Autonomous system detail

AS530

Not announced

Operated by DNIC-AS-00530 - Headquarters, USAISC.

Summary

// analyst note
Dormant legacy DNIC/DoD ASN, same ERX-transferred gateway series as sibling AS529. allocated_date (1989-09-29) is ARIN RDAP's own autnum TOP-LEVEL registration event, confirmed independently by two research angles; decoy entity-level dates on POC/org sub-entities (e.g. 2009-06-24, 1990-03-26) were correctly excluded.
// security note
NEUTRAL/DATED: no notable public abuse signal found as of 2026-07-10; not in Spamhaus ASN-DROP, NANOG archives, or general BGP hijack trackers.
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: Medium

AS530 is a legacy DNIC (Defense Network Information Center) autonomous system number registered under ARIN to "Headquarters, USAISC" — the U.S. Army Information Systems Command. The registration record itself is a snapshot of 1980s-era Army command structure: USAISC was disestablished and its functions reassigned to U.S. Army Signal Command / CECOM / NETCOM in 1996, yet the ASN record still carries the original command name, a common artifact across old DNIC/DoD ASN allocations that are not actively renamed by successor commands. The registrant address is Fort Huachuca, AZ, with administrative and abuse contact routed through DISA-Columbus in Whitehall, OH. Despite ARIN listing the registration as active, AS530 is currently dark: it announces zero IPv4 and zero IPv6 prefixes, is invisible to all 325 IPv4 and 322 IPv6 RIS route-collector peers, and CAIDA's topology graph has never observed it (seen=false, clique member=false, customer cone limited to the ASN itself with zero prefixes and zero addresses). No upstreams, peers, or IX presences are visible in any routing dataset. No notable public abuse signal was found as of 2026-07-10. This profile — dormant DNIC military ASN, legacy command name, zero routing footprint — closely matches its already-enriched sibling AS529 in the same ERX-transferred gateway series.

Operator / registrant
Headquarters, USAISC (U.S. Army Information Systems Command); registry handle DNIC-AS-00530 [Confirmed] — https://rdap.arin.net/registry/autnum/530
Country / RIR
US, ARIN (DNIC block within IANA 16-bit AS Numbers Registry block 1-1876, "Assigned by ARIN") [Confirmed] — https://stat.ripe.net/AS530
Allocated
1989-09-29 (ARIN RDAP autnum TOP-LEVEL "registration" event — not an entity-level POC/org date); last changed 2011-08-24 (RDAP "last changed" event) [Confirmed, two independent angles agree] — https://rdap.arin.net/registry/autnum/530

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-10 — not in the live Spamhaus ASN-DROP feed, NANOG mailing-list archives, or general BGP hijack/route-leak tracker coverage

[Likely] — https://www.spamhaus.org/drop/asndrop.json

Abuse contact

disa.columbus.ns.mbx.arin-registrations@mail.mil (authoritative RIR: ARIN)

[Confirmed] — https://stat.ripe.net/AS530

Network & routing

Network type / website
not disclosed; PeeringDB network-type field is unset, and as a legacy DoD ASN there is no dedicated operator website or peering-policy page [Unknown] — https://www.peeringdb.com/net/22197
Size / routing status
NOT announced — 0 IPv4 and 0 IPv6 prefixes; 0/325 IPv4 and 0/322 IPv6 RIS peers see any announcement; 0 observed neighbours; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/AS530 , https://asrank.caida.org/asns/530
CAIDA AS rank / topology
rank 79459; seen=false; clique member=false; AS degree total 0 (customer 0, peer 0, provider 0) [Confirmed] — https://asrank.caida.org/asns/530
Peering
PeeringDB record (net id 22197) lists policy "Open," no multiple-locations requirement, no ratio/contract requirement, no IX presences, traffic/ratio/geographic scope all "Not Disclosed" [Confirmed for PeeringDB record; Likely as current operational reality given zero live announcements] — https://www.peeringdb.com/net/22197
RPKI
not assessable — the ASN announces no prefixes, so there is no ROA to validate against [Unknown] — RIPEstat rpki-validation endpoint (skipped: no prefix supplied)
Related ASNs
sibling ASN AS529 (BURTONWOOD-GW1-AS) is in the same legacy, ERX-transferred DNIC/CDOIM gateway series and shares the dormant/unrouted, clean-abuse profile [Likely] — cross-reference to /asn/529/
Organizational status
registration is "active" per ARIN, but the named USAISC command was disestablished/reorganized into U.S. Army Signal Command / CECOM / NETCOM in 1996; the ASN record was never renamed to a successor command
[Confirmed, two independent angles] — https://rdap.arin.net/registry/autnum/530 , https://en.wikipedia.org/wiki/Army_Network_Enterprise_Technology_Command
Location
registrant address Fort Huachuca, AZ 85613; admin/abuse contact at DISA-Columbus, 300 North James Road, Whitehall, OH 43213 [Confirmed] — https://rdap.arin.net/registry/autnum/530
[ 02 ] — Announced prefixes

What this network routes.

0 prefixes total · RIPEstat data · cached, not real-time
// 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.