These entries are queried from radb.net using whois, you can try my project getting these.
:AS6254 route: 50.224.126.0/23 descr: Perkin Elmer EG&G origin: AS6254 mnt-by: MAINT-AS27506 changed: probillard [at] lightower.com 20160506 source: RADB last-modified: 2023-11-13T15:49:08Z rpki-ov-state: valid route: 165.88.0.0/16 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS6254 remarks: Proxy add for EDIA customer Perkin Elmer mnt-by: MAINT-AS7922 changed: adam_berg [at] cable.comcast.com 20140626 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 165.88.0.0/26 descr: Perkin Elmer EG&G origin: AS6254 mnt-by: MAINT-AS27506 changed: probillard [at] lightower.com 20160419 source: RADB last-modified: 2023-11-13T15:49:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.64.180.0/23 descr: RR-RC-PERKIN-ELMER INC-West origin: AS6254 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20210121 #05:28:00Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.64.180.0/24 descr: RR-RC-PERKIN-ELMER INC-West origin: AS6254 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20210121 #05:28:00Z source: RADB last-modified: 2023-11-13T16:15:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source