Autonomous system
AS5927 DNIC-ASBLK-05800-06055
Unclassified ARIN
Summary
DoD Network Information Center
government military legacy
A US Department of Defense network from the block DNIC-ASBLK-05800-06055, registered to the DoD Network Information Center (DNIC). It is the AS that announces G-root, one of the thirteen DNS root name servers.
What it's used for
- Announcing the address space behind
g.root-servers.net(192.112.36.0/24and2001:500:12::/48), the root server operated by the Defense Information Systems Agency (DISA). - General DoD network operations across a spread of DNIC-held ranges, including
214.xspace from the DoD-held/8s.
Notable
- A government / DoD network, not a commercial ISP or host. Of the thirteen root server letters, G is the one run by a military organisation.
- G-root is anycast from multiple sites worldwide, so the AS is US-registered but its routes are visible globally.
- Part of a contiguous run of ASNs (5800–6055) held by the DoD Network Information Center.
Interesting
- The root-server address
192.112.36.4has been stable for decades, which is the whole point: root server addresses are baked into the root hints file shipped with essentially every recursive resolver, so they can effectively never change.
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 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 6.14K addresses IPv6 9 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 23 |
Registry
Allocation record
- 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
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 33 with no ROA
- ROAs
- 0 authorising AS5927
- ASPA
- no ASPA record
- IRR
- 3% registered · 1 of 33 announcements 1 other origin
- Route objects
- 1 naming AS5927
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 2026-10-21. 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