These entries are queried from radb.net using whois, you can try my project getting these.
:AS50155 route: 87.252.253.0/24 origin: AS50155 mnt-by: BYGIS-MNT created: 2016-11-21T07:33:19Z last-modified: 2016-11-21T07:33:19Z 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: 178.172.128.0/24 descr: AS-GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-05-04T15:36:59Z last-modified: 2010-07-27T13:45:41Z 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: 178.172.130.0/24 descr: AS-GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-05-04T15:37:00Z last-modified: 2010-07-27T13:45:41Z 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: 178.172.131.0/24 descr: AS-GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-05-04T15:37:00Z last-modified: 2010-07-27T13:45:41Z 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: 178.172.196.0/24 descr: GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-12-20T12:58:25Z last-modified: 2010-12-20T12:59:58Z 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: 178.172.197.0/24 descr: GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-12-20T12:58:25Z last-modified: 2010-12-20T12:59:58Z 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: 178.172.198.0/24 descr: GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-12-20T12:58:25Z last-modified: 2010-12-20T12:59:58Z 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: 178.172.199.0/24 descr: GR-INFO-NET origin: AS50155 mnt-by: BYGIS-MNT created: 2010-12-20T12:58:25Z last-modified: 2010-12-20T12:59:58Z 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