These entries are queried from radb.net using whois, you can try my project getting these.
:AS398499 route: 198.54.140.0/24 origin: AS398499 descr: SL Green Realty Corp admin-c: ENGIN81-ARIN tech-c: ENGIN81-ARIN mnt-by: MNT-SGRC-1 created: 2021-02-02T23:33:36Z last-modified: 2021-02-02T23:33:36Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.54.140.0/24 descr: SL Green origin: AS398499 mnt-by: MAINT-AS27506 changed: daniel.depaulis [at] crowncastle.com 20210120 source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fd2c::/48 origin: AS398499 descr: SL Green Realty Corp admin-c: ENGIN81-ARIN tech-c: ENGIN81-ARIN mnt-by: MNT-SGRC-1 created: 2021-02-02T23:32:58Z last-modified: 2021-02-02T23:32:58Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:fd2c::/48 descr: SL Green origin: AS398499 mnt-by: MAINT-AS27506 changed: daniel.depaulis [at] crowncastle.com 20210120 source: RADB last-modified: 2023-11-13T16:03:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source