Autonomous system
AS103 NWU-AS
Unclassified ARIN
Summary
Northwestern University
education university research legacy
An early allocation (NWU-AS) serving Northwestern University in Evanston, Illinois.
What it's used for
- Campus, research, and administrative networking for Northwestern University.
Notable
- An institutional / "eyeball" network for a research university, not commercial hosting. The low AS number reflects how early Northwestern connected, in the internet's first 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
10 upstream, 0 downstream and 13 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 2026-10-29, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 22 prefixes · 150K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 25 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS103- Registry name
- NWU-AS
- Registrant
- Northwestern University
- Abuse contact
- security@northwestern.edu
- Registered
- 1987-04-09
- Last changed
- 2012-04-02
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Northwestern University
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Restrictive
- Facilities
- 1 facilities
- Website
- https://www.northwestern.edu
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
- 0% valid · 0 valid, 28 with no ROA 2 RPKI-invalid
- ROAs
- 0 authorising AS103
- ASPA
- no ASPA record
- IRR
- 93% registered · 28 of 30 announcements
- Route objects
- 41 naming AS103
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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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