These entries are queried from radb.net using whois, you can try my project getting these.
:AS30281 route: 8.15.9.0/24 descr: Washington Post 1150 15th. St. N.W. Washington, DC 20071 US origin: AS30281 mnt-by: MAINT-AS6079 remarks: proxy-registered object for customer remarks: direct inquiries vinyardmd [at] washpost.com changed: terrence.hunter [at] rcn.net 20080623 source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 8.15.9.0/24 descr: Route for the Washington Post origin: AS30281 remarks: Added to sync up RR to actual router prior to groom mnt-by: WASHPOST-MNT changed: bonnie.caldwell [at] level3.com 20070125 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.210.58.0/24 descr: Route for The Washington Post origin: AS30281 mnt-by: WASHPOST-MNT changed: bodie.francis [at] level3.com 20030924 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.210.58.0/24 descr: Washington Post 1150 15th. St. N.W. Washington, DC 20071 US origin: AS30281 mnt-by: MAINT-AS6079 remarks: proxy-registered object for customer remarks: direct inquiries vinyardmd [at] washpost.com changed: terrence.hunter [at] rcn.net 20080623 source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.72.14.0/23 descr: LIGHTOWER-CSR-WASHINGTON POST origin: AS30281 mnt-by: MAINT-AS27506 changed: dataoperations [at] sidera.net 20131125 #15:51:29Z source: RADB last-modified: 2023-11-13T15:45:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source