112.2 AS7922 Comcast Cable Communications, LLC 7.54ms from Miami, US
207.157.12.130 AS3464 Alabama Supercomputer Authority 6.24ms from Nashville, US
93.228.128.2 AS3320 Deutsche Telekom AG 5.91ms from Nuernberg, DE
3.234.113.66 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
76.233.30.82 AS7018 AT&T Enterprises, LLC 3.99ms from San Antonio, US
12.139.78.2 AS7018 AT&T Enterprises, LLC 3.39ms from San Jose, US
191.236.83.66 AS8075 Microsoft Corporation 1.26ms from San Jose, US
12.63.237.34 AS7018 AT&T Enterprises, LLC 0.74ms from Secaucus, US
47.106.156.162 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.46ms from Shenzhen, CN
222.227.146.66 AS2516 KDDI CORPORATION 0.83ms from Tokyo, JP
201.127.88.50 AS8151 UNINET 7.80ms from Tucson, US
89.68.67.242 AS9141 P4 Sp. z o.o. 12.76ms from Warsaw, PL
97.75.159.210 AS22709 North State Telephone, LLC 0.31ms from Atlanta, US
124.207.177.18 AS4808 China Unicom Beijing Province Network 3.93ms from Beijing, CN

Traceroute

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

$
traceroute -a -n -q1 -m6 129.19.15.170
traceroute to 129.19.15.170 (129.19.15.170): 6 hops max, 52 byte packets
2 *
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Cayenne, GF
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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