% APNIC found the following authoritative answer from: whois.ripe.net

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% Information related to '109.245.78.4 - 109.245.78.15'

% Abuse contact for '109.245.78.4 - 109.245.78.15' is 'net-reg@cetin.rs'

inetnum:        109.245.78.4 - 109.245.78.15
netname:        RS-CETIN-20091223
descr:          CETIN doo Serbia address space for wholesale user  BROSE D.O.O. PAN?EVO
country:        RS
remarks:        **************************************************************
remarks:        for ABUSE use belgrade@brose.com
remarks:        **************************************************************
org:            ORG-CLB1-RIPE
admin-c:        VS11222-RIPE
tech-c:         VS11222-RIPE
status:         ASSIGNED PA
mnt-by:         mnt-rs-cetin-1
created:        2024-08-15T06:57:41Z
last-modified:  2024-08-15T06:57:41Z
source:         RIPE # Filtered

organisation:   ORG-CLB1-RIPE
org-name:       CETIN Ltd. Belgrade
country:        RS
reg-nr:         21594105
org-type:       LIR
address:        Omladinskih brigada 90
address:        11070
address:        Belgrade
address:        SERBIA
phone:          +381 63 444 222
admin-c:        VS11222-RIPE
tech-c:         VS11222-RIPE
abuse-c:        AR60981-RIPE
mnt-ref:        mnt-rs-cetin-1
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         mnt-rs-cetin-1
created:        2020-09-14T07:32:12Z
last-modified:  2026-05-13T07:27:00Z
source:         RIPE # Filtered

role:           Visnja Simpraga
address:        Omladinskih brigada 90
address:        11070
address:        Belgrade
address:        SERBIA
phone:          +381 63 444 222
nic-hdl:        VS11222-RIPE
mnt-by:         mnt-rs-cetin-1
created:        2020-09-14T07:32:10Z
last-modified:  2020-09-14T07:32:12Z
source:         RIPE # Filtered

% Information related to '109.245.64.0/19AS15958'

route:          109.245.64.0/19
descr:          CETINDOO-APN-NET
descr:          Cetin d.o.o Beograd
origin:         AS15958
remarks:        **************************************************************
remarks:        for ABUSE use abuse@cetin.rs
remarks:        **************************************************************
mnt-by:         mnt-rs-cetin-1
created:        2009-12-25T21:41:34Z
last-modified:  2024-12-20T15:23:09Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.123 (BUSA)