These entries are queried from radb.net using whois, you can try my project getting these.
:AS19506 route: 208.83.136.0/22 descr: PNAP-NYM cloudmark origin: AS19506 mnt-by: MAINT-AS1828 changed: rkosa [at] internap.com 20080411 source: RADB last-modified: 2023-11-13T16:14:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.83.136.0/23 descr: PNAP-NYM cloudmark origin: AS19506 mnt-by: MAINT-AS1828 changed: rkosa [at] internap.com 20080411 source: RADB last-modified: 2023-11-13T16:14:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.83.138.0/23 descr: PNAP-NYM cloudmark origin: AS19506 mnt-by: MAINT-AS1828 changed: rkosa [at] internap.com 20080411 source: RADB last-modified: 2023-11-13T16:14:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source