These entries are queried from radb.net using whois, you can try my project getting these.
:AS19796 route: 207.246.210.0/24 descr: Proxy Registration for Shubert Organization by Digital Realty origin: AS19796 mnt-by: MAINT-TELX changed: ipadmin [at] telx.com 20180404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.246.215.0/24 descr: Shubert Organization, Inc. origin: AS19796 mnt-by: MAINT-RAINBOW changed: engineering [at] gigstreem.com 20230404 source: NTTCOM last-modified: 2023-04-05T02:31:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.246.215.0/24 descr: RR-RC-The Shubert Organization-Hackensack origin: AS19796 mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.246.217.0/24 descr: RR-RC-SHUBERT ORG-SHUBERT THEATRE NY-NYC origin: AS19796 admin-c: IPADDREG tech-c: IPADDREG notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20200521 #05:57:45Z source: RADB last-modified: 2023-11-13T16:15:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.246.222.0/24 descr: Proxy Registration for Shubert Organization by Digital Realty origin: AS19796 mnt-by: MAINT-TELX changed: ipadmin [at] telx.com 20180404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source