These entries are queried from radb.net using whois, you can try my project getting these.
:AS55415 route: 182.16.232.0/24 descr: Marina Bay Sands Pte Ltd origin: AS55415 mnt-by: MAINT-MBS-SG last-modified: 2019-04-11T06:01:05Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 182.16.233.0/24 descr: Marina Bay Sands Pte Ltd origin: AS55415 mnt-by: MAINT-MBS-SG last-modified: 2019-04-09T08:52:47Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 182.16.234.0/23 descr: Proxy-registered route object origin: AS55415 remarks: This route object is for a PCCW Global customer route which is being exported under this origin AS. _ This route object was created because no existing route object with the same origin was found, and since some PCCW Global peers filter based on these objects this route may be rejected if this object is not created. _ Please contact peering [at] pccwglobal.com if you have any questions regarding this object. mnt-by: MAINT-AS3491 changed: sajwani [at] pccwbtn.com 20100304 #16:31:50Z source: RADB last-modified: 2023-11-13T15:42:40Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 182.16.234.0/24 descr: Marina Bay Sands Pte Ltd origin: AS55415 mnt-by: MAINT-MBS-SG last-modified: 2019-04-09T08:53:33Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 182.16.235.0/24 descr: Marina Bay Sands Pte Ltd origin: AS55415 mnt-by: MAINT-MBS-SG last-modified: 2019-04-09T08:55:15Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 223.255.254.0/24 origin: AS55415 descr: Marina Bay Sands Pte Ltd 10 Bayfront Ave mnt-by: MAINT-SG-MBS last-modified: 2019-04-08T01:57:49Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source