% 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 'AS21243 - AS21270'

as-block:       AS21243 - AS21270
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:        2018-11-22T15:27:27Z
last-modified:  2018-11-22T15:27:27Z
source:         RIPE

% Information related to 'AS21250'

% Abuse contact for 'AS21250' is 'abuse@bahnhof.net'

aut-num:        AS21250
org:            ORG-BIA1-RIPE
as-name:        BAHNHOF
descr:          Former Tyfon Svenska AB - Sweden
descr:          Broadband and Telephony Operator
remarks:        --- TRANSIT IPv4 ---
import:         from AS8473  action pref=80 ; accept ANY
export:         to   AS8473  announce AS-TYFON
import:         from AS16150 action pref=80 ; accept ANY
export:         to   AS16150 announce AS-TYFON
remarks:        --- TRANSIT IPv6 ---
mp-import:      afi ipv6.unicast from AS8473  action pref=80  ; accept ANY
mp-export:      afi ipv6.unicast to   AS8473  announce AS-TYFON
mp-import:      afi ipv6.unicast from AS16150 action pref=80  ; accept ANY
mp-export:      afi ipv6.unicast to   AS16150 announce AS-TYFON
remarks:        ---
admin-c:        TNOC1-RIPE
tech-c:         TNOC1-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
remarks:        +- Peering Info -------------------------------------------+
remarks:        | - Route flap damping policy conformant to RIPE-580       |
remarks:        | - We filter out IPv4 prefixes longer than /24 and IPv6   |
remarks:        |   prefixes longer than /48, RFC1918, special use         |
remarks:        |   prefixes as well as {0.0.0.0/0} and {::/0}             |
remarks:        | - More details at http://as21250.peeringdb.com/          |
remarks:        +----------------------------------------------------------+
remarks:        +- Contact Details ----------------------------------------+
remarks:        |  - Abuse ................ : abuse@tyfon.net              |
remarks:        |  - Peering .............. : peering@tyfon.net            |
remarks:        |  - Routing .............. : noc@tyfon.net                |
remarks:        |  - Other ................ : info@tyfon.net               |
remarks:        |  - Homepage ............. : http://tyfon.net/            |
remarks:        |  - Telephone (24 x 7) ... : +46-8-546 000 00             |
remarks:        |  - Facsimile ............ : +46-8-550 120 02             |
remarks:        +----------------------------------------------------------+
mnt-by:         BAHNHOF-NCC
created:        2002-08-12T11:28:13Z
last-modified:  2019-04-09T13:46:54Z
source:         RIPE

organisation:   ORG-BIA1-RIPE
org-name:       Bahnhof AB
country:        SE
org-type:       LIR
address:        Fack 534 FE 756
address:        751 75
address:        Uppsala
address:        SWEDEN
phone:          +46(0)8 55577155
fax-no:         +46855577199
abuse-c:        AR13477-RIPE
admin-c:        BD856-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        BAHNHOF-NCC
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         BAHNHOF-NCC
created:        2004-04-17T12:02:22Z
last-modified:  2021-06-17T13:46:10Z
source:         RIPE # Filtered

role:           TYFON NOC
address:        Tyfon Svenska AB
address:        Box 320
address:        SE 15124 Sodertalje
address:        SWEDEN
phone:          +46 8 546 000 00
fax-no:         +46 8 550 120 02
abuse-mailbox:  abuse@tyfon.net
remarks:        +------------------------------------+
remarks:        | for abuse related incidents please |
remarks:        |         use abuse@tyfon.net        |
remarks:        +------------------------------------+
admin-c:        DAN-RIPE
tech-c:         DAN-RIPE
nic-hdl:        TNOC1-RIPE
remarks:        PGP key: PGPKEY-5EF6A839
mnt-by:         TYFON-NOC
created:        2003-11-17T09:51:16Z
last-modified:  2016-09-12T12:31:37Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.113.2 (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