These entries are queried from radb.net using whois, you can try my project getting these.
:AS19861 route: 198.232.183.0/24 descr: WCBE origin: AS19861 remarks: WCBE remarks: Originated by WCBE and advertised by Shentel via Antietam Cable notify: bob.alexander [at] emp.shentel.com mnt-by: MAINT-SHENTEL changed: bob.alexander [at] emp.shentel.com 20151019 source: NTTCOM rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source