Autonomous system
AS12145 COLORADOSTATEUNIV - Colorado State University
Unclassified ARIN
Summary
Colorado State University
education university research nren
The campus network of Colorado State University in Fort Collins, which also carries the address space of the regional research network CSU operates.
What it's used for
- Campus networking for teaching and research, plus the aggregation point for a research network serving institutions across the region.
Notable
- The announcements split cleanly in two.
129.82.0.0/16is registered asCSUNETand is the campus itself. The six smaller prefixes out of129.19all carry the netnameCSU-FRGP-19— FRGP is the Front Range GigaPop, the Colorado research network CSU runs, which connects universities, federal labs and other research bodies in Colorado and Wyoming onward to the national research backbone. - Six observed BGP neighbours for 81,000 addresses. Modest for a network with a regional aggregation role, but a gigapop's members mostly appear behind it rather than as separate BGP adjacencies at this level.
- No IPv6 announced.
Interesting
- The gigapop model is a piece of 1990s research-networking design that never went away. A university takes on the job of hauling traffic for everyone else in its region, which is why a state school's AS ends up holding address space that has nothing to do with its own campus.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 5 downstream and 6 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS14041 | University Corporation for Atmospheric Research | 75 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 81.66K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS12145- Registry name
- COLORADOSTATEUNIV
- Registrant
- Colorado State University
- Abuse contact
- dns.admin@colostate.edu
- Registered
- 1999-04-06
- Last changed
- 2022-07-14
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 3 authorising AS12145
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 11 naming AS12145
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 453 networks and 1,846 prefixes, as published 2026-11-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere