These entries are queried from radb.net using whois, you can try my project getting these.
:AS13464 route: 149.7.54.0/24 descr: Centerbridge Capital Partners LLC origin: AS13464 mnt-by: CBP-LLC mnt-by: COGENT-ROUTE-MNT created: 2014-06-05T19:22:10Z last-modified: 2018-09-04T17:56:52Z 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: 185.53.237.0/24 descr: CENTERBRIDGE CAPITAL PARTNERS origin: AS13464 mnt-by: CBP-LLC created: 2015-08-12T13:58:03Z last-modified: 2015-08-12T13:58:03Z 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: 192.154.118.0/24 descr: Centerbridge routes origin: AS13464 mnt-by: MAINT-AS17378 changed: peering [at] xand.com 20140606 #21:12:37Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source