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

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% Information related to 'AS43075 - AS44168'

as-block:       AS43075 - AS44168
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:        2023-12-11T15:09:58Z
last-modified:  2023-12-11T15:09:58Z
source:         RIPE

% Information related to 'AS43153'

% Abuse contact for 'AS43153' is 'abuse@sferanet.pl'

aut-num:        AS43153
as-name:        SFERANET-AS
org:            ORG-SFER1-RIPE
import:         from AS20804 accept ANY
export:         to AS20804 announce AS43153
import:         from AS8938 accept ANY
export:         to AS8938 announce AS43153
import:         from AS8246 accept ANY
export:         to AS8246 announce AS43153
import:         from AS12741 accept ANY
export:         to AS12741 announce AS43153
import:         from AS59460 accept ANY
export:         to AS59460 announce AS43153
export:         to AS5588 announce AS43153
import:         from AS5588 accept ANY
import:         from AS61056 accept ANY
export:         to AS61056 announce AS43153
admin-c:        MK15612-RIPE
tech-c:         MK15612-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-EXATEL
mnt-by:         MNT-SFERANET
created:        2007-06-14T15:30:43Z
last-modified:  2018-09-04T10:24:51Z
source:         RIPE # Filtered
sponsoring-org: ORG-TS16-RIPE

organisation:   ORG-SFER1-RIPE
org-name:       SFERANET S.A.
country:        PL
org-type:       OTHER
descr:          SFERANET S.A.
remarks:        Internet Service Provider
address:        Poland
address:        43-300 Bielsko-Biala
address:        ul. PCK 8
phone:          +48 334990930
abuse-c:        AR22750-RIPE
mnt-ref:        MNT-SFERANET
mnt-by:         AS8938-MAINT
created:        2007-03-01T09:40:43Z
last-modified:  2022-12-01T16:50:06Z
source:         RIPE # Filtered

person:         Marcin Kuc
address:        SFERANET S.A
address:        ul. PCK 8
address:        43-300 Bielsko-Biala
phone:          +48 33 499 09 33
nic-hdl:        MK15612-RIPE
mnt-by:         MNT-EXATEL
created:        2013-11-28T08:40:16Z
last-modified:  2013-11-28T08:40:16Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.111 (SHETLAND)

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