Autonomous system
AS1540 DNIC-ASBLK-01534-01546
Unclassified ARIN
Summary
US Department of Defense
government military legacy
AS1540 is a US Department of Defense network, part of the block registered to the DoD Network Information Center (DNIC-ASBLK-01534-01546).
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 hosting provider.
- 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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1,264 prefixes · 7.47M addresses IPv6 63 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1,327 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS1534- Registry name
- DNIC-ASBLK-01534-01546
- 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, 2,092 with no ROA
- ROAs
- 0 authorising AS1540
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 2,092 announcements
- Route objects
- 0 naming AS1540
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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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