This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402603
IANA has recorded AS5431 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS5431\n % This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% Information related to 'AS5377 - AS5535'
as-block: AS5377 - AS5535
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2018-11-22T15:27:22Z
last-modified: 2018-11-22T15:27:22Z
source: RIPE
% Information related to 'AS5431'
% Abuse contact for 'AS5431' is 'abuse@free.net'
aut-num: AS5431
as-name: FG-CORE
mp-import: afi ipv4.unicast, ipv6.unicast from AS2895 action pref=10; accept ANY
mp-export: afi ipv4.unicast, ipv6.unicast to AS2895 announce ANY
import-via: afi ipv4.unicast, ipv6.unicast AS8631 from AS-MSKROUTESERVER action pref=100; accept AS-MSKROUTESERVER
export-via: afi ipv4.unicast, ipv6.unicast AS8631 to AS-MSKROUTESERVER announce AS-FGNET
org: ORG-FG2-RIPE
admin-c: DIS3-RIPE
tech-c: FH645-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: FREENET-MNT
created: 1970-01-01T00:00:00Z
last-modified: 2022-07-06T14:11:14Z
source: RIPE
organisation: ORG-FG2-RIPE
org-name: OOO FREEnet Group
country: RU
reg-nr: 1027736009180
org-type: LIR
address: 47, Leninsky prospect
address: 119334
address: Moscow
address: RUSSIAN FEDERATION
phone: +74991354133
admin-c: DIS3-RIPE
admin-c: FH645-RIPE
admin-c: ASM57-RIPE
abuse-c: FRAB1-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: FREENET-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: FREENET-MNT
created: 2004-04-17T11:52:42Z
last-modified: 2026-05-13T07:13:22Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122.1 (ABERDEEN)