Autonomous system
AS22851 NSU-SD - Northern State University
Unclassified ARIN
Summary
Northern State University
education university us
The AS handle NSU-SD is held by Northern State University.
What it's used for
- The address space carries university infrastructure, evidenced by netnames
DDN-NSU-1,NORTHERNSTU, andDDN-NSU-2, and a reverse DNS record pointing tonat126.northern.edu. - The AS announces 1024 IPv4 addresses across 3 prefixes with only 2 observed neighbours, a ratio typical of an access or internal campus network rather than a transit provider.
Notable
- All registrants for the announced prefixes are listed as Northern State University, matching the AS holder.
- The address inventory consists of three small IPv4 blocks with no announced IPv6 prefixes.
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 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 1.02K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS22851- Registry name
- NSU-SD
- Registrant
- Northern State University
- Abuse contact
- casanova@northern.edu
- Registered
- 2001-12-05
- Last changed
- 2021-10-08
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 4 authorising AS22851
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 5 naming AS22851
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: 454 networks and 1,854 prefixes, as published 2026-11-06. 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