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AS678

Not announced

Last known operator United States Department of Defense (DoD). No prefixes for this AS number were observed in the RouteViews RIB.

Summary

// analyst note
Dormant legacy DoD ASN. WHOIS/RDAP resolves to DoD (DNIC) via DISA, but the ASN currently originates nothing in the global routing table — 0 prefixes, 0 peers, 0 upstreams across RIPEstat, CAIDA, and bgp.he.net. Allocated_date (1990-06-05) taken strictly from the RDAP autnum top-level events[] array, not the nested entity records (which carry unrelated later dates). Do not confuse with AS8003.
// security note
NEUTRAL/DATED: no notable public abuse signal found as of 2026-07-18; not in Spamhaus ASN-DROP, abuse.ch, or NANOG archives (absence-of-evidence, not a live database query).
IPv4 prefixes
0
~0 addresses
IPv6 prefixes
0
—
Peer networks
0
0 up · 0 down
IANA block
1-1876
Assigned by ARIN
[ 01 ] — Context

About this ASN.

Updated  ·  Confidence: High  ·  17 sources  ·  How this page is checked

AS678 (DNIC-AS-00678) is a dormant legacy autonomous system registered under ARIN to the United States Department of Defense (DoD) that currently announces zero IPv4 and zero IPv6 prefixes in the global routing table. The registry record is active, but live BGP data from RIPEstat, CAIDA AS Rank, and Hurricane Electric's BGP Toolkit all agree the ASN has no announced address space, no peers, and no upstreams as of 2026-07-18.

The ASN's ARIN autnum record carries a top-level registration date of 1990-06-05, placing it within IANA's original 1-1876 16-bit AS number block delegated to ARIN. It is administered by the DoD Network Information Center (DNIC) via DISA (Defense Information Systems Agency), with registrant address 3990 E. Broad Street, Columbus, OH, and contact entities based at DISA-Columbus in Whitehall, OH.

AS678 sits alongside other low-numbered DNIC-registered ASNs such as AS367 and AS668, suggesting a block of legacy numbers assigned to DoD early in the Internet's history rather than one named operational network. No source ties AS678 to a specific DoD network segment such as NIPRNet, and no public operator website or PeeringDB entry exists for it — that link stays Unknown.

Exposure
AS678 announces zero IPv4/IPv6 prefixes and has zero observed BGP peers or upstreams, so it currently presents no live routed attack surface.
Abuse signal
No notable public abuse signal found as of 2026-07-18 across Spamhaus DROP/ASN-DROP, abuse.ch, and NANOG mailing-list archives; this is a sourced absence-of-evidence finding, not a direct database query result.
Disambiguation
Do not confuse AS678 with AS8003 (GRS-DoD / Global Resource Systems LLC), the much larger DoD ASN that made news in April 2021 for suddenly announcing roughly 175-178 million dark IPv4 addresses; that event belongs to AS8003, not AS678.
RPKI
Not assessable — the ASN announces no prefixes, so RIPEstat's rpki-validation check (which requires a specific prefix) was skipped rather than fabricated.
Country / RIR
US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin)
Allocated
1990-06-05 (ARIN RDAP autnum TOP-LEVEL registration event); last changed 2025-09-12 [Confirmed] — rdap.arin.net/registry/autnum/678
Website
none current / Unknown — no live AS678-specific operator page found; historical nic.mil only reachable via a 2008 web-archive snapshot [Confirmed absence] — webarchive.library.unt.edu/eot2008/20080916004157/http:/nic.mil/

Abuse contact

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil

[Confirmed] — rdap.arin.net/registry/autnum/678

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-18 across Spamhaus DROP/ASN-DROP, abuse.ch, and NANOG archives

[Likely] — bgp.he.net/AS678, spamhaus.org/blocklists/do-not-route-or-peer, seclists.org/nanog

Network & routing

Network type
government/military ASN, part of the DoD Information Network (DODIN) under DISN/DISA [Likely] — esd.whs.mil/Portals/54/Documents/DD/issuances/dodi/801001p.pdf
Routing status
dormant — 0 IPv4 and 0 IPv6 announced prefixes; 0 RIS peers seeing it (0/325 v4, 0/321 v6); customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — stat.ripe.net/AS678, bgp.he.net/AS678, api.asrank.caida.org/v2/restful/asns/678
Peering/upstreams
none observed; no PeeringDB entry (peeringdb.com/asn/678 returns 404) [Confirmed] — peeringdb.com/asn/678, db-ip.com/as678-dod-network-information-center
RPKI
not assessable — no announced prefixes, so RIPEstat's rpki-validation (requires a prefix) was skipped rather than run [Unknown] — stat.ripe.net
CAIDA AS rank
79459; degree total 0 (customer 0, peer 0, provider 0) [Confirmed] — api.asrank.caida.org/v2/restful/asns/678
ASN
AS678 (DNIC-AS-00678) [Confirmed] — rdap.arin.net/registry/autnum/678
Registrant / operating entity
United States Department of Defense (DoD); administered by the DoD Network Information Center (DNIC) via DISA; registrant address 3990 E. Broad Street, Columbus, OH; contact entities at DISA-Columbus, 300 North James Road, Whitehall, OH 43213 [Confirmed] — rdap.arin.net/registry/autnum/678
Related legacy block
sibling DNIC-registered low-numbered ASNs include AS367 and AS668, consistent with a block assigned to DoD in the early Internet era rather than one named network; no confirmed link to a specific segment like NIPRNet [Likely] — iana.org/assignments/as-numbers/as-numbers.xhtml, bgpview.io/asn/668
Disambiguation
not to be confused with AS8003 (GRS-DoD), the separate DoD ASN behind the April 2021 ~175-178M dark-IPv4 BGP announcement [Confirmed] — theregister.com/2021/04/26/defense_department_ipv6
[ 02 ] — Announced prefixes

What this network routes.

0 prefixes total · as observed by RouteViews at 2026-09-20 · one collector view, not a global census
// IPv4 prefixes0
No IPv4 prefixes announced.
// IPv6 prefixes0
No IPv6 prefixes announced.
[ 03 ] — Notable peers & upstreams

Who it talks to.

0 observed neighbours
Neighbour data unavailable from public BGP collectors.