These entries are queried from radb.net using whois, you can try my project getting these.
:AS54105 route: 199.19.88.0/22 descr: Proxy addition on behalf of Second Street origin: AS54105 notify: dlnocip3 [at] charter.com notify: dldntnbb [at] charter.com mnt-by: MAINT-CHTR-WD changed: david.gleich [at] charter.com 20160330 #19:55:55Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source