Autonomous system
AS195 SDSC-AS
Unclassified ARIN
Summary
San Diego Supercomputer Center (SDSC)
education research legacy
An early allocation (SDSC-AS) serving the San Diego Supercomputer Center at the University of California, San Diego, a national center for high-performance computing and data science.
What it's used for
- Networking for supercomputing, research data, and scientific computing.
Notable
- An academic/research supercomputing network, not commercial hosting. The low AS number reflects an allocation from the internet's earliest years.
Interesting
- SDSC was one of the original NSF supercomputer centers established in the 1980s, central to early US research networking.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 203 prefixes · 154K addresses IPv6 10 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 213 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS195- Registry name
- SDSC-AS
- Registrant
- San Diego Supercomputer Center
- Abuse contact
- abuse@sdsc.edu
- Registered
- 1988-05-26
- Last changed
- 2023-06-01
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 48 with no ROA
- ROAs
- 0 authorising AS195
- ASPA
- no ASPA record
- IRR
- 96% registered · 46 of 48 announcements
- Route objects
- 56 naming AS195
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