AS457

AS457 is a legacy autonomous system number registered under ARIN within the block object AFCONC-BLOCK1-AS, which spans a contiguous range from AS379 through AS508 and is assigned to Air Force Systems Networking (org handle 7ESG), a U.S. Air Force / Department of Defense network registration. ARIN issues this range as a single shared block record rather than per-ASN records, so the RDAP autnum lookup for AS457 correctly returns handle "AS379" with startAutnum 379 and endAutnum 508 — this is expected block-object behavior, not a wrong-ASN fetch. The registrant address on file is Maxwell AFB, Montgomery, AL, with abuse/administrative/technical contact routed through a DISA-Columbus mailbox in Whitehall, OH. AS457 shows no current global routing presence: RIPEstat, bgp.he.net, and bgp.tools all agree on zero announced IPv4/IPv6 prefixes, zero observed BGP peers or upstreams, and a CAIDA customer cone limited to itself (1 ASN, 0 prefixes, 0 addresses). Historically, RIPEstat routing-status records a single announced prefix, 131.3.0.0/16, seen from 2002-03-22 to 2003-01-16, after which the ASN went dark and has stayed unrouted through 2026-07-05. As a non-commercial federal network, AS457 has no operator-official website, peering-policy page, or PeeringDB record. No notable public abuse or threat signal was found in Spamhaus, AbuseIPDB, abuse.ch/URLhaus, or NANOG archive searches, consistent with a dormant, low-visibility government-allocated ASN.

Operator

Air Force Systems Networking (org handle 7ESG; block object AFCONC-BLOCK1-AS, ARIN range AS379–AS508) [Confirmed] — https://rdap.arin.net/registry/autnum/457

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/457

Allocated

1989-08-04 (ARIN RDAP autnum TOP-LEVEL registration event for the AFCONC-BLOCK1-AS block, which covers AS457); last changed 2008-06-06 (autnum top-level "last changed" event) [Confirmed] — https://rdap.arin.net/registry/autnum/457

Org status

active per ARIN RDAP status array ["active"] [Confirmed] — https://rdap.arin.net/registry/autnum/457

Contacts

disa.columbus.ns.mbx.arin-registrations@mail.mil (abuse/administrative/technical); registrant org address 501 East Moore Dr., Bldg 884, Rm 1100, Gunther Annex, Maxwell AFB, AL 36114; POC address 300 North James Road, Whitehall, OH 43213 [Confirmed] — https://rdap.arin.net/registry/autnum/457

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-05 in Spamhaus ASN-DROP, AbuseIPDB, abuse.ch/URLhaus, or NANOG mailing-list archives; note this is a search-index check, not a live fetch of the Spamhaus ASN-DROP feed or a direct AbuseIPDB API query

Network & routing

Network type

U.S. federal government / military (Air Force / DoD) internal network block; not a commercial ISP, transit provider, or content network [Confirmed] — https://rdap.arin.net/registry/autnum/457, https://bgp.he.net/AS457

Size

dormant — 0 announced IPv4/IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / CAIDA ASRank / bgp.he.net / bgp.tools (checked 2026-07-05)

Routing/peering

NOT announced — 0 of 325 RIS peers seeing it (v4), 0 of 321 (v6); 0 observed neighbours/upstreams; no PeeringDB record found (404 on both HTML page and API) [Confirmed] — RIPEstat routing-status, https://www.peeringdb.com/asn/457

RPKI

not assessable — RIPEstat RPKI validation was structurally skipped because no announced prefix exists to validate ("no --prefix supplied") [Unknown, correctly abstained] — RIPEstat rpki-validation

Notable usage

historically announced 131.3.0.0/16 from 2002-03-22 to 2003-01-16 (RIPEstat first_seen/last_seen), then went dark; no operator-official content identifying a specific present-day use; contextual (not confirmed-by-number) association with the 754th Electronic Systems Group / Gunter Annex per secondary Air Force sources [Likely for historical prefix; Unknown for present-day usage] — RIPEstat routing-status, https://www.hanscom.af.mil/News/Article-Display/Article/381978/754-elsg-division-shapes-supports-it-purchases-across-dod/

Related ASNs

part of the shared AFCONC-BLOCK1-AS block object, ARIN range AS379–AS508 [Confirmed] — https://rdap.arin.net/registry/autnum/457

Analyst note

legacy DoD/Air Force ASN within a shared multi-ASN block record; currently unrouted/dark with no operator-official public presence. The RDAP handle "AS379" in the raw response is the block object's own handle, not a lookup error — startAutnum/endAutnum (379/508) confirm AS457 is covered by this record.