Autonomous system
AS2152 CENIC-2152
Unclassified RIPE
Summary
Corporation for Education Network Initiatives in California (CENIC)
education research legacy
CENIC-2152 belongs to the Corporation for Education Network Initiatives in California, which operates CalREN, the research and education network serving California's schools, colleges, universities, and libraries.
What it's used for
- A high-capacity backbone connecting the University of California, California State University, community colleges, K-12 districts, and research institutions.
Notable
- An education and research network, not a commercial ISP. It announces a very large IPv4 footprint on behalf of its many member institutions.
Interesting
- The low AS number reflects an early allocation to one of the United States' major regional research networks.
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
Recorded at 6 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange San Jose (Bay Area) | San Jose, United States | 206.223.117.118 |
| Equinix Internet Exchange Los Angeles | Los Angeles, United States | 206.223.123.95 |
| Equinix Internet Exchange Palo Alto | Palo Alto, United States | 198.32.176.33 |
| Equinix Los Angeles IBX | Los Angeles, United States | 206.223.123.95 |
| Equinix IBX Secaucus | Secaucus, United States | 206.223.117.118 |
| Megaport IX Los Angeles | Los Angeles, United States | 206.53.172.40 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1,727 prefixes · 1.92M addresses IPv6 1,455 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3,182 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS2152- Registry name
- CENIC-2152
- Registrant
- CENIC
- Abuse contact
- abuse@cenic.org
- Registered
- 2024-07-08
- Last changed
- 2024-07-08
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 4% valid · 27 valid, 731 with no ROA
- ROAs
- 41 authorising AS2152
- ASPA
- no ASPA record
- IRR
- 99.1% registered · 751 of 758 announcements
- Route objects
- 199 naming AS2152
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: 442 networks and 1,773 prefixes, as published 2026-10-13. 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