asn.dev

Autonomous system

AS5839 DNIC-ASBLK-05800-06055

Unclassified ARIN

IPv4 addresses 79.10K 46 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Flagged prefixes 0 none

Summary

US Department of Defense

United States · AI-generated

government military legacy

AS5839 is a US Department of Defense network from the block

DNIC-ASBLK-05800-06055, registered to the DoD Network Information Center (DNIC).

What it's used for

  • US government / military network operations. The generic DNIC registration does not identify the particular site or command behind this ASN.

Notable

  • Government / military space, not a commercial ISP or host.
  • Around 75,000 addresses announced across roughly 50 prefixes, mostly in the 205.x ranges. The many small prefixes suggest a number of separate sites routed under one AS.
  • Sits inside a contiguous block of DoD ASNs (5800–6055) handed to the DNIC at once, which is why so many neighbouring numbers share the same registration.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Address space

Summary

Full explorer
CountryNamePrefixes
USUnited States of America46

Registry

Allocation record

via ARIN RDAP
Registry
ARIN
Handle
AS5800
Registry name
DNIC-ASBLK-05800-06055
Registrant
United States Department of Defense (DoD)
Abuse contact
disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Registered
1995-10-24
Last changed
2025-09-12
Status
active

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

No IC3 indicators Nothing from the FBI IC3 feed.

Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check