These entries are queried from radb.net using whois, you can try my project getting these.
:AS23297 route: 67.52.117.0/24 descr: Frontier Communications (ARIN OrgID: FRTR) origin: AS23297 remarks: remarks: -- Operational Contacts -- remarks: Abuse / UCE: abuse [at] support.ftr.com remarks: NOC / Maint: support [at] support.ftr.com remarks: BGP Routing: bgp [at] support.ftr.com remarks: remarks: Proxy-registered route object remarks: for Frontier BGP customer remarks: mnt-by: MAINT-AS5650 changed: ricardo.ramirez [at] ftr.com 20200915 source: RADB last-modified: 2024-02-15T15:38:53Z rpki-ov-state: valid