% 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 'AS44170 - AS45055'

as-block:       AS44170 - AS45055
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:        2023-06-14T15:02:10Z
last-modified:  2023-06-14T15:02:10Z
source:         RIPE

% Information related to 'AS45008'

% Abuse contact for 'AS45008' is 'soc@aexp.com'

aut-num:        AS45008
as-name:        Amex-EMEA
org:            ORG-AETR1-RIPE
import:         from AS702 accept ANY
import:         from AS2856 accept ANY
export:         to AS702 announce AS45008
export:         to AS2856 announce AS45008
admin-c:        GRS20-RIPE
tech-c:         GRS20-RIPE
status:         ASSIGNED
mnt-by:         AMEX-GRS
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         AXP-DDI
mnt-by:         AMEX-GRS
created:        2008-04-18T09:23:34Z
last-modified:  2018-09-04T10:32:00Z
source:         RIPE # Filtered

organisation:   ORG-AETR1-RIPE
org-name:       American Express Travel Related Services Company, Inc
country:        US
org-type:       LIR
address:        3202 West Behrend Drive
address:        85027
address:        Phoenix, AZ
address:        UNITED STATES
phone:          +52 55 7494 7672
abuse-c:        AR18030-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AXP-DDI
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AXP-DDI
created:        2013-08-01T10:57:33Z
last-modified:  2022-11-29T17:09:50Z
source:         RIPE # Filtered

person:         Graham R Salter
address:        American Express Europe Ltd, Amex House, Edward Street, Brighton, BN88 1AH England
phone:          +44 1273 714508
nic-hdl:        GRS20-RIPE
mnt-by:         AMEX-GRS
created:        2008-03-04T19:10:55Z
last-modified:  2012-05-03T09:56:13Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.112 (SHETLAND)

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