These entries are queried from radb.net using whois, you can try my project getting these.
:AS27287 route: 64.20.80.0/20 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS27287 remarks: Proxy add for customer Secant Technologies mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20140923 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: 64.20.80.0/20 descr: ADDED FOR - AS27287 origin: AS27287 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20110907 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.250.144.0/20 descr: Route for SECANT TECHNOLOGIES origin: AS27287 mnt-by: MAINT-AS26554 changed: toc [at] ussignal.com 20180326 #21:27:04Z source: RADB last-modified: 2023-11-13T15:53:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.250.144.0/20 descr: SECANT Netblock origin: AS27287 mnt-by: I123-MNT changed: rpd [at] 123.net 20050520 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.250.154.0/24 descr: ADDED FOR - AS27287 origin: AS27287 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20191213 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.250.158.0/24 descr: ADDED FOR - AS27287 origin: AS27287 notify: noc [at] 123.net mnt-by: I123-MNT changed: rpd [at] 123.net 20191213 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2605:d300::/32 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS27287 remarks: Proxy add for customer Secant Technologies mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20140923 source: RADB last-modified: 2023-11-13T15:54:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source