These entries are queried from radb.net using whois, you can try my project getting these.
:AS62221 route: 185.44.0.0/22 descr: Amayama ipv4 block origin: AS62221 mnt-by: MNT-AMAYAMA created: 2013-12-30T02:56:35Z last-modified: 2013-12-30T02:56:35Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.44.0.0/24 descr: Amayama network origin: AS62221 mnt-by: MNT-AMAYAMA created: 2013-12-30T02:45:03Z last-modified: 2013-12-30T02:45:48Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.44.1.0/24 descr: Amayama network origin: AS62221 mnt-by: MNT-AMAYAMA created: 2015-10-22T02:17:17Z last-modified: 2015-10-22T02:17:17Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.44.2.0/24 descr: Amayama ipv4 block origin: AS62221 mnt-by: MNT-AMAYAMA created: 2022-07-22T05:46:44Z last-modified: 2022-07-22T05:46:44Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.44.3.0/24 descr: Amayama ipv4 block origin: AS62221 mnt-by: MNT-AMAYAMA created: 2022-07-22T05:46:25Z last-modified: 2022-07-22T05:46:25Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a04:9580::/29 descr: Amayama origin: AS62221 mnt-by: MNT-AMAYAMA created: 2013-12-19T05:22:07Z last-modified: 2013-12-19T05:22:07Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a04:9580::/64 descr: Amayama origin: AS62221 mnt-by: MNT-AMAYAMA created: 2015-10-14T04:13:57Z last-modified: 2015-10-14T04:13:57Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source