These entries are queried from radb.net using whois, you can try my project getting these.
:AS62383 route: 44.144.0.0/16 descr: AMPRNET Belgium origin: AS62383 mnt-by: LDSVOF mnt-by: SAXGOD-MNT mnt-by: VERIXI created: 2014-09-24T22:43:36Z last-modified: 2018-09-04T17:59:38Z 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: 185.18.150.0/24 descr: WIRELESSBELGIE-NET origin: AS62383 mnt-by: LDSVOF mnt-by: SAXGOD-MNT created: 2014-09-11T11:06:38Z last-modified: 2014-09-11T11:06:49Z 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: 188.210.92.0/24 descr: WIRELESSBELGIE-NET origin: AS62383 mnt-by: LDSVOF created: 2014-10-04T20:27:53Z last-modified: 2019-04-06T23:27:27Z 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: 2a04:b80::/48 descr: Wirelessbelgie origin: AS62383 mnt-by: ldsvof created: 2015-01-22T21:41:13Z last-modified: 2015-01-22T21:41:13Z 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