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 AS5600 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS5600\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 'AS5537 - AS5631'
as-block: AS5537 - AS5631
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 'AS5600'
% Abuse contact for 'AS5600' is 'noc@amatisnetworks.com'
aut-num: AS5600
org: ORG-XL9-RIPE
as-name: TCPNET-AS
admin-c: ACF2-RIPE
tech-c: ACF2-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: BNWT-MNT
created: 2002-04-10T09:11:50Z
last-modified: 2025-01-08T17:43:27Z
source: RIPE
organisation: ORG-XL9-RIPE
org-name: BNW TECHNOLOGY LTD
country: GB
reg-nr: 04599510
org-type: LIR
address: 58 Portman Road
address: RG30 1EA
address: Reading
address: UNITED KINGDOM
phone: +44 118 321 9944
fax-no: +44 871 504 5052
abuse-c: AR18017-RIPE
admin-c: ACF2-RIPE
mnt-ref: XIFOS-MNT
mnt-ref: BNWT-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: BNWT-MNT
created: 2005-03-11T06:11:33Z
last-modified: 2026-05-13T07:26:29Z
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 (SHETLAND)