Autonomous system
AS257 DNIC-AS-00257
Unclassified ARIN
Summary
US Department of Defense
government military legacy
An early US Department of Defense allocation (DNIC-AS-00257), registered through the DoD Network Information Center (DNIC), which holds many federal ASNs.
What it's used for
- US government / military networking. The generic DNIC registration does not identify a specific base or unit.
Notable
- A US government / DoD network, not a commercial ISP or host.
- The low AS number reflects a very early allocation, handed out roughly sequentially in the internet's first years.
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 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 8 prefixes · 716 addresses IPv6 5 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 13 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS257- Registry name
- DNIC-AS-00257
- Registrant
- Navy Network Information Center (NNIC)
- Abuse contact
- disa.columbus.ns.mbx.arin-registrations@mail.mil
- Registered
- 1988-12-22
- Last changed
- 2011-07-05
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 7 with no ROA
- ROAs
- 0 authorising AS257
- ASPA
- no ASPA record
- IRR
- 86% registered · 6 of 7 announcements
- Route objects
- 6 naming AS257
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: 440 networks and 1,773 prefixes, as published 2026-10-13. 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