These entries are queried from radb.net using whois, you can try my project getting these.
:AS14403 route: 12.150.57.0/24 descr: Forced Object Correction origin: AS14403 mnt-by: MAINT-AS7132 changed: peering [at] intl.att.com 20190903 source: RADB last-modified: 2023-11-13T15:57:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.150.57.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.150.60.0/23 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.150.60.0/23 descr: Forced Object Correction origin: AS14403 mnt-by: MAINT-AS7132 changed: peering [at] intl.att.com 20190903 source: RADB last-modified: 2023-11-13T15:57:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.164.6.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.164.6.0/24 descr: Forced Object Correction origin: AS14403 mnt-by: MAINT-AS7132 changed: peering [at] intl.att.com 20190903 source: RADB last-modified: 2023-11-13T15:57:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.140.0/23 descr: US Signal downstream customer origin: AS14403 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20090625 #14:58:52Z source: RADB last-modified: 2023-11-13T15:40:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.140.0/23 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.140.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.141.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.142.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.74.142.0/24 descr: US Signal downstream customer origin: AS14403 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20090625 #14:59:19Z source: RADB last-modified: 2023-11-13T15:40:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.250.236.0/24 descr: ADDED FOR - AS14403 origin: AS14403 mnt-by: I123-MNT changed: rpd [at] 123.net 20090626 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 68.250.236.0/24 descr: US Signal downstream customer origin: AS14403 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20090625 #15:00:08Z source: RADB last-modified: 2023-11-13T15:40:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.27.188.0/22 descr: For downstream customer Raser origin: AS14403 mnt-by: MAINT-AS26554 changed: noc [at] ussignalcom.com 20100827 #02:41:04Z source: RADB last-modified: 2023-11-13T15:41:00Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.27.189.0/24 descr: Tucker Communications origin: AS14403 mnt-by: MAINT-CHTR-WD changed: julius.olevsky [at] chartercom.com 20120920 #22:12:48Z source: RADB last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source