Autonomous system
AS1224 NCSA-AS
Unclassified ARIN
Summary
National Center for Supercomputing Applications (NCSA)
education research legacy
The network of the National Center for Supercomputing Applications (NCSA-AS) at the University of Illinois Urbana-Champaign.
What it's used for
- High-performance computing and research networking for NCSA and its national supercomputing users.
Notable
- A low, early-internet AS number reflecting NCSA's role as one of the original US national supercomputer centers.
Interesting
- NCSA is where NCSA Mosaic, the web browser that popularized the World Wide Web, was created in the early 1990s.
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 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 65.79K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1224- Registry name
- NCSA-AS
- Registrant
- University of Illinois
- Abuse contact
- neteng@ncsa.illinois.edu
- Registered
- 1991-02-25
- Last changed
- 2024-02-12
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- National Center for Supercomputing Applications
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 33% valid · 1 valid, 2 with no ROA
- ROAs
- 1 authorising AS1224
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 5 naming AS1224
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 1,779 prefixes, as published 2026-10-23. 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