Autonomous system
AS749 DNIC-AS-00749
Unclassified ARIN
Summary
US Department of Defense
government military legacy
A US Department of Defense allocation (DNIC-AS-00749), registered to the DoD Network Information Center (DNIC).
What it's used for
- US Department of Defense networking, announcing a large block of legacy IPv4 address space.
Notable
- A US government / DoD network, not a commercial ISP or host. Registered to the DoD Network Information Center (DNIC), which holds many federal ASNs and large legacy IPv4 allocations. The low AS number reflects an early-internet allocation.
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 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3356 | Level 3 Parent, LLC | 187,934 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5,214 prefixes · 222M addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5,214 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS749- Registry name
- DNIC-AS-00749
- Registrant
- United States Department of Defense (DoD)
- Abuse contact
- disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
- Last changed
- 2025-09-12
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- United States Department of Defense
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS749:AS-CONE
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, 3,133 with no ROA
- ROAs
- 0 authorising AS749
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 3,133 announcements 16 other origin
- Route objects
- 0 naming AS749
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: 432 networks and 1,768 prefixes, as published 2026-10-12. 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