These entries are queried from radb.net using whois, you can try my project getting these.
:AS26135 route: 65.148.35.0/24 descr: NETGAIN origin: AS26135 mnt-by: MAINT-CHTR-WD changed: daniel.demouchet [at] chartercom.com 20120905 #21:33:43Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 70.99.183.0/24 descr: NETGAIN origin: AS26135 mnt-by: MAINT-CHTR-WD changed: daniel.demouchet [at] chartercom.com 20120905 #21:35:44Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.96.228.0/22 descr: SB customer Netgain Technology origin: AS26135 mnt-by: MAINT-CHTR-WD changed: wendel.herron [at] chartercom.com 20110307 #22:58:49Z source: RADB last-modified: 2023-11-13T16:11:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.173.9.0/24 descr: NETGAIN origin: AS26135 mnt-by: MAINT-CHTR-WD changed: daniel.demouchet [at] chartercom.com 20120905 #21:36:28Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source