Autonomous system
AS1733 DISACENT-NIPR-ASN
Unclassified ARIN
Summary
US Department of Defense (DISA / NIPRNet)
government military legacy
A US Department of Defense network (DISACENT-NIPR-ASN), associated with the Defense Information Systems Agency (DISA) and the Non-classified Internet Protocol Router Network (NIPRNet). Registered to the DoD Network Information Center (DNIC).
What it's used for
- Carrying unclassified DoD traffic and providing gateway connectivity between military networks and the public internet.
Notable
- A US government / DoD network, not a commercial ISP. NIPRNet is managed by DISA as part of the Defense Information Systems Network (DISN).
Interesting
- The low AS number reflects an early allocation, dating to the era when the DoD's networks were foundational to the internet's growth.
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, 10 downstream and 13 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS27065 | United States Department of Defense (DoD) | 700 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 4.61K addresses IPv6 3 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 13 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1733- Registry name
- DISACENT-NIPR-ASN
- Registrant
- United States Department of Defense (DoD)
- Abuse contact
- disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
- Registered
- 1992-01-08
- Last changed
- 2025-09-12
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 13 with no ROA
- ROAs
- 0 authorising AS1733
- ASPA
- no ASPA record
- IRR
- 8% registered · 1 of 13 announcements
- Route objects
- 2 naming AS1733
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: 442 networks and 1,779 prefixes, as published 2026-10-21. 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