% APNIC found the following authoritative answer from: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS12456 - AS12555'

as-block:       AS12456 - AS12555
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:        2018-11-22T15:27:24Z
last-modified:  2018-11-22T15:27:24Z
source:         RIPE

% Information related to 'AS12519'

% Abuse contact for 'AS12519' is 'hostmaster@fastnet.co.uk'

aut-num:        AS12519
as-name:        FASTNETUK
org:            ORG-FIL1-RIPE
import:         from AS9057 action pref=100; accept ANY
import:         from AS1755 action pref=100; accept ANY
import:         from AS2818 action pref=100; accept AS-BBC
import:         from AS3328 action pref=100; accept ANY
import:         from AS4513 action pref=100; accept AS-GLOBIX
import:         from AS5412 action pref=100; accept ANY
import:         from AS5597 action pref=100; accept AS-INTENSIVE
import:         from AS5631 action pref=100; accept AS-IPCENTA
import:         from AS6461 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS6728 action pref=100; accept AS-NILDRAM
import:         from AS6818 action pref=100; accept AS-IPCENTAUK
import:         from AS6847 action pref=100; accept AS-CERBERLONAP
import:         from AS8330 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS8366 action pref=100; accept AS-CIX
import:         from AS8401 action pref=100; accept AS-MAILBOX
import:         from AS8421 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS8553 action pref=100; accept AS-GEMSOFT
import:         from AS8575 action pref=100; accept AS-WINWEB
import:         from AS8586 action pref=100; accept AS-REDNET
import:         from AS8622 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS39530 action pref=100; accept AS-PARKER AND NOT {0.0.0.0/0}
import:         from AS8625 action pref=100; accept AS-NETFORCE
import:         from AS8686 action pref=100; accept AS-SYSONLINE
import:         from AS8689 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS8871 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS8910 action pref=100; accept AS8910
import:         from AS8977 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS9105 action pref=100; accept ANY
import:         from AS12390 action pref=100; accept AS-KINGSTONUK
import:         from AS12621 action pref=100; accept AS-ONEANET
import:         from AS12787 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS15409 action pref=100; accept ANY AND NOT {0.0.0.0/0}
import:         from AS15758 action pref=100; accept ANY AND NOT {0.0.0.0/0}
export:         to AS9057 announce AS12519
export:         to AS1755 announce AS12519
export:         to AS2818 announce AS-FASTNET
export:         to AS3328 announce AS12519
export:         to AS4513 announce AS-FASTNET
export:         to AS5412 announce ANY
export:         to AS25312 announce ANY
export:         to AS5597 announce AS-FASTNET
export:         to AS5631 announce AS-FASTNET
export:         to AS6461 announce AS-FASTNET
export:         to AS6728 announce AS-FASTNET
export:         to AS6818 announce AS-FASTNET
export:         to AS6847 announce AS-FASTNET
export:         to AS8330 announce AS-FASTNET
export:         to AS8366 announce AS-FASTNET
export:         to AS8401 announce AS-FASTNET
export:         to AS8421 announce AS-FASTNET
export:         to AS8553 announce AS-FASTNET
export:         to AS8575 announce AS-FASTNET
export:         to AS8586 announce AS-FASTNET
export:         to AS8622 announce AS-FASTNET
export:         to AS8625 announce AS-FASTNET
export:         to AS8686 announce AS-FASTNET
export:         to AS8689 announce AS-FASTNET
export:         to AS8871 announce AS-FASTNET
export:         to AS8910 announce AS-FASTNET
export:         to AS8977 announce AS-FASTNET
export:         to AS12390 announce AS-FASTNET
export:         to AS12621 announce AS-FASTNET
export:         to AS12787 announce AS-FASTNET
export:         to AS15409 announce AS-FASTNET
export:         to AS15758 announce AS-FASTNET
export:         to AS39530 announce AS-FASTNET
admin-c:        JP9637-RIPE
tech-c:         JP9637-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         FN-RIPE
created:        2002-06-12T14:03:11Z
last-modified:  2019-06-11T09:40:42Z
source:         RIPE # Filtered

organisation:   ORG-FIL1-RIPE
org-name:       FastNet International Ltd
country:        GB
org-type:       LIR
address:        Shaftesbury Court, 95 Ditchling Road
address:        BN1 4ST
address:        Brighton
address:        United Kingdom
phone:          +44 1273 662888
fax-no:         +44 1273 621631
abuse-c:        AR17647-RIPE
mnt-ref:        FN-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         FN-RIPE
admin-c:        NP1213-RIPE
admin-c:        JP9637-RIPE
created:        2004-04-17T12:14:37Z
last-modified:  2020-12-16T13:18:52Z
source:         RIPE # Filtered

person:         James Parker
address:        Fastnet International
address:        Shaftesbury Court
address:        95, Ditchling Road
address:        Brighton
address:        BN1 4ST
address:        England
phone:          +44 1273 688088
fax-no:         +44 1273 621631
nic-hdl:        JP9637-RIPE
mnt-by:         FN-RIPE
remarks:        ########################################################
remarks:        #Please send all abuse reports to abuse@fastnet.co.uk #
remarks:        ########################################################
created:        1970-01-01T00:00:00Z
last-modified:  2013-08-22T09:11:08Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.111 (DEXTER)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain