128.138.0.0/16

AS104 · University of Colorado at Boulder

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Summary

Country	United States
Domain	cu.edu
ASN	AS104
Registry	arin
Hosted IPs	65,536
ID	COLORADO

WHOIS Details

NetHandle:      NET-128-138-0-0-1
OrgID:          UNIVER-24
Parent:         NET-128-0-0-0-0
NetName:        COLORADO
NetRange:       128.138.0.0 - 128.138.255.255
NetType:        allocation
OriginAS:       104
RegDate:        1986-07-14
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:        2024-07-09
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:        2024-07-22
OfficePhone:    +1-303-735-4357
Mailbox:        abuse@colorado.edu
Source:         ARIN

Nearby Ranges

BGP prefixes that overlap with 128.0.0.0/8

Range	ASN	Company	Num of IPs
128.68.0.0/14	AS8402	Dynamic IP Pool for Broadband Customers	262,144
128.72.0.0/14	AS8402	Dynamic IP Pool for Broadband Customers	262,144
128.30.0.0/15	AS3	Massachusetts Institute of Technology	131,072
128.130.0.0/15	AS679	Technische Universitaet Wien	131,072
128.78.0.0/15	AS5410	Bouygues Telecom SA	131,072
128.178.0.0/15	AS559	Ecublens Camp Net	131,072
128.119.0.0/16	AS1249	University of Massachusetts - AMHERST	65,536
128.101.0.0/16	AS217	University of Minnesota	65,536
128.248.0.0/16	AS6200	University of Illinois Chicago	65,536
128.155.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.252.0.0/16	AS2552	Washington University	65,536
128.82.0.0/16	AS1201	Old Dominion University	65,536
128.25.0.0/16	AS749	DoD Network Information Center	65,536
128.104.0.0/16	AS59	University of Wisconsin Madison	65,536
128.95.0.0/16	AS73	University of Washington	65,536
128.136.0.0/16	AS13649	Flexential Corp.	65,536
128.171.0.0/16	AS6360	University of Hawaii	65,536
128.208.0.0/16	AS73	University of Washington	65,536
128.177.0.0/16	AS6461	Zayo Bandwidth	65,536
128.122.0.0/16	AS12	New York University	65,536
128.198.0.0/16	AS396425	University of Colorado, Colorado Springs	65,536
128.2.0.0/16	AS9	Carnegie Mellon University	65,536
128.29.0.0/16	AS35	The MITRE Corporation	65,536
128.146.0.0/16	AS159	Ohio State University	65,536
128.80.0.0/16	AS749	DoD Network Information Center	65,536
128.164.0.0/16	AS11039	The George Washington University	65,536
128.3.0.0/16	AS16	Lawrence Berkeley National Laboratory	65,536
128.115.0.0/16	AS45	Lawrence Livermore National Laboratory	65,536
128.16.0.0/16	AS786	University College London	65,536
128.197.0.0/16	AS111	Boston University	65,536
128.227.0.0/16	AS6356	University of Florida	65,536
128.58.0.0/16	AS72	Schlumberger Omnes	65,536
128.23.0.0/16	AS13429	Medical University of South Carolina	65,536
128.211.0.0/16	AS17	Purdue University	65,536
128.87.0.0/16	AS158	Telefonaktiebolaget LM Ericsson	65,536
128.219.0.0/16	AS50	Oak Ridge National Laboratory	65,536
128.52.0.0/16	AS3	Massachusetts Institute of Technology	65,536
128.14.0.0/16	AS21859	Zenlayer Inc	65,536
128.53.0.0/16	AS2514	NTT PC Communications,Inc.	65,536
128.49.0.0/16	AS22	Navy Network Information Center (NNIC)	65,536
128.97.0.0/16	AS52	University of California, Los Angeles	65,536
128.54.0.0/16	AS7377	University of California, San Diego	65,536
128.37.0.0/16	AS27064	Headquarters, USAISC	65,536
128.195.0.0/16	AS299	University of California, Irvine	65,536
128.91.0.0/16	AS55	University of Pennsylvania	65,536
128.47.0.0/16	AS252	Headquarters, USAISC	65,536
128.158.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.183.0.0/16	AS270	National Aeronautics and Space Administration	65,536
128.165.0.0/16	AS68	Los Alamos National Laboratory	65,536
128.189.0.0/16	AS271	BCNET	65,536

Show more ranges

Hosted domains

There are 68 domain names hosted across 27 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address	Domain	Domains on this IP
128.138.68.45	eyestone.me	12
128.138.135.43	nsidc.org	11
128.138.136.14	psecco.org	7
128.138.136.36	reanalysis.net	4
128.138.93.164	contval.com	4
128.138.29.28	boulderinternshousing.com	3
128.138.136.96	geiacenter.org	2
128.138.73.57	matte.ooo	2
128.138.136.220	insidethegreenhouse.net	2
128.138.70.66	openearthscape.org	2
128.138.67.162	safe-schools.org	2
128.138.93.14	openmicrobiome.org	2
128.138.184.15	riverware.online	1
128.138.238.171	dsstmodel.org	1
128.138.184.20	riverware.org	1
128.138.67.18	theoryon.org	1
128.138.136.89	pacesproject.org	1
128.138.131.12	egy.org	1
128.138.136.128	learningassistantalliance.org	1
128.138.73.83	explicet.org	1

Hosted domains API

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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.

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