asn.dev

Autonomous system

AS27065 DNIC-ASBLK-27032-27159

Unclassified ARIN

IPv4 addresses 33.79K 53 prefixes
IPv6 prefixes 3 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 23 downstream
Flagged prefixes 0 none

Summary

DoD Network Information Center

United States of America · AI-generated

government defense military infrastructure

The AS handle DNIC-ASBLK-27032-27159 is held by DoD Network Information Center.

What it's used for

  • The address space carries Department of Defense network operations, evidenced by netnames such as DISA-CSD-101, DISA-EUROPE, and DNIC-NET-214, and reverse DNS entries pointing to socom.mil and disa.mil domains.
  • The AS announces 33,792 IPv4 addresses across 53 prefixes and 3 IPv6 prefixes, while maintaining 25 observed neighbours; this ratio of substantial address inventory against a moderate peer count indicates a large internal government network rather than a transit provider.

Notable

  • All registrants in the evidence pack are consistently listed as DoD Network Information Center, aligning perfectly with the AS holder identity.
  • The address inventory is finely subdivided into numerous /22, /23, and /24 blocks, reflecting site-by-site segmentation typical of a large corporate or government estate.
  • The presence of specific netnames like DISA-EUROPE suggests the space supports geographically distributed defense infrastructure.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 23 downstream and 30 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS721United States Department of Defense (DoD)3,541

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 53 prefixes · 33.79K addresses IPv6 3 prefixes

CountryNamePrefixes
USUnited States of America56

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
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

Full detail
RPKI
0% valid · 0 valid, 61 with no ROA
ROAs
0 authorising AS27065
ASPA
no ASPA record
IRR
0% registered · 0 of 61 announcements
Route objects
0 naming AS27065

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 1,784 prefixes, as published 2026-10-19. 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

Cross-check