AS104 University of Colorado at Boulder 🇺🇸 US
Announcing 25 prefixes, seen at the RIS collectors.
IPv4 prefixes
21
95,232 (372 × /24)
IPv6 prefixes
4
1 × /32
Upstreams
4
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS104
- Name
- University of Colorado at Boulder
- Organisation
- University of Colorado at Boulder
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 1987-04-09
- Scope
- Not Disclosed
- Peering policy
- Open
- PeeringDB
- net/21260
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
25 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 128.138.0.0/16 v4 | no ROA | 43 | 35493356104 | 2026-09-18 |
| 129.19.192.0/18 v4 | RPKI valid | 43 | 35493356104 | 2026-09-18 |
| 129.19.240.0/20 v4 | RPKI valid | 43 | 377213356104 | 2026-09-18 |
| 146.5.20.0/22 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.238.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.240.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.241.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.242.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.244.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 192.12.245.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.11.16.0/20 v4 | no ROA | 43 | 35493356104 | 2026-09-18 |
| 198.59.7.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.51.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.52.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.54.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.55.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.70.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.81.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.82.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 198.59.83.0/24 v4 | no ROA | 42 | 35493356104 | 2026-09-18 |
| 204.228.80.0/24 v4 | no ROA | 43 | 377213356104 | 2026-09-18 |
| 2001:468:501::/48 v6 | RPKI valid | 1 | 333311031153714041104 | 2026-09-18 |
| 2401:eee0:1c0::/42 v6 | RPKI invalid | 2 | 3800194985868214943365501104 | 2026-09-18 |
| 2401:eee0:200::/42 v6 | RPKI invalid | 2 | 3800194985868214943365501104 | 2026-09-18 |
| 2620:18f::/32 v6 | no ROA | 36 | 377213356104 | 2026-09-18 |