Autonomous system
AS27046 DNIC-ASBLK-27032-27159
Unclassified ARIN
Summary
United States Department of Defense
government military defense network
The AS handle DNIC-ASBLK-27032-27159 is held by the United States Department of Defense.
What it's used for
- The address space carries internal DoD networks, with netnames identifying specific agencies such as
DSCC,DLA-PACIFIC-NET,DGSC,DDTC, andCLOUD-SVCS-138-141. - The AS announces 312,320 IPv4 addresses across 373 prefixes and 104 IPv6 prefixes, while maintaining only 4 observed neighbours, indicating a large, self-contained internal estate rather than a transit or access network.
Notable
- All sampled registrants are listed as "DoD Network Information Center," which aligns directly with the announcer's identity as the Department of Defense.
- The address inventory is finely subdivided into numerous /19, /20, and /21 blocks, reflecting site-by-site segmentation for different defense agencies and commands.
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
4 upstream, 0 downstream and 5 adjacent networks observed; most-used upstreams first.
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 373 prefixes · 312K addresses IPv6 104 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 477 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27032- Registry name
- DNIC-ASBLK-27032-27159
- Registrant
- United States Department of Defense (DoD)
- Abuse contact
- disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
- Registered
- 2003-01-16
- Last changed
- 2025-09-12
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 627 with no ROA
- ROAs
- 0 authorising AS27046
- ASPA
- no ASPA record
- IRR
- 2% registered · 12 of 627 announcements
- Route objects
- 38 naming AS27046
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