Autonomous system
AS1649 DNIC-AS-01649 - Headquarters, USAISC
Unclassified ARIN
Summary
US Department of Defense
government military legacy
A US Department of Defense network (DNIC-AS-01649), registered through the Defense Network Information Center (DNIC), which holds many federal and military ASNs.
What it's used for
- US government / DoD operational networking.
Notable
- A government / military network, not a commercial ISP or host. The generic DNIC registration does not identify a specific base or unit.
- The low AS number reflects an early Department of Defense allocation from 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
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS27066 | United States Department of Defense (DoD) | 3,752 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-12, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 102 prefixes · 132K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 103 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1649- Registry name
- DNIC-AS-01649
- Registrant
- Headquarters, USAISC
- Abuse contact
- disa.columbus.ns.mbx.arin-registrations@mail.mil
- Registered
- 2004-05-12
- Last changed
- 2011-08-24
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 62 with no ROA
- ROAs
- 0 authorising AS1649
- ASPA
- no ASPA record
- IRR
- 3% registered · 2 of 62 announcements
- Route objects
- 1 naming AS1649
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: 455 networks and 1,849 prefixes, as published 2026-11-13. 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