These entries are queried from radb.net using whois, you can try my project getting these.
:AS15037 route: 204.128.147.0/24 origin: AS15037 descr: Virtela Communications Proxy for Redhat 5680 Greenwood Plaza Blvd Greenwood Village CO 80111 US notify: goc [at] virtela.net mnt-by: MAINT-VRTL created: 2009-05-11T17:58:29Z last-modified: 2018-09-04T16:04:04Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.128.147.0/24 origin: AS15037 descr: Virtela Communications Proxy for Redhat 5680 Greenwood Plaza Blvd Greenwood Village CO 80111 US notify: goc [at] virtela.net mnt-by: MAINT-VRTL changed: goc [at] virtela.net 20090511 source: RADB last-modified: 2023-11-13T15:40:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source