These entries are queried from radb.net using whois, you can try my project getting these.
:AS37571 route: 197.231.252.0/22 descr: Proxy Route-Object entry for Information Technology Management origin: AS37571 mnt-by: MI75929-MNT created: 2014-11-25T07:49:05Z last-modified: 2018-09-04T18:01:52Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.252.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS37571 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.252.0/24 descr: Proxy Route-Object entry for Information Technology Management origin: AS37571 mnt-by: MI75929-MNT created: 2013-03-27T13:48:13Z last-modified: 2018-09-04T17:37:11Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.253.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS37571 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.253.0/24 descr: Proxy Route-Object entry for Information Technology Management origin: AS37571 mnt-by: MI75929-MNT created: 2013-03-27T13:49:18Z last-modified: 2018-09-04T17:37:11Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.254.0/24 descr: Proxy Route-Object entry for Information Technology Management origin: AS37571 mnt-by: MI75929-MNT created: 2014-11-20T17:49:40Z last-modified: 2018-09-04T18:01:41Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.255.0/24 descr: Proxy Route-Object entry for Information Technology Management origin: AS37571 mnt-by: RIPE-NCC-LOCKED-MNT created: 2014-05-19T11:56:41Z last-modified: 2018-09-04T17:55:19Z source: RIPE-NONAUTH remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.231.255.0/24 descr: Proxy registration to prevent harm from ARIN-NONAUTH shutdown origin: AS37571 mnt-by: MAINT-AS7034 changed: kennethfinnegan2007 [at] gmail.com 20220404 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source