These entries are queried from radb.net using whois, you can try my project getting these.
:AS50897 route: 192.44.75.0/24 descr: FR-IMTA-1 origin: AS50897 mnt-by: RENATER-MNT remarks: changed: rensvp [at] renater.fr 20100716 remarks: changed: rensvp [at] renater.fr 20191024 created: 2010-07-16T10:16:26Z last-modified: 2019-10-24T09:36:58Z source: RIPE 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: valid route: 192.108.115.0/24 descr: FR-IMTA-4 origin: AS50897 mnt-by: RENATER-MNT remarks: changed: rensvp [at] renater.fr 20100716 remarks: changed: rensvp [at] renater.fr 20191024 created: 2010-07-16T10:16:26Z last-modified: 2019-10-24T09:36:59Z source: RIPE 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: valid route: 192.108.116.0/24 descr: FR-IMTA-5 origin: AS50897 mnt-by: RENATER-MNT remarks: changed: ripe-dbm [at] ripe.net 19941121 remarks: changed: rensvp [at] renater.fr 20100716 remarks: changed: rensvp [at] renater.fr 20191024 created: 2010-07-16T14:21:04Z last-modified: 2019-10-24T09:36:59Z source: RIPE 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: valid route: 192.108.117.0/24 descr: FR-IMTA-6 origin: AS50897 mnt-by: RENATER-MNT remarks: changed: rensvp [at] renater.fr 20100716 remarks: changed: rensvp [at] renater.fr 20191024 created: 2010-07-16T10:16:26Z last-modified: 2019-10-24T09:36:59Z source: RIPE 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: valid route: 192.108.118.0/24 descr: FR-IMTA-7 origin: AS50897 mnt-by: RENATER-MNT remarks: changed: rensvp [at] renater.fr 20100716 remarks: changed: rensvp [at] renater.fr 20191024 created: 2010-07-16T10:16:26Z last-modified: 2019-10-24T09:36:59Z source: RIPE 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: valid route6: 2001:67c:1719::/48 descr: TELECOM BRETAGNE-Brest origin: AS50897 mnt-by: TELECOM-BRETAGNE-MNT mnt-by: IMT-ATLANTIQUE-MNT created: 2015-07-28T13:17:31Z last-modified: 2019-11-07T10:23:35Z source: RIPE 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