Autonomous system
AS11442 NCSU
Education ARIN
Summary
North Carolina State University
education university research legacy
NCSU is North Carolina State University's autonomous system, announcing the Raleigh campus network. It is a textbook university AS: a few very large legacy blocks, campus-wide reverse DNS, and a single upstream.
What it's used for
RIS shows 4 IPv4 prefixes totalling 197,632 addresses — three /16s (152.1.0.0/16, 152.7.0.0/16, 152.14.0.0/16) plus 204.84.244.0/22 — and one IPv6 prefix, 2605:100::/32. All three /16s are registered in ARIN to North Carolina State University itself (NCSU, NCSU2, NCSU3). Three class-B-sized blocks for one campus is the hallmark of an institution that was allocated space in the era when universities took /16s as a matter of course, and never had reason to give them back.
Reverse DNS confirms the space carries the university's own users and machines: samples resolve to psymet.ced.ncsu.edu, deepexplorer.csc.ncsu.edu and catv-ctrl-iv-1.comtech.ncsu.edu — hosts inside academic departments (the College of Engineering and Design, Computer Science), named per-machine rather than out of a generic pool. That is a campus with globally routable addresses on real workstations and lab systems, which is how these networks were built and, in many places, still are.
Notable
The 204.84.244.0/22 is registered not to NCSU but to MCNC, under the handle NCREN-CIDR3. This is not a third-party leasing signal: MCNC operates NCREN, the North Carolina Research and Education Network, which is NC State's regional research-network provider. Space assigned by an R&E network to a member campus is ordinary provider-assigned addressing.
Interesting
Only one observed neighbour. That single adjacency is NCREN itself: the campus reaches the internet through the state research network rather than by buying commodity transit directly, which is the standard connectivity model for a US public university.
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 |
|---|---|---|
| AS81 | MCNC | 287 |
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 4 prefixes · 198K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11442- Registry name
- NCSU
- Registrant
- North Carolina State University
- Abuse contact
- abuse@ncsu.edu
- Registered
- 2006-02-09
- Last changed
- 2012-03-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 40% valid · 2 valid, 3 with no ROA
- ROAs
- 2 authorising AS11442
- ASPA
- no ASPA record
- IRR
- 100% registered · 5 of 5 announcements
- Route objects
- 6 naming AS11442
Reputation
Classification and threat
Education University, school or national research and education network.
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: 440 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