Summary

Country
US United States
Organization University of Colorado at Boulder
Domain colorado.edu
Number of IPv4 74,752
Number of IPv6 7.9229× 1028
AS Type Education
Registry ARIN
Allocated April 09, 1987 (about 38 years ago)
Updated June 25, 2019 (about 5 years ago)

IP Ranges

AS104 announces 19 IPv4 ranges and 2 IPv6 ranges.

That's a total of 74,752 IPv4 addresses and 7.9229× 1028 IPv6 addresses.

Prefix Organization Size Registry Status
128.138.0.0/16
US University of Colorado
65,536 ARIN ALLOCATION
146.5.20.0/22
US National Solar Observatory
1,024 ARIN ALLOCATION
192.12.238.0/24
US University of Colorado
256 ARIN ALLOCATION
192.12.240.0/24
US University of Colorado
256 ARIN ALLOCATION
192.12.241.0/24
US University of Colorado
256 ARIN ALLOCATION
192.12.242.0/24
US University of Colorado
256 ARIN ALLOCATION
192.12.244.0/24
US University of Colorado
256 ARIN ALLOCATION
192.12.245.0/24
US University of Colorado
256 ARIN ALLOCATION
198.11.16.0/20
US University of Colorado Boulder
4,096 ARIN ALLOCATION
198.59.7.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.51.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.52.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.54.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.55.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.70.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.81.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.82.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
198.59.83.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
204.228.80.0/24
US University of Colorado Boulder
256 ARIN ALLOCATION
Prefix Organization Size Registry Status
2001:468:501::/48
US University Corporation for Atmospheric Research
1.2089× 1024 ARIN REALLOCATION
2620:18f::/32
US University of Colorado Boulder
7.9228× 1028 ARIN ALLOCATION

Peers

There is no peer for AS104.

Upstreams

There are 2 upstreams for AS104:

Downstreams

There is no downstream for AS104.

Get started with 100,000 free lookups: sign up