These entries are queried from radb.net using whois, you can try my project getting these.
:AS53571 route: 199.181.152.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt. Laurel, NJ 08054 origin: AS53571 remarks: Proxy object for Precision Castparts mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130205 #22:32:49Z 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: 199.181.152.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.96.0/20 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt. Laurel, NJ 08054 origin: AS53571 remarks: Proxy object for Precision Castparts mnt-by: MAINT-AS7922 changed: stuart_nickerson [at] cable.comcast.com 20130205 #22:34:44Z 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: 204.155.96.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.98.0/24 origin: AS53571 descr: Precision Castparts Corp mnt-by: MAINT-AS53571 changed: dwalden [at] precastcorp.com 20200417 #15:43:59Z source: RADB last-modified: 2023-11-13T16:00:24Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.100.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.100.0/24 origin: AS53571 descr: Precision Castparts Corp Atlanta, GA admin-c: WALDE39-ARIN tech-c: KEMPR-ARIN tech-c: TRINH34-ARIN tech-c: WALDE39-ARIN mnt-by: MNT-PCC-156 created: 2022-06-28T13:25:41Z last-modified: 2022-06-28T13:25:41Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.101.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.101.0/24 origin: AS53571 descr: Precision Castparts Corp. Perth, Western Australia admin-c: WALDE39-ARIN tech-c: KEMPR-ARIN tech-c: TRINH34-ARIN tech-c: WALDE39-ARIN mnt-by: MNT-PCC-156 created: 2023-04-05T14:56:48Z last-modified: 2023-04-05T14:56:48Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.103.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.104.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.105.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #20:44:27Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.106.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: mpeters [at] precastcorp.com 20150211 #21:56:30Z source: RADB last-modified: 2023-11-13T15:47:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.107.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: dwalden [at] precastcorp.com 20180201 #13:57:58Z source: RADB last-modified: 2023-11-13T15:53:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.108.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: dwalden [at] precastcorp.com 20160923 #14:23:24Z source: RADB last-modified: 2023-11-13T15:49:53Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.109.0/24 origin: AS53571 descr: NWST #ECR000001350769 remarks: Proxy object for AS53571 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: 204.155.110.0/24 origin: AS53571 descr: Precision Castparts Minverva, OH admin-c: WALDE39-ARIN tech-c: KEMPR-ARIN tech-c: TRINH34-ARIN tech-c: WALDE39-ARIN mnt-by: MNT-PCC-156 created: 2021-01-06T19:58:12Z last-modified: 2021-01-06T19:58:12Z source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.110.0/24 origin: AS53571 descr: Precision Castparts Corp. Minerva, OH geoidx: Ohio geoidx: US mnt-by: MAINT-AS53571 changed: dwalden [at] precastcorp.com 20210106 #20:00:30Z source: RADB last-modified: 2023-11-13T16:03:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.155.111.0/24 descr: Precision Castparts Corp. origin: AS53571 mnt-by: MAINT-AS53571 changed: dmwalden [at] pccaero.com 20160225 #18:44:49Z source: RADB last-modified: 2023-11-13T15:48:45Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source