AS798

AS798 is a dormant U.S. Army/DoD autonomous system — registered as DNIC-AS-00798 to "Headquarters, USAISC" — that announces zero IPv4 and zero IPv6 prefixes in the global routing table today, with no observed BGP peers or upstreams.

The registrant name, USAISC (U.S. Army Information Systems Command), is a historical designation: that command was inactivated in 1996, and its network-operations mission is generally understood to have passed to today's U.S. Army Network Enterprise Technology Command (NETCOM), headquartered at Fort Huachuca, AZ. ARIN's registration has not been renamed to reflect this, so the live RDAP record still reads USAISC.

ARIN RDAP places the ASN's top-level registration (allocation) event at 1990-12-18 and its last-changed event at 2011-08-02, independently corroborated by bgp.tools, which describes the ASN as allocated under ARIN "since December 1990." Administrative, technical, and abuse contact routes through the DoD Network Information Center at DISA-Columbus, OH, distinct from the Army registrant address at Fort Huachuca, AZ.

Routing data is unanimous across sources: RIPEstat, CAIDA AS Rank, and bgp.he.net all show 0 announced prefixes, 0 peers, and a customer cone limited to the ASN itself. CAIDA's AS rank of 79,459 places it near the bottom of the global ranking, consistent with an ASN that is registered but not currently routed. RPKI status cannot be assessed because there are no announced prefixes and therefore no ROAs to validate.

Operator

Headquarters, USAISC (U.S. Army Information Systems Command; ARIN org handle HEADQU-3); operationally associated with today's U.S. Army Network Enterprise Technology Command (NETCOM), Fort Huachuca, AZ [Confirmed for registrant name; Likely for USAISC→NETCOM succession] — ARIN RDAP autnum 798, en.wikipedia.org/wiki/United_States_Army_Information_Systems_Engineering_Command

Country / RIR

US, ARIN [Confirmed] — rdap.arin.net/registry/autnum/798

Allocated

1990-12-18 (RDAP autnum top-level registration event); last changed 2011-08-02 [Confirmed] — rdap.arin.net/registry/autnum/798, corroborated by bgp.tools/as/798 ("registered and allocated under ARIN since December 1990")

Org status

active (ARIN RDAP top-level autnum status = active) [Confirmed] — rdap.arin.net/registry/autnum/798

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil; DoD Network Information Center (DNIC) / DISA-Columbus, 300 North James Road, Whitehall, OH 43213; registrant address NETC-ANC CONUS TNOSC, Fort Huachuca, AZ 85613 [Confirmed] — rdap.arin.net/registry/autnum/798

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-01 — not in AbuseIPDB, Spamhaus/abuse.ch, IPThreat, or NANOG archives; coverage for lightly-routed DoD ASNs is thin, so weight this as weaker evidence than for a heavily-routed commercial network

Network & routing

Network type

government/military (U.S. Army/DoD); not a commercial ISP, transit, or content network; currently dormant/unannounced [Confirmed] — rdap.arin.net/registry/autnum/798

Size

0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes announced; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses; CAIDA AS rank 79,459 [Confirmed] — stat.ripe.net/AS798, api.asrank.caida.org/v2/restful/asns/798, bgp.he.net/AS798, bgp.tools/as/798

Routing/peering

NOT announced — 0 of 328 RIS peers see IPv4, 0 of 322 see IPv6; CAIDA degree total 0 (customer 0, peer 0, provider 0); no PeeringDB record (peeringdb.com/asn/798 returns HTTP 404, checked live 2026-08-01); no public peering policy found [Confirmed for routing metrics; Unknown for any policy] — stat.ripe.net/AS798, api.asrank.caida.org/v2/restful/asns/798, peeringdb.com/asn/798

RPKI

not assessable — no announced prefixes, so no ROAs exist to validate [Confirmed] — stat.ripe.net/AS798

Notable usage

none independently verified; not currently visible on the global BGP table under this ASN [Likely] — bgp.he.net/AS798

Related ASNs

none confirmed for AS798 specifically; other USAISC/DoD-registered ASNs (e.g. AS747, AS772, AS1463, AS1464, AS1502) share the same contact-record pattern but were not individually verified as related to AS798 [Unknown] — whois.arin.net/rest/poc/REGIS10-ARIN/orgs

Analyst note

A long-allocated (Dec 1990) but currently dormant DoD/U.S. Army ASN. WHOIS/RDAP still name the historical USAISC registrant rather than NETCOM, its likely functional successor; no PeeringDB listing and no visible routing anywhere in the sources checked.