AS588

AS588 is a legacy autonomous system number registered under ARIN, on record since 2002-10-15, to "Headquarters, USAISC" (OrgId HEADQU-3) — historically the U.S. Army Information Systems Command. The ARIN as-name field reads "DIRECTRON," a literal registry label with no documented explanation elsewhere; it should not be read as an operator identity. The registrant address is Fort Huachuca, Arizona, while the current technical, administrative, and abuse contact routes to a DISA-Columbus mailbox in Whitehall, Ohio, on the mail.mil domain, suggesting day-to-day custody has shifted toward the Defense Information Systems Agency even though no source explicitly names DISA the operator of record. A secondary source reports USAISC was realigned under Army CECOM in 1996; a separate source instead describes a 1996 re-designation as USASC — the two accounts conflict and neither is corroborated by a primary Army document, so operator lineage past 1996 stays uncertain. Operationally, AS588 is dormant: every routing source checked (RIPEstat, bgp.he.net, CAIDA) agrees on zero announced IPv4 and IPv6 prefixes, zero observed BGP neighbors, and a singleton customer cone. No PeeringDB profile exists, and no notable public abuse signal was found in Spamhaus, AbuseIPDB-adjacent context, or NANOG/seclists.org archives as of this research.

Operator (ARIN OrgName)

Headquarters, USAISC (OrgId HEADQU-3; U.S. Army Information Systems Command); registrant address Fort Huachuca, AZ [Confirmed]. Current tech/admin/abuse contact routes to a DISA-Columbus mailbox (Whitehall, OH, mail.mil) — operational custody appears shifted toward DISA but this is not explicitly stated by any source

[Likely] — https://whois.arin.net/rest/asn/AS588

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/588

Allocated

2002-10-15 (ARIN RDAP autnum TOP-LEVEL registration event, cross-confirmed by three independent angles); last changed 2013-01-24. Nested entity-level dates (REGIS10-ARIN 2009-06-24; HEADQU-3 registrant entity 1990-03-26) correctly excluded — those are contact/entity records, not the autnum's own registration

[Confirmed] — https://rdap.arin.net/registry/autnum/588

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil (abuse/tech/admin, via REGIS10-ARIN) [Confirmed] — https://rdap.arin.net/registry/autnum/588

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-11 in Spamhaus context, general threat-intel search, or NANOG/seclists.org archives; consistent with an ASN presenting no live attack surface

Network & routing

Network type

U.S. federal government / U.S. Army-DoD network; currently dormant [Likely] — https://whois.arin.net/rest/asn/AS588

Size

dormant — 0 IPv4 and 0 IPv6 prefixes announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses; CAIDA AS rank 79,459 [Confirmed] — https://bgp.he.net/AS588, https://asrank.caida.org/asns/588

Routing/peering

not announced — 0/325 v4 and 0/322 v6 RIS peers seeing it, 0 observed neighbors, no upstreams; no PeeringDB profile exists (peeringdb.com/asn/588 returns 404), so peering policy is unpublished [Confirmed] — https://stat.ripe.net/AS588, https://www.peeringdb.com/asn/588

RPKI

not assessable — no announced prefixes, so no ROAs to validate; RIPEstat rpki-validation was skipped (requires a prefix) [Unknown] — https://stat.ripe.net/AS588

Geo footprint

US (Fort Huachuca, AZ registrant; Whitehall, OH tech/abuse contact; CAIDA country=US). One single-source note (IPinfo) lists a Frankfurt gateway label (FRANKFRT-GW1) not corroborated elsewhere [Confirmed for US; Likely/single-source for Frankfurt gateway] — https://rdap.arin.net/registry/autnum/588, https://ipinfo.io/AS588

Notable usage / status

registry status "active," but the ASN itself shows zero live route announcements — a registered-but-dormant record, not a withdrawn one [Confirmed] — https://bgp.he.net/AS588

Related ASNs

none identified by any angle [Unknown]

ASN / as-name

AS588 / "DIRECTRON" (literal ARIN as-name field; not a company identity — origin of the label undocumented) [Confirmed] — https://rdap.arin.net/registry/autnum/588

Post-1996 lineage

conflicting secondary claims — one source says USAISC realigned under Army CECOM effective 1996-10-01; another says it was re-designated USASC in 1996. Neither is a primary Army source; stated as an open range, not resolved [Likely, conflicting] — https://www.acronymfinder.com/United-States-Army-Information-Systems-Command-(defunct;-realigned-as-a-subordinate-command-of-the-U.S.-Army-Communications_Electronics-Command-as-of-1-October-1996)-(USAISC).html

Analyst note

Dormant legacy DoD/Army ASN with an unexplained "DIRECTRON" as-name label; post-1996 organizational lineage is genuinely contested between two secondary sources and left as an open range rather than resolved. Core registry facts (allocation date, dormancy, zero abuse signal) are well cross-confirmed.