These entries are queried from radb.net using whois, you can try my project getting these.
:AS10532 route: 50.56.228.0/22 origin: AS10532 descr: RXT HQ notify: office_networking [at] rackspace.com notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: chris.hansell [at] rackspace.com 20210719 #20:40:49Z source: RADB last-modified: 2023-11-13T16:07:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 50.56.228.0/23 descr: RR-RC-Rackspace Hosting-San Antonio origin: AS10532 notify: publicipaddressing [at] charter.com mnt-by: MAINT-RR changed: publicipaddressing [at] charter.com 20181017 #22:02:30Z source: RADB last-modified: 2023-11-13T16:15:02Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.39.0.0/20 descr: Rackspace, 5000 Walzem Road, San Antonio, TX 78218 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20120126 #20:17:56Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.49.247.0/24 descr: MTS origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20140605 #07:38:32Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.61.128.0/18 descr: 65.61.128.0/18 origin: AS10532 mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20100618 #14:25:35Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.61.188.0/22 descr: Rackspace origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: chris.hansell [at] rackspace.com 20180309 #18:02:49Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.61.189.0/24 descr: Rackspace origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: chris.hansell [at] rackspace.com 20180309 #18:05:06Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.61.190.0/23 descr: Rackspace origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: chris.hansell [at] rackspace.com 20180309 #18:08:38Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.216.64.0/18 descr: Rackspace, 5000 Walzem Road, San Antonio, TX 78218 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20110816 #14:32:39Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.71.8.0/24 descr: Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: pfroutan [at] rackspace.com 20000612 changed: noc [at] rackspace.com 20070529 #12:48:04(UTC) source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.71.44.0/23 descr: Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: pfroutan [at] rackspace.com 20000612 changed: noc [at] rackspace.com 20070529 #12:50:10(UTC) source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.235.4.0/22 descr: Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: pfroutan [at] rackspace.com 20000612 changed: noc [at] rackspace.com 20070529 #12:52:16(UTC) source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.235.16.0/23 descr: Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: pfroutan [at] rackspace.com 20000612 changed: noc [at] rackspace.com 20070529 #12:53:18(UTC) source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.163.244.0/22 descr: Rackspace Managed Hosting, 9725 Data point drive, Suite 100, San Antonio, TX 78229 origin: AS10532 admin-c: Tom Sands tech-c: Tom Sands notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: pfroutan [at] rackspace.com 20000612 changed: noc [at] rackspace.com 20070529 #12:56:51(UTC) source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.216.104.0/22 descr: Volusion origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20120202 #15:36:54Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.216.108.0/22 descr: Volusion IP Space origin: AS10532 notify: noc [at] rackspace.com mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20120202 #15:39:10Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2001:4803::/32 descr: Rackspace SAT origin: AS10532 mnt-by: MAINT-AS10532 changed: noc [at] rackspace.com 20100618 #14:12:29Z source: RADB last-modified: 2023-11-13T16:05:07Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source