AS388

AS388 is not an individually delegated autonomous system number: it falls inside a single contiguous ARIN registration, AFCONC-BLOCK1-AS, which covers the range AS379–AS508 under one autnum object (RDAP handle AS379). Every live query to rdap.arin.net/registry/autnum/388 resolves to that block-header record — this is ARIN's block-range behavior for legacy DoD AS space, not a caching bug — so the registrant, dates, and contacts recorded here are the block's. The registrant is Air Force Systems Networking (ARIN Org handle 7ESG) at 501 East Moore Dr., Bldg 884 Rm 1100, Gunther Annex, Maxwell AFB, AL, with administrative, technical, and abuse operations run by DISA-Columbus (Defense Information Systems Agency) at 300 North James Road, Whitehall, OH, and an abuse contact of disa.columbus.ns.mbx.arin-registrations@mail.mil. The block's ARIN registration date, read from the autnum object's top-level events[] (eventAction=registration), is 1989-08-04; the record was last changed 2008-06-06. Operationally AS388 is dark: RIPEstat reports announced=false, zero IPv4 and zero IPv6 prefixes, and zero RIS peers seeing it (0/323 v4, 0/321 v6), and bgp.he.net / bgp.tools independently agree on zero announced prefixes and zero observed BGP peers as of 2026-07-02. It is allocated but not visible in the global routing table — consistent with a reserved sub-block held for internal DoD numbering rather than an actively routed network. No notable public abuse signal was found as of 2026-07-02 (no Spamhaus, NANOG, or AbuseIPDB hits; CleanTalk's per-ASN page returned only empty/placeholder data), which should be read as "no data / unrouted," not a positive clean-reputation signal for an active operator. CAIDA AS-rank and customer-cone data were unavailable (lookup timed out) and are left null rather than guessed.

Operator

Air Force Systems Networking (U.S. Department of Defense / U.S. Air Force); ARIN registrant Org handle 7ESG; admin/tech/abuse operations by DISA-Columbus (Defense Information Systems Agency)

[Confirmed] — https://rdap.arin.net/registry/autnum/388 (resolves to AFCONC-BLOCK1-AS / handle AS379), https://bgp.tools/as/388

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), https://rdap.arin.net/registry/autnum/388

Allocated

1989-08-04 (ARIN RDAP autnum TOP-LEVEL registration event for the AFCONC-BLOCK1-AS block AS379–508, within which AS388 falls; the nested entity dates — REGIS10-ARIN 2009-06-24 and 7ESG 2008-06-05 — are decoys and were excluded); last changed 2008-06-06

[Confirmed] — https://rdap.arin.net/registry/autnum/388 , corroborated https://whois.ipip.net/AS388 , https://bgp.he.net/AS388

Org status

active per ARIN block status (status: active on the AFCONC-BLOCK1-AS autnum record); U.S. DoD / Air Force allocation; registrant Air Force Systems Networking at Maxwell AFB, AL [Confirmed] — https://rdap.arin.net/registry/autnum/388

Website

Unknown / not applicable — DoD/Air Force internal ASN space administered via DISA-Columbus; no commercial operator, peering, or IR page exists for this ASN (the numerically similar 388th Fighter Wing site is an unrelated coincidence, not this block's operator page)

[Confirmed] — https://www.388fw.acc.af.mil/ (unrelated)

IANA Reference

(blank — no IANA RFC reference applicable to an ASN allocation; not fabricated)

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil (abuse/admin/tech, DISA-Columbus); registrant Air Force Systems Networking, 501 East Moore Dr., Bldg 884 Rm 1100, Gunther Annex, Maxwell AFB, AL 36114; admin/tech at 300 North James Road, Whitehall, OH 43213

[Confirmed] — https://rdap.arin.net/registry/autnum/388 , RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-02 — no Spamhaus, NANOG, or AbuseIPDB listings surfaced for AS388; CleanTalk's per-ASN page returned empty/placeholder data (no populated record). Treat this null as expected/uninformative (unrouted sub-block), NOT a positive clean-reputation signal for an active operator [Likely] — https://bgp.he.net/AS388 , https://cleantalk.org/blacklists/as388 , https://www.spamhaus.org/blocklists/do-not-route-or-peer/

Network & routing

Network type

U.S. government / military internal ASN space; AS388 is a sub-block of the DoD-registered AFCONC-BLOCK1-AS range (AS379–508), not a commercial ISP, content, or enterprise network [Confirmed] — https://whois.ipip.net/AS388 , https://bgp.tools/as/388

Size

dark — 0 IPv4 prefixes / 0 IPv4 addresses and 0 IPv6 prefixes announced; announced=false per RIPEstat as-overview [Confirmed] — RIPEstat routing-status / announced-prefixes (2026-07-02), https://bgp.he.net/AS388

Routing/peering

NOT announced — RIPEstat routing-status shows observed_neighbours=0 and 0 RIS peers seeing it (0/323 v4, 0/321 v6); bgp.he.net and bgp.tools agree on 0 announced prefixes and 0 observed peers; no upstreams or peers visible in any source [Confirmed] — RIPEstat, https://bgp.he.net/AS388 , https://bgp.tools/as/388. No PeeringDB network record exists for AS388 specifically

[Confirmed] — https://www.peeringdb.com/org/20118

RPKI

not assessable — AS388 announces no prefixes, so there are no ROAs to validate (RIPEstat rpki-validation skipped: no prefix supplied) [Confirmed] — RIPEstat rpki-validation

AS rank / customer cone

Unknown — CAIDA lookup timed out in this pass and was not re-fetched; left null rather than estimated [Unknown]

Notable usage

none identified — no active BGP announcements, consistent with a reserved/unused portion of the AFCONC-BLOCK1-AS block held by the Air Force for internal DoD network numbering [Confirmed for zero-announcement fact] — https://bgp.tools/as/388 , https://bgp.he.net/AS388

Analyst note

AS388 has no per-ASN RDAP record — ARIN registers AS379–508 as one contiguous block (AFCONC-BLOCK1-AS, handle AS379), so autnum/388 returns the block header. All registry facts (registrant, 1989-08-04 allocation, DISA contact) are the block's and apply to AS388 as a member of the range. The ASN is dark (0 announcements) across all consulted routing sources.