Autonomous system
AS1493 DNIC-ASBLK-01492-01493
Unclassified ARIN
Summary
US Department of Defense
government military legacy
AS1493 is a US Department of Defense network, part of the block registered to the DoD Network Information Center (DNIC-ASBLK-01492-01493).
What it's used for
- US government / military networking. The generic DNIC block registration doesn't identify a specific base or unit.
Notable
- A government / DoD network, not a commercial ISP or host. It shares its block with the adjacent AS1492.
- Registered to the DoD Network Information Center (DNIC), holder of many contiguous low-numbered federal ASNs.
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 |
|---|---|---|
| AS1540 | Headquarters, USAISC | 1,657 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-21, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 27 prefixes · 120K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 27 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1492- Registry name
- DNIC-ASBLK-01492-01493
- Registrant
- Headquarters, USAISC
- Abuse contact
- disa.columbus.ns.mbx.arin-registrations@mail.mil
- Registered
- 2004-05-12
- Last changed
- 2011-08-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 30 with no ROA
- ROAs
- 0 authorising AS1493
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 30 announcements
- Route objects
- 0 naming AS1493
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 2026-10-22. 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