These entries are queried from radb.net using whois, you can try my project getting these.
:AS37531 route: 197.214.0.0/18 origin: AS37531 descr: Airtel_Niger mnt-by: Airtel-Niger-MNT changed: *** [at] africa.airtel.com 20211115 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 197.214.0.0/18 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2014-08-11T17:21:16Z last-modified: 2018-09-04T17:58:44Z source: RIPE-NONAUTH org: ORG-AN88-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: 197.214.2.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-03-02T15:48:41Z last-modified: 2018-09-04T18:23:11Z 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: 197.214.3.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-03-02T15:50:02Z last-modified: 2018-09-04T18:23:11Z 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: 197.214.5.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-03-22T16:57:50Z last-modified: 2018-09-04T18:23:45Z 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: 197.214.9.0/24 origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-03-24T18:22:50Z last-modified: 2018-09-04T18:23:53Z 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: 197.214.10.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-03-22T16:56:59Z last-modified: 2018-09-04T18:23:45Z 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: 197.214.11.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-04-06T16:18:01Z last-modified: 2018-09-04T18:24:39Z 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: 197.214.12.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-04-06T16:21:08Z last-modified: 2018-09-04T18:24:40Z 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: 197.214.13.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-04-06T16:22:09Z last-modified: 2018-09-04T18:24:40Z 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: 197.214.14.0/24 descr: Airtel Niger origin: AS37531 mnt-by: airtel_niger_mnt created: 2016-04-06T16:23:02Z last-modified: 2018-09-04T18:24:40Z 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: 197.214.15.0/24 descr: Airtel Niger origin: AS37531 remarks: mnt-by: airtel_niger_mnt created: 2017-06-27T12:35:44Z last-modified: 2018-09-04T18:51:41Z 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: 197.214.16.0/24 descr: Airtel Niger origin: AS37531 remarks: mnt-by: airtel_niger_mnt created: 2017-06-27T12:42:19Z last-modified: 2018-09-04T18:51:41Z 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 route6: 2c0f:f8c8::/32 origin: AS37531 descr: Airtel_Niger mnt-by: Airtel-Niger-MNT changed: *** [at] africa.airtel.com 20211115 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source