% 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://docs.db.ripe.net/terms-conditions.html

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

% Information related to 'AS28699 - AS28912'

as-block:       AS28699 - AS28912
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:        2018-11-22T15:27:31Z
last-modified:  2018-11-22T15:27:31Z
source:         RIPE

% Information related to 'AS28748'

% Abuse contact for 'AS28748' is 'abuse@alphacron.de'

aut-num:        AS28748
as-name:        ALPHACRON-AS
descr:          AlphaCron Datensysteme
descr:          DE
org:            ORG-MPD1-RIPE
member-of:      AS-ALPHACRON
remarks:
remarks:        *** upstream ***
remarks:
import:         from AS3320 accept ANY
export:         to AS3320 announce AS-ALPHACRON
remarks:
remarks:        *** customers ***
remarks:
import:         from AS203761 accept AS203761
export:         to AS203761 announce ANY
import:         from AS213087 accept AS213087
export:         to AS213087 announce ANY
remarks:
remarks:        *** IX ***
remarks:
import:         from AS6695 accept AS-DECIX
export:         to AS6695 announce AS-ALPHACRON
remarks:
remarks:        *** direct peerings @DE-CIX ***
remarks:
import:         from AS42 accept AS-PCH
export:         to AS42 announce AS-ALPHACRON
import:         from AS714 accept AS-APPLE
export:         to AS714 announce AS-ALPHACRON
import:         from AS2119 accept AS-TELENOR
export:         to AS2119 announce AS-ALPHACRON
import:         from AS2484 accept AS-AFNIC
export:         to AS2484 announce AS-ALPHACRON
import:         from AS3856 accept AS-PCH
export:         to AS3856 announce AS-ALPHACRON
import:         from AS6805 accept AS-TDDE
export:         to AS6805 announce AS-ALPHACRON
import:         from AS6939 accept AS-HURRICANE
export:         to AS6939 announce AS-ALPHACRON
import:         from AS8075 accept AS-MICROSOFT
export:         to AS8075 announce AS-ALPHACRON
import:         from AS8966 accept AS-EMIX
export:         to AS8966 announce AS-ALPHACRON
import:         from AS15169 accept AS-GOOGLE
export:         to AS15169 announce AS-ALPHACRON
import:         from AS16509 accept AS-AMAZON
export:         to AS16509 announce AS-ALPHACRON
import:         from AS20940 accept AS-AKAMAI
export:         to AS20940 announce AS-ALPHACRON
import:         from AS24953 accept AS-24953
export:         to AS24953 announce AS-ALPHACRON
import:         from AS29838 accept AS-AMC
export:         to AS29838 announce AS-ALPHACRON
import:         from AS30844 accept AS-LIQUID
export:         to AS30844 announce AS-ALPHACRON
import:         from AS31103 accept AS-KEYWEB
export:         to AS31103 announce AS-ALPHACRON
import:         from AS45352 accept AS-SET-IPSERVERONE
export:         to AS45352 announce AS-ALPHACRON
import:         from AS64096 accept AS64096
export:         to AS64096 announce AS-ALPHACRON
import:         from AS199599 accept AS-CIREX
export:         to AS199599 announce AS-ALPHACRON
remarks:
remarks:        *** private peerings ***
remarks:
import:         from AS25394 accept AS-MK-NETZDIENSTE
export:         to AS25394 announce AS-ALPHACRON
admin-c:        ACDS-RIPE
tech-c:         ACDS-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MP-MNT
created:        2003-02-13T12:44:58Z
last-modified:  2023-05-21T19:44:50Z
source:         RIPE # Filtered

organisation:   ORG-MPD1-RIPE
org-name:       Marc Pauls (AlphaCron Datensysteme)
country:        DE
org-type:       LIR
address:        Wandersleber Strasse 1a
address:        99192
address:        Apfelstaedt
address:        GERMANY
phone:          +49 36202 759994
fax-no:         +49 36202 759997
admin-c:        MP800-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MP-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MP-MNT
abuse-c:        ACDS-RIPE
created:        2010-03-16T14:00:06Z
last-modified:  2020-12-16T12:55:06Z
source:         RIPE # Filtered

role:           AlphaCron Datensysteme
address:        Wandersleber Strasse 1a
address:        99192 Apfelstaedt
address:        Germany
phone:          +49 36202 759994
fax-no:         +49 36202 759997
admin-c:        MP800-RIPE
tech-c:         MP800-RIPE
tech-c:         UP800-RIPE
nic-hdl:        ACDS-RIPE
abuse-mailbox:  abuse@alphacron.de
mnt-by:         MP-MNT
created:        2003-01-29T19:16:06Z
last-modified:  2013-03-27T10:24:13Z
source:         RIPE # Filtered

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

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