AS564

AS564 is a legacy autonomous system number registered under ARIN to the United States Department of Defense (DoD), carrying the DNIC (DoD Network Information Center) naming convention typical of early military allocations. The ARIN RDAP autnum record's top-level registration event dates the allocation to 1990-01-16, with a most-recent "last changed" event on 2025-09-12 — an administrative record update, not a re-allocation. The registrant organization is listed as "United States Department of Defense (DoD)" (org handle USDDD), with contact and technical roles held by DISA-Columbus (Defense Information Systems Agency), address 300 North James Road, Whitehall, OH. Operationally, AS564 is currently dormant: RIPEstat shows zero RIS peers observing any IPv4 or IPv6 announcement (0 of 327 v4 peers, 0 of 322 v6 peers), zero announced prefixes, and CAIDA corroborates with seen=false, cliqueMember=false, and a singleton customer cone (1 ASN, 0 prefixes, 0 addresses). Historically, RIPEstat routing-status records AS564 originating 130.22.16.0/21 (first seen 2017-03-08) through 130.22.225.0/24 (last seen 2021-04-29), consistent with the broader 130.22.0.0/16 DNIC block, before it dropped out of global routing visibility. No PeeringDB record exists for AS564 (peeringdb.com/asn/564 returns HTTP 404), and no notable public abuse signal was found across Spamhaus ASN-DROP, IPQualityScore, Scamalytics, NetworksDB, or NANOG archive searches as of 2026-07-11. A distinct and unrelated 2021 incident (Pentagon squat-space announcements via AS8003/Global Resource Systems LLC, later AS749) involves different DoD-affiliated ASNs and should not be conflated with AS564.

Operator

United States Department of Defense (DoD), org handle USDDD; technical/NOC/abuse role held by DISA-Columbus (300 North James Road, Whitehall, OH 43213) [Confirmed] — https://rdap.arin.net/registry/autnum/564

Country / RIR

US, ARIN [Confirmed] — https://stat.ripe.net/data/abuse-contact-finder/data.json?resource=564 (authoritative_rir: arin)

Allocated

1990-01-16 (ARIN RDAP autnum TOP-LEVEL registration event, not an entity/POC-level decoy date); last changed 2025-09-12 [Confirmed] — https://rdap.arin.net/registry/autnum/564

Org status

active per ARIN RDAP (status: active, last changed 2025-09-12); administratively active but operationally dormant/unrouted since 2021-04-29 [Confirmed] — https://rdap.arin.net/registry/autnum/564

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (abuse/NOC/technical, MIL-HSTMST-ARIN); disa.columbus.ns.mbx.arin-registrations@mail.mil (administrative, REGIS10-ARIN) [Confirmed] — https://rdap.arin.net/registry/autnum/564

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-11 across Spamhaus ASN-DROP, IPQualityScore, Scamalytics, NetworksDB, and NANOG archives [Likely] — https://www.spamhaus.org/blocklists/do-not-route-or-peer/, https://scamalytics.com/ip/isp/dod-network-information-center. Distinct from the unrelated 2021 DoD IP-squatting story involving AS8003/AS749 — not AS564

Network & routing

Network type

U.S. federal government / military network (DoD Network Information Center, DNIC block), not a commercial ISP or hosting provider; currently unrouted [Confirmed] — https://rdap.arin.net/registry/autnum/564, https://bgp.he.net/AS564

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses announced, 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=564, https://api.asrank.caida.org/v2/restful/asns/564

Routing/peering

NOT currently announced — 0 RIS peers seeing it (0/327 v4, 0/322 v6); CAIDA degree total 0 (customer/peer/provider all 0); historically announced 130.22.16.0/21 (first seen 2017-03-08) through 130.22.225.0/24 (last seen 2021-04-29) [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=564. No PeeringDB listing (404)

[Confirmed] — https://www.peeringdb.com/asn/564

RPKI

not assessable — no announced prefixes, so RIPEstat's rpki-validation query was skipped (requires a --prefix parameter); no ROAs to validate [Confirmed] — abstained by design, not fabricated

Notable usage

historically originated DoD-internal address space (130.22.0.0/16 range) under the DNIC numbering scheme administered by DISA; no public/commercial usage or notable customers [Confirmed] — https://stat.ripe.net/data/routing-status/data.json?resource=564

Related ASNs

none confirmed as directly related; AS8003 and AS749 are separate DoD-affiliated ASNs tied to an unrelated 2021 routing event and are explicitly NOT the same as AS564 [Confirmed] — https://seclists.org/nanog/2021/Sep/210

Analyst note

Legacy DoD DNIC-block ASN, administratively active in ARIN's registry but unrouted/dormant since April 2021. No dedicated operator website exists specific to AS564; DISA's general DISN documentation covers all DoD networks collectively, not this ASN individually.