AS104
University of Colorado at Boulder · colorado.edu
AS104 – University of Colorado at Boulder
| Field | Value |
|---|---|
| Country |
United States
|
| Website | colorado.edu |
| Hosted domains | 76 |
| Number of IPv4 | 74,752 |
| Number of IPv6 | 79,229,371,440,083,952,222,718,656,512 |
| ASN type | Education |
| Registry | arin |
| Allocated | 37 years ago on Apr 09, 1987 |
| Updated | 4 years ago on Jun 25, 2019 |
IP Ranges
| Netblock | Company | Num of IPs |
|---|---|---|
| 128.138.0.0/16 | University of Colorado | 65,536 |
| 146.5.20.0/22 | National Solar Observatory | 1,024 |
| 192.12.238.0/24 | University of Colorado | 256 |
| 192.12.240.0/24 | University of Colorado | 256 |
| 192.12.241.0/24 | University of Colorado | 256 |
| 192.12.242.0/24 | University of Colorado | 256 |
| 192.12.244.0/24 | University of Colorado | 256 |
| 192.12.245.0/24 | University of Colorado | 256 |
| 198.11.16.0/20 | University of Colorado Boulder | 4,096 |
| 198.59.51.0/24 | University of Colorado Boulder | 256 |
| 198.59.52.0/24 | University of Colorado Boulder | 256 |
| 198.59.54.0/24 | University of Colorado Boulder | 256 |
| 198.59.55.0/24 | University of Colorado Boulder | 256 |
| 198.59.70.0/24 | University of Colorado Boulder | 256 |
| 198.59.7.0/24 | University of Colorado Boulder | 256 |
| 198.59.81.0/24 | University of Colorado Boulder | 256 |
| 198.59.82.0/24 | University of Colorado Boulder | 256 |
| 198.59.83.0/24 | University of Colorado Boulder | 256 |
| 204.228.80.0/24 | University of Colorado Boulder | 256 |
| Netblock | Company |
|---|---|
| 2001:468:501::/48 | University Corporation for Atmospheric Research |
| 2620:18f::/32 | University of Colorado Boulder |
WHOIS Details
ASHandle: AS104 OrgID: UCAB-2 ASName: COLORADO-AS ASNumber: 104 RegDate: 1987-04-09 Updated: 2019-06-25 AbuseHandle: ABUSE306-ARIN TechHandle: CUBOU-ARIN Source: ARIN OrgID: UCAB-2 OrgName: University of Colorado at Boulder CanAllocate: Street: Campus Box 455 City: Boulder State/Prov: CO Country: US PostalCode: 80309-0455 RegDate: 1987-04-09 Updated: 2019-06-25 OrgAbuseHandle: ABUSE306-ARIN OrgAdminHandle: CUBOU-ARIN OrgTechHandle: CUBOU-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: 2023-07-21 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: 2023-07-05 OfficePhone: +1-303-735-4357 Mailbox: arinadmin@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: 2023-07-05 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: 2023-07-21 OfficePhone: +1-303-735-4357 Mailbox: abuse@colorado.edu Source: ARIN
Hosted Domains
There are 76 domain names hosted across 38 IP addresses on this ASN.
Upstreams
There are 3 upstreams for this ASN.
| upstreams | Name |
|---|---|
| AS139008 | NEEF IT LIMITED |
| AS14041 | University Corporation for Atmospheric Research |
| AS209 | CenturyLink Communications, LLC |
Downstreams
There are no downstreams for this ASN.
Related Networks
What is an ASN?
Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.
The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS104 at robtex.
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