These entries are queried from radb.net using whois, you can try my project getting these.
:AS135286 route: 103.31.128.0/22 descr: Route Object for Customer (MekongNet) origin: AS135286 mnt-by: MAINT-AS45796 changed: apinan_k [at] beenets.com 20161208 #08:36:23Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.31.128.0/24 descr: Route Object for Customer (MekongNet) origin: AS135286 mnt-by: MAINT-AS45796 changed: apinan_k [at] beenets.com 20161208 #08:36:23Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.31.129.0/24 descr: Route Object for Customer (MekongNet) origin: AS135286 mnt-by: MAINT-AS45796 changed: apinan_k [at] beenets.com 20161208 #08:36:23Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.31.130.0/24 descr: Route Object for Customer (MekongNet) origin: AS135286 mnt-by: MAINT-AS45796 changed: apinan_k [at] beenets.com 20161208 #08:36:23Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.31.131.0/24 descr: Route Object for Customer (MekongNet) origin: AS135286 mnt-by: MAINT-AS45796 changed: apinan_k [at] beenets.com 20161208 #08:36:23Z source: RADB last-modified: 2023-11-13T15:50:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source