AS104
University of Colorado at Boulder
USUnknown2026-08-06
Announced prefixes 22
128.138.0.0/16129.19.192.0/18146.5.20.0/22192.12.238.0/24192.12.240.0/24192.12.241.0/24192.12.242.0/24192.12.244.0/24192.12.245.0/24198.11.16.0/20198.59.7.0/24198.59.51.0/24198.59.52.0/24198.59.54.0/24198.59.55.0/24198.59.70.0/24198.59.81.0/24198.59.82.0/24198.59.83.0/24204.228.80.0/242001:468:501::/482620:18f::/32Snapshot history
| Date | Name | Country | Class | Prefixes |
|---|---|---|---|---|
| 2026-11-11 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-10 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-09 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-08 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-07 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-06 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-05 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-04 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-03 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-02 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-11-01 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-31 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-30 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-29 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-28 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-27 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-26 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-25 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-24 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-23 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-22 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-21 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-20 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-19 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-18 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-17 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-16 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-15 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-14 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-13 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-12 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-11 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-10 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-09 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-08 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-07 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-06 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-05 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-04 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-03 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-02 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-10-01 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-30 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-29 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-28 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-27 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-26 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-25 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-24 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-23 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-22 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-21 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-20 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-19 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-18 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-17 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-16 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-15 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-14 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-13 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-12 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-11 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-10 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-09 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-08 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-07 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-06 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-05 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-04 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-03 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-02 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-09-01 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-31 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-30 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-29 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-28 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-27 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-26 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-25 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-24 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-23 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-22 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-21 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-20 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-19 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-18 | University of Colorado at Boulder | US | Unknown | 25 |
| 2026-08-17 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-16 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-15 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-14 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-13 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-12 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-11 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-10 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-09 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-08 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-07 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-06 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-05 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-04 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-03 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-02 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-08-01 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-31 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-30 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-29 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-28 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-27 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-26 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-25 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-24 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-23 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-22 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-21 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-20 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-19 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-18 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-17 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-16 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-15 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-14 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-13 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-12 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-11 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-10 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-09 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-08 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-07 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-06 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-05 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-04 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-03 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-02 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-07-01 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-30 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-29 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-28 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-27 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-26 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-25 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-24 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-23 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-22 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-21 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-20 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-19 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-18 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-17 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-16 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-15 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-14 | University of Colorado at Boulder | US | Unknown | 22 |
| 2026-06-13 | University of Colorado at Boulder | US | Unknown | 22 |
IP-block changes
Open full filtered history →| Observed | Block | Action | Previous origins | New origins |
|---|---|---|---|---|
| 2026-08-18 | 129.19.240.0/20 | Acquired | — | AS104 |
| 2026-08-18 | 2401:eee0:1c0::/42 | Acquired | — | AS104 |
| 2026-08-18 | 2401:eee0:200::/42 | Acquired | — | AS104 |
Changes page 1