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

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% The objects are in RPSL format.
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% Note: this output has been filtered.
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% Information related to '2a01:c000::/20'

% Abuse contact for '2a01:c000::/20' is 'gestionip.ft@orange.com'

inet6num:       2a01:c000::/20
netname:        FR-TELECOM-20051230
country:        FR
org:            ORG-FT2-RIPE
admin-c:        AB5579-RIPE
admin-c:        ML2808-RIPE
admin-c:        PG5119-RIPE
tech-c:         BRX1-RIPE
status:         ALLOCATED-BY-RIR
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         FT-BRX
mnt-routes:     FT-BRX
created:        2024-07-22T11:04:09Z
last-modified:  2024-07-22T11:04:09Z
source:         RIPE # Filtered

organisation:   ORG-FT2-RIPE
org-name:       Orange S.A.
country:        FR
org-type:       LIR
address:        44 Avenue de la République
address:        92326
address:        Chatillon Cedex
address:        FRANCE
phone:          +33
admin-c:        HC5303-RIPE
admin-c:        ML2808-RIPE
admin-c:        BRX1-RIPE
mnt-ref:        OLEANE-NOC
mnt-ref:        FT-BRX
mnt-ref:        RAIN-TRANSPAC
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         FT-BRX
abuse-c:        BRX1-RIPE
created:        2004-04-17T11:23:51Z
last-modified:  2023-05-02T09:09:20Z
source:         RIPE # Filtered

role:           Local Internet Registry Orange fr.telecom
address:        Orange
address:        111, quai du Président Roosevelt
address:        92130 ISSY-LES-MOULINEAUX
admin-c:        HC5303-RIPE
tech-c:         ML2808-RIPE
tech-c:         LR7754-RIPE
abuse-mailbox:  gestionip.ft@orange.com
nic-hdl:        BRX1-RIPE
mnt-by:         FT-BRX
created:        1970-01-01T00:00:00Z
last-modified:  2023-05-02T09:07:29Z
source:         RIPE # Filtered

person:         Alain Bidron
address:        France Telecom
address:        FT/ ROSI/ ITNPS/ NAD/ EAS
address:        48 rue Camille Desmoulins
address:        92791 ISSY LES MOULINEAUX Cedex
address:        France
phone:          +33 1 57 36 17 24
nic-hdl:        AB5579-RIPE
mnt-by:         FT-BRX
created:        1970-01-01T00:00:00Z
last-modified:  2011-09-22T11:32:33Z
source:         RIPE # Filtered

person:         Marc Lapeyre
address:        Orange France
address:        Orange/OF/DTSI/DTR/RSB/DIP/ICC
phone:          +33
nic-hdl:        ML2808-RIPE
mnt-by:         FT-BRX
created:        1970-01-01T00:00:00Z
last-modified:  2024-03-26T12:04:49Z
source:         RIPE # Filtered

person:         Philippe Gheeraert
address:        Orange France
address:        Orange/OF/DTSI/DTR/RSB/DIP/ICC
phone:          +33
nic-hdl:        PG5119-RIPE
mnt-by:         FT-BRX
created:        2002-05-03T08:06:49Z
last-modified:  2022-09-07T12:21:00Z
source:         RIPE # Filtered

% Information related to '2a01:c000::/20AS5511'

route6:         2a01:c000::/20
descr:          Orange S.A.
origin:         AS5511
mnt-by:         FT-BRX
mnt-routes:     FT-BRX
mnt-routes:     MNT-AS47377
created:        2024-04-30T07:32:03Z
last-modified:  2024-04-30T07:32:03Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (SHETLAND)

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