AS475
Operated by AFCONC-BLOCK1-AS - Air Force Systems Networking.
Summary
- // analyst note
- AS475 is part of a contiguous ARIN block registration (AS379–AS508) rather than an individually numbered autnum object, so the block's RDAP top-level registration/last-changed events (1989-08-04 / 2008-06-06) are recorded as AS475's allocated_date/last_updated per first-party RIR fact rules. Entity-level dates (REGIS10-ARIN, org 7ESG) were excluded as decoys. Currently dormant since 2013 across all routing sources consulted.
- // security note
- NEUTRAL/DATED: no notable public abuse signal found as of 2026-07-10; Scamalytics fraud-risk score 0/100 for the associated ISP; no NANOG hijack/abuse threads or threat-feed listings located in this search pass (evidence gap, not a confirmed clean list).
About this ASN.
AS475 sits inside a contiguous ARIN autnum block, AS379–AS508 ("AFCONC-BLOCK1-AS"), registered to Air Force Systems Networking (ARIN org handle 7ESG) — a U.S. Air Force / Department of Defense legacy network associated with the 754th Electronic Systems Group and based at Maxwell AFB, Gunter Annex, Alabama. Because the block is registered as a single contiguous range rather than as individually dated autnum objects, the top-level RDAP registration event — 1989-08-04, last changed 2008-06-06 — is the first-party registry date that applies to AS475. Administrative, abuse, and technical contact for the block routes through DISA-Columbus in Whitehall, Ohio, a common pattern for DoD legacy resource assignments. Operationally, AS475 is dormant: it has not been visible in the global BGP routing table since 2013 (RIPEstat last_seen 2013-09-30, prefix 131.16.245.0/24; historical first_seen 2001-09-26, prefix 132.32.0.0/16), carries a CAIDA AS Rank of 79,459, is marked unseen and non-clique, and has a trivial customer cone (1 ASN, 0 prefixes, 0 addresses) with zero observed neighbours. RPKI posture is not assessable because there are no currently announced prefixes to validate. Security review found no notable public abuse signal: Scamalytics rates the associated ISP a 0/100 fraud-risk score (a commercial signal, not an authoritative incident record), and no NANOG hijack/abuse threads or threat-feed listings surfaced in this search pass — an evidence gap, not a confirmed clean bill. One unresolved discrepancy is flagged rather than silently reconciled: bgp.he.net cites a historical prefix (178.248.8.0/21) and a live IPv4 peer (AS197083, K2 atmitec s.r.o.) that conflict with RIPEstat's dormancy data.
- Operator
- Air Force Systems Networking (U.S. Air Force / DoD, 754th Electronic Systems Group; ARIN org handle 7ESG) [Confirmed] — https://rdap.arin.net/registry/autnum/475, https://whois.arin.net/rest/org/7ESG.html
- Country / RIR
- US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/475
- Allocated
- 1989-08-04 (ARIN RDAP autnum top-level registration event for the AS379–AS508 block; NOT an IEEE date); last changed 2008-06-06 [Confirmed] — https://rdap.arin.net/registry/autnum/475
- Org status
- ARIN org record (7ESG) is active/maintained (last updated 2025-03-13) even though AS475 itself is unrouted/dormant [Confirmed] — https://whois.arin.net/rest/org/7ESG.html
- Operator website / official page
- none found — no af.mil network-operations page or dedicated IR/peering page located [Unknown]
- IANA reference
- none applicable/found; left blank [Unknown]
Security/abuse context (NEUTRAL, DATED)
no notable public abuse signal found as of 2026-07-10; Scamalytics rates the ISP 0/100 fraud risk across ~962,048 tracked IPs (commercial signal, not an authoritative incident record); no NANOG hijack/abuse threads found; no listings surfaced on major threat/abuse feeds in this search pass (search-limited null result, not a verified clean bill)
Network & routing
- Network type
- U.S. federal government / military (DoD/USAF) legacy network block, not a commercial operator [Confirmed] — https://rdap.arin.net/registry/autnum/475, https://whois.arin.net/rest/org/7ESG.html
- Size / routing status
- dormant — 0 IPv4/IPv6 prefixes currently announced; not visible in the global routing table since 2013-06-01 (bgp.he.net) / last_seen 2013-09-30 prefix 131.16.245.0/24 (RIPEstat); historically first seen 2001-09-26 announcing 132.32.0.0/16[Confirmed] — https://stat.ripe.net/AS475, https://bgp.he.net/AS475
- Customer cone / CAIDA
- AS Rank 79,459; seen=false; clique member=false; cone = 1 ASN (itself), 0 prefixes, 0 addresses; degree total 0 [Confirmed] — https://asrank.caida.org/asns/475
- Peering
- no live upstreams or peers (observed_neighbours=0, ASN unannounced); PeeringDB org profile (id 20118) exists with no peering-policy text or IX listed [Unknown for policy] — https://stat.ripe.net/AS475, https://www.peeringdb.com/org/20118
- RPKI
- not assessable — AS475 announces no prefixes, so there are no ROAs to validate [Confirmed] — https://stat.ripe.net/AS475
- Block registration
- AS475 falls within a single contiguous ARIN block object (handle AS379, startAutnum 379, endAutnum 508, name "AFCONC-BLOCK1-AS") rather than having its own individually dated autnum record [Confirmed] — https://rdap.arin.net/registry/autnum/475
- Registered address
- 501 East Moore Drive, Building 884, Room 1100, Gunther Annex, Maxwell AFB, AL 36114, United States [Confirmed] — https://whois.arin.net/rest/org/7ESG.html
- Admin/abuse/tech contact
- REGIS10-ARIN (DISA-Columbus, 300 North James Road, Whitehall, OH 43213), disa.columbus.ns.mbx.arin-registrations@mail.mil, +1-844-347-2457 ext2 [Confirmed] — https://rdap.arin.net/registry/autnum/475
- Peer-data discrepancy
- bgp.he.net separately reports a historical prefix 178.248.8.0/21 and one IPv4 peer AS197083 (K2 atmitec s.r.o., Czech Republic), which conflict with the ASN's confirmed unannounced/dormant status since 2013 — flagged as an unresolved, low-confidence artifact rather than reconciled[Unknown] — https://bgp.he.net/AS475
- Analyst note
- Legacy DoD/USAF block registered 1989, dormant in global BGP since 2013, clean commercial reputation signal, minor unresolved bgp.he.net peer/prefix discrepancy noted but not adopted into the JSON.