These entries are queried from radb.net using whois, you can try my project getting these.
:AS19749 route: 68.235.192.0/19 descr: GNC route origin: AS19749 mnt-by: GENER-242 changed: christine.russell [at] level3.com20101028 20101028 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.210.0/24 descr: GNC origin: AS19749 mnt-by: MAINT-AS27506 changed: aday [at] lightower.com 20171114 source: RADB last-modified: 2023-11-13T15:52:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.210.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.216.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.216.0/24 descr: GNC origin: AS19749 mnt-by: MAINT-AS27506 changed: aday [at] lightower.com 20171114 source: RADB last-modified: 2023-11-13T15:52:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.217.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.220.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.220.0/24 descr: GNC origin: AS19749 mnt-by: MAINT-AS27506 changed: aday [at] lightower.com 20171114 source: RADB last-modified: 2023-11-13T15:52:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.221.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.221.0/24 descr: GNC origin: AS19749 mnt-by: MAINT-AS27506 changed: aday [at] lightower.com 20171114 source: RADB last-modified: 2023-11-13T15:52:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.235.223.0/24 descr: LightBound Route Object origin: AS19749 remarks: This route object is for a LightBound customer route remarks: which is being exported under this origin AS. remarks: Registered on the behalf of our customer: remarks: GNC mnt-by: MAINT-LIGHTBOUND changed: cmcgill [at] databank.com 20220203 source: AltDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source