204.228.80.0/24

AS104 · University of Colorado at Boulder

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Summary

Country	United States
Domain	colorado.edu
ASN	AS104
Parent Range	204.228.64.0/18
Registry	ARIN
ID	CU-MISC

WHOIS Details

NetHandle:      NET-204-228-80-0-1
OrgID:          UCB-2-Z
Parent:         NET-204-0-0-0-0
NetName:        CU-MISC
NetRange:       204.228.80.0 - 204.228.80.255
NetType:        allocation
OriginAS:       104
RegDate:        1995-01-12
Updated:        2021-12-14
Source:         ARIN


OrgID:          UCB-2-Z
OrgName:        University of Colorado Boulder
CanAllocate:    
Street:         Office of Information Technology 
Street:         3645 Marine Street
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80309-0455
RegDate:        2019-05-13
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

Overlapping Ranges

BGP prefixes that contain 204.228.80.0/24

Range	ASN	Company	Num of IPs
204.228.64.0/18	AS209	Adams 12	16,384

Nearby Ranges

BGP prefixes that overlap with 204.228.0.0/16

Range	ASN	Company	Num of IPs
204.228.64.0/18	AS209	Adams 12	16,384
204.228.96.0/19	AS30136	Adams 12	8,192
204.228.128.0/19	AS6315	XMission, L.C.	8,192
204.228.68.0/22	AS62671	ECS-Infrastructure	1,024
204.228.198.0/23	AS40266	SpeedyQuick Networks Inc	512
204.228.226.0/24	AS40266	SpeedyQuick Networks Inc	256
204.228.64.0/24	AS32920	ITHAKA Harbors, Inc.	256
204.228.176.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.189.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.180.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.84.0/24	AS17207	Colorado College	256
204.228.187.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.178.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.177.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.199.0/24	AS40266	SpeedyQuick Networks Inc	256
204.228.190.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.81.0/24	AS33652	County of Grand, East Grand School District #2	256
204.228.185.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.191.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.198.0/24	AS40266	SpeedyQuick Networks Inc	256
204.228.179.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.183.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.87.0/24	AS17207	Colorado College	256
204.228.23.0/24	AS22773	The University of Arizona	256
204.228.184.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.86.0/24	AS17207	Colorado College	256
204.228.181.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.175.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.188.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.85.0/24	AS17207	Colorado College	256
204.228.186.0/24	AS3477	National Weather Service Western Region Headquarters	256
204.228.182.0/24	AS3477	National Weather Service Western Region Headquarters	256

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

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
201.2.130.8	AS8167 V tal	10.22ms from Curitiba, BR
223.122.235.56	AS137872 China Mobile Hong Kong Company Limited	1.74ms from Hong Kong, HK
119.123.59.40	AS4134 CHINANET-BACKBONE	2.51ms from Shenzhen, CN
23.249.79.120	AS395846 Direct Communications Rockland, Inc	5.70ms from Draper, US
210.245.12.24	AS18403 FPT Telecom Company	0.42ms from Hanoi, VN
51.143.215.72	AS8075 Microsoft Corporation	0.21ms from London, GB
54.205.0.232	AS14618 Amazon.com, Inc.	0.22ms from Reston, US
185.26.62.8	AS204575 TECHCOLLEGE S/I	3.84ms from Skanderborg, DK
186.0.49.56	AS13489 UNE EPM TELECOMUNICACIONES S.A.	18.50ms from Medellin, CO
35.182.96.88	AS16509 Amazon.com, Inc.	0.16ms from Montreal, CA
133.130.216.72	AS2514 NTT PC Communications, Inc.	2.06ms from Osaka, JP
119.167.162.88	AS4837 CHINA UNICOM China169 Backbone	0.38ms from Qingdao, CN
89.190.237.40	AS12389 PJSC Rostelecom	9.89ms from Stockholm, SE
202.221.248.200	AS2497 Internet Initiative Japan Inc.	2.72ms from Tokyo, JP
34.10.15.232	AS396982 Google LLC	0.12ms from Council Bluffs, US
72.144.31.104	AS8075 Microsoft Corporation	0.18ms from Frankfurt am Main, DE
213.110.151.152	AS47889 SUNNET LLC	0.58ms from Kyiv, UA
75.74.15.72	AS7922 Comcast Cable Communications, LLC	5.92ms from Miami, US
93.109.40.24	AS6866 Cyprus Telecommunications Authority	2.74ms from Nicosia, CY
178.186.2.120	AS12389 PJSC Rostelecom	5.56ms from Novosibirsk, RU
5.189.48.104	AS12668 LLC "KomTehCentr"	0.83ms from Yekaterinburg, RU
81.156.104.40	AS2856 British Telecommunications PLC	4.49ms from London, GB
125.191.138.72	AS17858 LG POWERCOMM	2.17ms from Seoul, KR
192.83.194.152	AS1659 Taiwan Academic Network (TANet) Information Center	4.62ms from Taichung, TW
76.120.47.8	AS7922 Comcast Cable Communications, LLC	8.68ms from Denver, US

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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