These entries are queried from radb.net using whois, you can try my project getting these.
:AS205201 route: 188.120.121.0/24 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: ORIONTELEKOM-MNT created: 2018-03-23T08:20:00Z last-modified: 2018-03-23T08:20:00Z 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: 188.120.122.0/23 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: MNT-MAKSNET created: 2018-12-28T23:08:24Z last-modified: 2018-12-28T23:08:24Z 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: 188.120.122.0/24 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: ORIONTELEKOM-MNT created: 2018-03-23T08:20:30Z last-modified: 2018-03-23T08:20:30Z 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: 188.120.123.0/24 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: ORIONTELEKOM-MNT created: 2018-03-23T08:21:10Z last-modified: 2018-03-23T08:21:10Z 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: 188.120.126.0/24 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: lir-rs-rts-serbia-1-MNT created: 2021-11-04T09:52:03Z last-modified: 2021-11-04T09:52:03Z 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: 194.28.130.0/24 descr: Radio Televizija Srbije - RTS origin: AS205201 mnt-by: ORIONTELEKOM-MNT created: 2018-01-24T10:26:59Z last-modified: 2018-01-24T10:26:59Z 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