Autonomous system
AS5721 NDU-NET
Unclassified ARIN
Summary
National Defense University
government military education legacy
The network of the National Defense University, the US Department of Defense's
joint professional military education institution in Washington, DC, under the
handle NDU-NET.
What it's used for
- Connectivity for a DoD university that educates senior military officers and civilian officials, spanning its constituent colleges and research centres.
- Originates two /24s out of
216.21.18.0/23— a compact footprint for a single campus.
Notable
- A government and military address space, but an academic one: this is a degree- granting institution under DoD, not an operational or tactical network.
- ARIN records date the organisation to 1994 and the AS number to 1995, so unlike many low numbers in this range it is an original assignment, not a modern reissue.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS5721- Registry name
- NDU-NET
- Registrant
- National Defense University
- Abuse contact
- chris.hartley.ctr@ndu.edu
- Registered
- 1995-09-06
- Last changed
- 2015-05-07
- Status
- active
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere