These entries are queried from radb.net using whois, you can try my project getting these.
:AS50957 route: 5.153.248.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2012-07-26T08:13:45Z last-modified: 2013-04-12T15:15:01Z 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: 31.25.184.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2013-06-19T20:22:15Z last-modified: 2013-06-19T20:22:15Z 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: 37.35.72.0/21 descr: Who-Remembers-Me.com Limited origin: AS50957 mnt-by: MEMSET created: 2013-06-19T20:58:53Z last-modified: 2013-06-19T20:58:53Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 37.128.128.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2013-06-19T09:22:53Z last-modified: 2013-06-19T09:22:53Z 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: 77.73.0.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2013-06-19T09:07:53Z last-modified: 2013-06-19T09:07:53Z 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: 77.74.120.0/23 descr: Who-Remembers-Me.com Limited origin: AS50957 mnt-by: MEMSET created: 2013-06-19T20:59:44Z last-modified: 2013-06-19T20:59:44Z 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: 77.74.122.0/24 descr: Who-Remembers-Me.com Limited origin: AS50957 mnt-by: MEMSET created: 2013-06-12T14:54:21Z last-modified: 2013-06-12T14:54:21Z 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 route: 78.31.104.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2013-06-19T20:25:45Z last-modified: 2013-06-19T20:25:45Z 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: 89.200.136.0/21 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2013-06-19T20:27:36Z last-modified: 2013-06-19T20:27:36Z 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: valid route: 185.98.196.0/22 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2015-05-06T12:52:16Z last-modified: 2015-05-06T12:52:16Z 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: 213.170.0.0/19 descr: Memset Ltd origin: AS50957 mnt-by: MEMSET created: 2016-01-27T10:45:03Z last-modified: 2016-01-27T10:45:03Z 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: valid route6: 2a02:24e0::/32 descr: MEMSET IPv6 origin: AS50957 mnt-by: MEMSET created: 2011-02-14T13:53:15Z last-modified: 2011-02-14T13:53:15Z 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