These entries are queried from radb.net using whois, you can try my project getting these.
:AS39882 route: 198.37.58.0/24 descr: Azure-POC origin: AS39882 remarks: mnt-by: CAS-RIPE-MNT mnt-by: NN57406-MNT created: 2017-12-05T08:43:49Z last-modified: 2019-08-20T04:49:46Z 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: 217.147.112.0/22 descr: Cassava Enterprises LTD origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2006-06-28T11:03:22Z last-modified: 2006-06-28T11:03:22Z 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 route: 217.147.112.0/24 origin: AS39882 mnt-by: CAS-RIPE-MNT mnt-by: NN57406-MNT created: 2020-04-08T13:35:32Z last-modified: 2020-04-08T13:35:32Z 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 route: 217.147.113.0/24 origin: AS39882 mnt-by: CAS-RIPE-MNT mnt-by: NN57406-MNT created: 2020-03-23T08:27:55Z last-modified: 2020-03-25T15:02:19Z 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 route: 217.147.116.0/22 descr: CAS-RIPE-GIB origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2011-03-13T14:08:43Z last-modified: 2011-03-13T14:08:43Z 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 route: 217.147.116.0/24 descr: Cassava Enterprises LTD origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2006-06-28T11:04:23Z last-modified: 2006-06-28T11:04:23Z 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 route: 217.147.118.0/24 descr: origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2011-02-28T12:54:32Z last-modified: 2011-02-28T12:54:32Z 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 route: 217.147.120.0/22 descr: CASNET-IRE origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2008-03-19T14:43:07Z last-modified: 2008-03-19T14:43:07Z 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 route: 217.147.123.0/24 descr: 217.147.123.0 Adv Route origin: AS39882 mnt-by: CAS-RIPE-MNT created: 2015-01-13T12:45:39Z last-modified: 2015-01-13T12:45:39Z 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