These entries are queried from radb.net using whois, you can try my project getting these.
:AS20504 route: 217.118.160.0/20 descr: RTL Nederland origin: AS20504 mnt-by: MNT-HMG created: 2009-10-26T10:14:26Z last-modified: 2017-02-28T15:37:11Z 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 route: 217.118.160.0/20 descr: AS20504 proxy-registered route by Cogent origin: AS20504 remarks: Proxy-registered route object remarks: for Cogent customer notify: neteng [at] cogentco.com mnt-by: MAINT-AS174 changed: neteng [at] cogentco.com 20040517 source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: valid route: 217.118.160.0/24 descr: RTL origin: AS20504 mnt-by: MNT-HMG mnt-by: MNT-RA1596 mnt-lower: MNT-RA1596 mnt-routes: MNT-RA1596 created: 2008-02-18T08:43:50Z last-modified: 2018-02-14T12:37:57Z 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 route: 217.118.160.0/24 origin: AS20504 descr: Prolexic Technologies, Inc. mnt-by: MAINT-AS32787 changed: dborovyk [at] akamai.com 20190220 #12:54:40Z source: RADB last-modified: 2023-11-13T16:13:34Z rpki-ov-state: valid route: 217.118.162.0/24 descr: RTL origin: AS20504 mnt-by: MNT-HMG mnt-by: MNT-RA1596 mnt-routes: MNT-RA1596 mnt-lower: MNT-RA1596 created: 2008-02-18T08:54:40Z last-modified: 2018-02-14T12:35:53Z 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 route: 217.118.162.0/24 origin: AS20504 descr: Prolexic Technologies, Inc. mnt-by: MAINT-AS32787 changed: dborovyk [at] akamai.com 20190220 #12:55:35Z source: RADB last-modified: 2023-11-13T16:13:34Z rpki-ov-state: valid route: 217.118.167.0/24 descr: Buienradar_BV origin: AS20504 mnt-by: MNT-HMG created: 2012-03-12T15:26:22Z last-modified: 2012-03-12T15:26:22Z 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 route: 217.118.167.0/24 origin: AS20504 descr: Prolexic Technologies, Inc. mnt-by: MAINT-AS32787 changed: dborovyk [at] akamai.com 20190220 #12:56:35Z source: RADB last-modified: 2023-11-13T16:13:34Z rpki-ov-state: valid route6: 2a03:d680::/48 descr: RTL interactive Frankfurt origin: AS20504 mnt-by: MNT-HMG created: 2012-06-06T13:11:21Z last-modified: 2012-06-06T13:11:21Z 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