These entries are queried from radb.net using whois, you can try my project getting these.
:AS44074 route: 145.223.0.0/16 descr: Prolexic Technologies, Inc. origin: AS44074 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: wcranmer [at] prolexic.com 20140507 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 145.223.0.0/16 descr: DELTA Fiber Nederland customer: Royal FloraHolland origin: AS44074 mnt-by: KABELFOON-MNT mnt-by: AS15542-MNT mnt-by: CBIZZ-MNT created: 2008-04-03T06:46:19Z last-modified: 2022-09-21T07:12:38Z 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: 145.223.192.0/21 descr: DELTA Fiber Nederland customer: Verenigde Bloemenveiling Aalsmeer origin: AS44074 mnt-by: KABELFOON-MNT created: 2008-04-25T08:23:05Z last-modified: 2020-01-19T08:57:51Z 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: 145.223.200.0/24 descr: Prolexic Technologies, Inc. origin: AS44074 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: erodriguez [at] prolexic.com 20140409 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 145.223.203.0/24 descr: Prolexic Technologies, Inc. origin: AS44074 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: erodriguez [at] prolexic.com 20140409 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 145.223.220.0/24 descr: Prolexic Technologies, Inc. origin: AS44074 mnt-by: MAINT-AS32787 notify: hostmaster [at] prolexic.com changed: erodrigu [at] akamai.com 20140502 source: RADB last-modified: 2023-11-13T16:13:32Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source