These entries are queried from radb.net using whois, you can try my project getting these.
:AS263961 route: 138.255.104.0/22 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:25:50Z rpki-ov-state: valid route: 138.255.104.0/24 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:18:49Z rpki-ov-state: valid route: 138.255.105.0/24 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:20:36Z rpki-ov-state: valid route: 138.255.106.0/24 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:23:05Z rpki-ov-state: valid route: 138.255.107.0/24 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:24:28Z rpki-ov-state: valid route6: 2804:2868::/32 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:38:10Z rpki-ov-state: valid route6: 2804:2868::/33 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:44:33Z rpki-ov-state: valid route6: 2804:2868::/34 descr: NETMASTER TELECOM origin: AS263961 mnt-by: MAINT-AS263961 source: TC last-modified: 2023-06-15T18:46:00Z rpki-ov-state: valid