Autonomous system
AS81 NCREN
Unclassified ARIN Educational/Research
Summary
MCNC / North Carolina Research and Education Network (NCREN)
education research legacy
The North Carolina Research and Education Network (NCREN), a statewide research and education network built and operated by the nonprofit MCNC.
What it's used for
- Providing broadband connectivity to universities, K-12 schools, community colleges, libraries, and non-profit health care across North Carolina.
Notable
- A regional research-and-education network (NREN), not a commercial ISP. One of America's longest-running regional R&E networks. The low AS number reflects an allocation from the internet's earliest years.
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
7 upstream, 39 downstream and 57 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 196 prefixes · 1.96M addresses IPv6 66 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 262 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS81- Registry name
- NCREN
- Registrant
- MCNC
- Abuse contact
- abuse@mcnc.org
- Registered
- 1986-08-07
- Last changed
- 2026-06-10
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- MCNC
- Also known as
- NCREN
- Network type
- Educational/Research
- Scope
- Regional
- Traffic ratio
- Balanced
- Peering policy
- Open
- IRR as-set
ARIN::AS-NCREN- Website
- http://www.mcnc.org
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
- 78% valid · 108 valid, 30 with no ROA
- ROAs
- 154 authorising AS81
- ASPA
- no ASPA record
- IRR
- 100% registered · 138 of 138 announcements
- Route objects
- 234 naming AS81
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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