% 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.
%       To receive output for a database update, use the "-B" flag.

% Information related to '83.251.0.0 - 83.251.7.255'

% Abuse contact for '83.251.0.0 - 83.251.7.255' is 'abuse@tele2.com'

inetnum:        83.251.0.0 - 83.251.7.255
netname:        SE-TELE2-BROADBAND-CUSTOMER
descr:          Tele2 customer broadband access
descr:          ISP
descr:          ********************************
descr:          Abuse & intrusion reports should be done online at:
descr:          http://tele2.se/kundservice/abuse
descr:          ********************************
country:        SE
admin-c:        SWIP-RIPE
tech-c:         SWIP-RIPE
status:         ASSIGNED PA
mnt-by:         COMHEM-MNT
created:        2005-05-13T17:10:23Z
last-modified:  2021-04-27T05:33:30Z
source:         RIPE

role:           Swipnet Staff
address:        Tele2 AB/Swedish IP Network
address:        IP Registry
address:        Torshamnsgatan 17 164 40 Kista SWEDEN
fax-no:         +46 8 5626 42 10
abuse-mailbox:  abuse@tele2.com
remarks:        The database object describes the staff of SWIPNET LIR.
admin-c:        ROSI3-RIPE
admin-c:        TH6544-RIPE
tech-c:         ROSI3-RIPE
tech-c:         TH6544-RIPE
nic-hdl:        SWIP-RIPE
mnt-by:         SWIPNET-LIR-MNT
created:        2002-03-21T14:25:04Z
last-modified:  2022-11-23T10:36:53Z
source:         RIPE # Filtered

% Information related to '83.248.0.0/13AS1257'

route:          83.248.0.0/13
origin:         AS1257
mnt-by:         AS1257-MNT
created:        2021-07-13T10:14:08Z
last-modified:  2021-07-13T10:14:08Z
source:         RIPE

% Information related to '83.248.0.0/13AS39651'

route:          83.248.0.0/13
descr:          SE-COMHEM
origin:         AS39651
mnt-by:         COMHEM-MNT
created:        2006-07-05T13:55:15Z
last-modified:  2006-07-05T13:55:15Z
source:         RIPE

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

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