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

% [whois.apnic.net]
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% Information related to 'AS153914 - AS154937'

as-block:       AS153914 - AS154937
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2025-04-01T05:54:59Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS154034'

% Abuse contact for 'AS154034' is 'abuse@pandanaran.id'

aut-num:        AS154034
as-name:        IDNIC-SDCT-AS-ID
descr:          PT Semarang Data Center
descr:          Corporate / Direct Member IDNIC
descr:          Jalan Sumbawa II No.3
descr:          Semarang Timur, Kota Semarang, 50125
country:        ID
remarks:        Send spam and abuse report to: abuse@pandanaran.id
admin-c:        WN349-AP
tech-c:         WN349-AP
mnt-routes:     MAINT-ID-SDCT
mnt-by:         MNT-APJII-ID
mnt-irt:        IRT-SDCT-ID
import:         from AS24521 action pref=110; accept ANY
export:         to AS24521 announce AS154034
default:        to AS24521 action pref=10; networks ANY
last-modified:  2025-07-08T04:57:08Z
source:         APNIC

irt:            IRT-SDCT-ID
address:        PT Semarang Data Center
address:        Jalan Sumbawa II No.3
address:        Semarang Timur, Kota Semarang, 50125
e-mail:         wiwid@pandanaran.id
abuse-mailbox:  abuse@pandanaran.id
admin-c:        WN349-AP
tech-c:         WN349-AP
auth:           # Filtered
mnt-by:         MAINT-ID-SDCT
last-modified:  2026-03-09T15:39:15Z
source:         APNIC

person:         Wijanarko Nugroho
address:        Jalan Sumbawa II No 3
address:        Semarang Timur, Kota Semarang 50125
country:        ID
phone:          +62-822-2122-2082
e-mail:         wiwid@pandanaran.id
nic-hdl:        WN349-AP
mnt-by:         MNT-APJII-ID
last-modified:  2025-06-13T08:25:36Z
source:         APNIC

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