in my opinion this is just plain stupid… luckily fail2ban is realitvely fast in stopping those attacks… but they also put strain on the webserver, especially when a bot net is beeing used (loads of ips attacking at the same time) which might would be more a DDoS attack.

whois 88.235.10.44
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

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

% Information related to '88.235.0.0 - 88.235.255.255'

% Abuse contact for '88.235.0.0 - 88.235.255.255' is 'abuse@ttnet.com.tr'

inetnum:        88.235.0.0 - 88.235.255.255
netname:        TurkTelekom
descr:          TT ADSL-TTnet_dynamic_gay
country:        tr
admin-c:        TTBA1-RIPE
tech-c:         TTBA1-RIPE
status:         ASSIGNED PA
mnt-by:         as9121-mnt
created:        2010-07-27T08:55:55Z
last-modified:  2010-07-27T08:55:55Z
source:         RIPE # Filtered

role:           TT Administrative Contact Role
address:        Turk Telekom Genel Mudurlugu
phone:          +90 312 555 0000
fax-no:         +90 312 313 1924
admin-c:        BADB3-RIPE
abuse-mailbox:  abuse@ttnet.com.tr
tech-c:         BADB3-RIPE
tech-c:         BADB3-RIPE
tech-c:         BADB3-RIPE
nic-hdl:        TTBA1-RIPE
mnt-by:         AS9121-MNT
created:        2002-02-28T12:22:28Z
last-modified:  2017-03-29T05:21:26Z
source:         RIPE # Filtered

% Information related to '88.235.0.0/17AS9121'

route:          88.235.0.0/17
descr:          TurkTelecom
origin:         AS9121
mnt-by:         AS9121-MNT
created:        2006-11-20T06:52:29Z
last-modified:  2006-11-20T06:52:29Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.88 (ANGUS)


whois 89.43.78.28 
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

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

% Information related to '89.43.78.0 - 89.43.78.255'

% Abuse contact for '89.43.78.0 - 89.43.78.255' is 'sales@onlinenet.com.tr'

inetnum:        89.43.78.0 - 89.43.78.255
netname:        TR-0NLINENET-20051129
country:        TR
org:            ORG-AETA2-RIPE
admin-c:        AE4263-RIPE
tech-c:         AE4263-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         onlinenet-mnt
mnt-routes:     onlinenet-mnt
mnt-domains:    onlinenet-mnt
mnt-routes:     AS42926-MNT
created:        2016-01-08T08:59:34Z
last-modified:  2016-09-21T17:21:23Z
source:         RIPE

organisation:   ORG-AETA2-RIPE
org-name:       Aykut Eskitoglu trading as OnlineNet
org-type:       LIR
address:        Ba?larba?? Mahallesi Cemal Bey Caddesi F?rat Sokak No 18/5
address:        34844
address:        ?stanbul
address:        TURKEY
phone:          +908504551953
fax-no:         +902169881653
abuse-c:        AC28602-RIPE
mnt-ref:        onlinenet-mnt
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         onlinenet-mnt
created:        2014-12-16T16:11:47Z
last-modified:  2016-09-21T16:48:41Z
source:         RIPE # Filtered
admin-c:        AE4263-RIPE

person:         Aykut Eskitoglu
address:        Baglarbasi mah Cemalbey cad. Firat sk no 18/5
phone:          +90.8504551953
abuse-mailbox:  sales@onlinenet.com.tr
nic-hdl:        AE4263-RIPE
mnt-by:         onlinenet-mnt
created:        2014-12-16T17:45:49Z
last-modified:  2014-12-23T18:34:15Z
source:         RIPE # Filtered

% Information related to '89.43.78.0/24AS42926'

route:          89.43.78.0/24
origin:         AS42926
mnt-by:         AS42926-MNT
created:        2016-09-22T10:05:49Z
last-modified:  2016-09-22T10:05:49Z
source:         RIPE

% Information related to '89.43.78.0/24AS43260'

route:          89.43.78.0/24
descr:          Route
origin:         AS43260
mnt-by:         DGN-MNT

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