These entries are queried from radb.net using whois, you can try my project getting these.
:AS42481 route: 91.192.148.0/22 descr: Adtech origin: AS42481 mnt-by: RAMBLER-MNT created: 2012-05-11T14:44:55Z last-modified: 2021-06-09T15:57:44Z 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: valid route: 91.192.148.0/24 descr: Adtech LX origin: AS42481 mnt-by: RAMBLER-MNT created: 2007-03-06T15:55:01Z last-modified: 2021-06-09T15:54:44Z 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: valid route: 91.192.149.0/24 descr: Adtech KR origin: AS42481 mnt-by: RAMBLER-MNT created: 2007-03-06T15:55:52Z last-modified: 2021-06-09T15:55:11Z 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: valid route: 91.192.150.0/24 descr: Adtech OS origin: AS42481 mnt-by: RAMBLER-MNT created: 2007-03-01T11:42:35Z last-modified: 2021-06-09T15:55:47Z 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: valid route: 91.192.151.0/24 descr: Adtech Reserved origin: AS42481 mnt-by: RAMBLER-MNT created: 2007-03-01T08:29:45Z last-modified: 2021-06-09T15:56:19Z 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: valid