These entries are queried from radb.net using whois, you can try my project getting these.
:AS1999 route: 74.119.129.0/24 origin: AS1999 descr: Registered by 26479 on behalf of AS1999 mnt-by: MAINT-AS26479 changed: jpatterson [at] point-broadband.com 20200923 #19:12:05Z source: RADB last-modified: 2023-11-13T16:01:54Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 137.18.0.0/16 descr: Creating route for U.S. Government Legislative Branch origin: AS1999 mnt-by: ADAMS-MNT changed: rshibata [at] level3.net 20031103 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.228.0.0/16 descr: Creating route for U.S. Government Legislative Branch origin: AS1999 mnt-by: ADAMS-MNT changed: rshibata [at] level3.net 20031103 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 143.231.0.0/16 descr: Creating route for U.S. Government Legislative Branch origin: AS1999 mnt-by: ADAMS-MNT changed: rshibata [at] level3.net 20031103 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:0:e20::/46 descr: U.S. Government Legislative Branch origin: AS1999 mnt-by: ADAMS-MNT changed: peggy.knapp [at] level3.com 20110217 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source