These entries are queried from radb.net using whois, you can try my project getting these.
:AS38943 route: 149.244.0.0/16 descr: KNORRB-LAN descr: Knorr-Bremse AG descr: Muenchen Germany holes: 149.244.252.0/24 origin: AS38943 notify: noc [at] vianetworks.de mnt-by: VIADE-MNT mnt-by: UUNETDE-I created: 2006-01-30T13:11:54Z last-modified: 2013-12-18T11:43:36Z 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: 149.244.211.0/24 origin: AS38943 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: lramirez [at] akamai.com 20210514 #21:14:11Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.244.249.0/24 origin: AS38943 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: lramirez [at] akamai.com 20210514 #21:15:55Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.244.251.0/24 origin: AS38943 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: lramirez [at] akamai.com 20210514 #21:17:09Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 149.244.254.0/23 origin: AS38943 descr: Akamai Technologies, Inc. mnt-by: MAINT-AS32787 changed: lramirez [at] akamai.com 20210514 #21:18:26Z source: RADB last-modified: 2023-11-13T16:13:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source