These entries are queried from radb.net using whois, you can try my project getting these.
:AS11396 route: 151.142.0.0/16 descr: Williams Block origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20041202 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.0.0/20 descr: Williams (AT&T Wireless/Mobility) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20121012 #15:30:31Z source: RADB last-modified: 2023-11-13T15:43:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.64.0/20 descr: Williams (Verizon Wireless) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20121012 #15:32:10Z source: RADB last-modified: 2023-11-13T15:43:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.128.0/20 descr: Williams (Pittsburgh) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20140808 #13:01:34Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.144.0/20 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.154.0/24 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.160.0/20 descr: Williams (Tulsa DCX) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20080211 source: RADB last-modified: 2023-11-13T15:39:55Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.160.0/21 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.168.0/21 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.176.0/21 descr: Williams (Salt Lake City - future expansion) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20140808 #13:03:24Z source: RADB last-modified: 2023-11-13T15:46:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.184.0/21 descr: Williams (Salt Lake City) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20041201 source: RADB last-modified: 2023-11-13T15:40:31Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.192.0/19 descr: Williams (Houston) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20041201 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.224.0/19 descr: Williams (Tulsa) origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20041201 source: RADB last-modified: 2023-11-13T15:39:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.224.0/20 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.240.0/20 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 151.142.251.0/24 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 161.245.0.0/16 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS11396 remarks: Proxy add for EDIA customer Williams Information Technology, LLC mnt-by: MAINT-AS7922 changed: adriana_pardoquintero [at] cable.comcast.com 20230522 source: RADB last-modified: 2023-11-13T16:17:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.21.0.0/16 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS11396 remarks: Proxy add for EDIA customer Williams Information Technology, LLC mnt-by: MAINT-AS7922 changed: adriana_pardoquintero [at] cable.comcast.com 20230522 source: RADB last-modified: 2023-11-13T16:17:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.21.246.0/24 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 170.21.247.0/24 origin: AS11396 descr: TULS #ECR000001350769 remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220520 source: RADB last-modified: 2023-11-13T16:11:18Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:185::/36 descr: Williams IPv6 Block origin: AS11396 notify: domain-admin [at] williams.com mnt-by: MAINT-AS11396 changed: domain-admin [at] williams.com 20181101 #14:56:59Z source: RADB last-modified: 2023-11-13T15:55:01Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2620:185:40::/44 origin: AS11396 descr: TULS remarks: Proxy object for AS11396 mnt-by: MAINT-AS22773 changed: cciatl-nocengineer [at] cox.com 20220513 source: RADB last-modified: 2023-11-13T16:11:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source