These entries are queried from radb.net using whois, you can try my project getting these.
:AS393251 route: 192.251.46.0/23 descr: Proxy-registered route object for Francis Marion University origin: AS393251 remarks: This route object is for a Spirit Telecom customer route which is being exported under this origin AS. mnt-by: MAINT-AS2711 changed: kevin.billings [at] spiritcom.com 20120801 #12:31:53Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.102.206.0/24 descr: Proxy-registered route object for Francis Marion University origin: AS393251 remarks: This route object is for a Spirit Telecom customer route which is being exported under this origin AS. mnt-by: MAINT-AS2711 changed: kevin.billings [at] spiritcom.com 20120801 #12:32:59Z source: RADB last-modified: 2023-11-13T15:43:21Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source