AS430

AS430 is a legacy autonomous system number registered under ARIN as part of the AFCONC-BLOCK1-AS block, a contiguous pre-CIDR-era allocation spanning AS379 through AS508. Its registrant is Air Force Systems Networking (ARIN handle 7ESG, Maxwell AFB, Alabama), and its administrative, technical, and abuse contact is DISA-Columbus (Defense Information Systems Agency, Whitehall, Ohio) — marking AS430 as a U.S. Department of Defense / U.S. Air Force allocation rather than a commercial ISP, hosting, or content network. A quirk worth flagging: an RDAP lookup for AS430 resolves to the shared parent block object whose top-level handle field literally reads "AS379" and whose startAutnum/endAutnum span 379–508. This is normal ARIN block-record behavior — one RDAP object serves the whole contiguous range — not evidence of a wrong record; the name "AFCONC-BLOCK1-AS" and CAIDA's own asn:430/asnName:AFCONC-BLOCK1-AS confirm the match. The key triage point is that AS430 is effectively dormant: every routing source consulted (RIPEstat routing-status, CAIDA AS Rank) agrees it announces zero IPv4 and zero IPv6 prefixes, is seen by 0 of 324 RIS peers in IPv4 and 0 of 320 in IPv6, has zero observed neighbours, and carries a CAIDA customer cone of just itself (1 ASN, 0 prefixes, 0 addresses). Its CAIDA AS rank of 79,459 sits near the bottom of the global ranking, reflecting complete routing inactivity. RPKI posture is not assessable because there are no active originations and therefore no ROAs to validate. No notable public abuse signal was found as of 2026-07-02 — not in Spamhaus (SBL/XBL/DROP/ASN-DROP), NANOG archives, Reddit, or general threat-intel coverage — consistent with a clean, dormant legacy government allocation.

Operator

Air Force Systems Networking (ARIN registrant org handle 7ESG, 501 East Moore Dr., Bldg 884 Rm 1100 Gunther Annex, Maxwell AFB, AL 36114, US); administered by DISA-Columbus [Confirmed] — ARIN RDAP autnum/430

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin); ARIN RDAP autnum/430

Allocated

1989-08-04 (ARIN RDAP top-level autnum registration event for the AFCONC-BLOCK1-AS block record into which AS430 resolves — a first-party RIR fact, NOT an IEEE date); last changed 2008-06-06 [Confirmed] — ARIN RDAP autnum top-level events[]

Org status

active per ARIN RDAP registry status (registrant org 7ESG); operational routing status appears dormant per third-party BGP data, with no operator-official confirmation either way [Confirmed (registry); Unknown (operational)] — ARIN RDAP autnum/430

Contacts

abuse/admin/tech DISA-Columbus, 300 North James Road, Whitehall, OH 43213, US; email disa.columbus.ns.mbx.arin-registrations@mail.mil; tel +1-844-347-2457 ext2 (handle REGIS10-ARIN) [Confirmed] — ARIN RDAP autnum/430, whois.arin.net/rest/poc/REGIS10-ARIN

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — not in Spamhaus (SBL/XBL/DROP/ASN-DROP), NANOG archives, Reddit, or general threat-intel/news; dormant/unrouted legacy USAF/DoD allocation

Network & routing

Network type

U.S. government / military network (Department of Defense / U.S. Air Force), administered by DISA; not a commercial ISP, hosting, or content network [Confirmed] — ARIN RDAP autnum/430

Size

dormant — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / CAIDA AS Rank (2026-07)

Routing/peering

NOT announced — 0 RIS peers seeing it (0/324 v4, 0/320 v6); CAIDA degree total 0 (customer 0, peer 0, provider 0); 0 observed neighbours; no upstreams or peers visible in any source [Confirmed] — RIPEstat routing-status, CAIDA asrank.caida.org/asns/430

Peering policy

none published; PeeringDB has no AS430 network record (peeringdb.com/asn/430 returns 404) and no populated policy field [Confirmed-absence] — peeringdb.com/asn/430

RPKI

not assessable — AS430 announces no prefixes, so there are no ROAs to validate; RIPEstat rpki-validation was skipped (no prefix supplied) [Unknown] — RIPEstat rpki-validation

Notable usage

none documented on any operator-official source; no dedicated about/peering/IR page exists for AS430 or AFCONC-BLOCK1-AS. Third-party BGP data (not operator-official) shows the ASN dormant/unrouted [Confirmed-absence; third-party observation] — bgp.he.net/AS430, bgp.tools/as/430

Related ASNs

sibling within-block numbers AS379–AS508 (AFCONC-BLOCK1-AS), same registrant 7ESG / DISA-Columbus administration [Confirmed for block range] — ARIN RDAP autnum/430 (startAutnum 379, endAutnum 508)

Analyst note

Encountered as a dormant legacy DoD ASN whose RDAP resolves to the shared parent block object (handle field reads "AS379", range 379–508) — an ARIN block-record artifact, not a wrong-record signal. Registrant is Air Force Systems Networking; live routing presence is nil. Clean, inactive ASN.