These entries are queried from radb.net using whois, you can try my project getting these.
:AS53567 route: 199.15.152.0/21 descr: VOLstate, Inc. origin: AS53567 mnt-by: MAINT-AS20448 changed: jfreeman [at] peacecom.net 20120124 source: BBOI rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.152.0/21 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.152.0/22 origin: AS53567 descr: proxy for PEACE customer admin-c: WABIK-ARIN tech-c: BBELLI86-ARIN notify: bob.bellinger [at] dcblox.com mnt-by: MAINT-AS395567 changed: bob.bellinger [at] dcblox.com 20210913 #16:29:19Z source: RADB last-modified: 2023-11-13T16:08:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.152.0/24 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.153.0/24 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.154.0/24 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.15.156.0/22 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.142.114.0/24 descr: CHTR-REVTEL-South origin: AS53567 admin-c: IPADD1-ARIN tech-c: IPADD1-ARIN notify: PublicIPAdressing [at] charter.com mnt-by: MAINT-CHTR-WD changed: PublicIPAdressing [at] charter.com 20211228 source: RADB last-modified: 2023-11-13T16:11:27Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.235.188.0/23 descr: VOLstate, Inc. origin: AS53567 mnt-by: MAINT-AS20448 changed: jfreeman [at] peacecom.net 20120124 source: BBOI rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.235.188.0/23 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.235.189.0/24 descr: Proxy Entry for RevTel origin: AS53567 mnt-by: MAINT-CHTR-WD changed: alec.ritter [at] charter.com 20180712 source: RADb last-modified: 2023-11-13T16:11:26Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.235.191.0/24 descr: Volstate.net origin: AS53567 mnt-by: MAINT-CHTR-WD changed: kevin.brunner [at] chartercom.com 20100727 #18:54:37Z source: RADB last-modified: 2023-11-13T16:11:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source