Autonomous system
AS1909 CAIDA
Unclassified ARIN
Summary
CAIDA (Center for Applied Internet Data Analysis)
research education legacy
The network of CAIDA (CAIDA), the Center for Applied Internet Data Analysis, based at the San Diego Supercomputer Center at the University of California, San Diego.
What it's used for
- Internet measurement research: collecting and analyzing data on the structure, routing, and performance of the global internet.
Notable
- A research network, not a commercial ISP. CAIDA is one of the best-known academic groups studying internet topology and traffic, and operates measurement infrastructure from this AS.
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, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS195 | San Diego Supercomputer Center | 133 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 76 prefixes · 147 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 77 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1909- Registry name
- CAIDA
- Registrant
- San Diego Supercomputer Center
- Abuse contact
- abuse@sdsc.edu
- Registered
- 1992-06-02
- Last changed
- 2024-01-10
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS1909
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 4 naming AS1909
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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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