These entries are queried from radb.net using whois, you can try my project getting these.
:AS39709 route: 81.88.208.0/20 descr: EXTREME LTD origin: AS39709 mnt-by: MARYNONET-MNT created: 2006-04-13T11:03:58Z last-modified: 2006-04-13T11:03:58Z 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: 81.88.208.0/21 descr: IX origin: AS39709 mnt-by: MARYNONET-MNT created: 2010-01-26T20:46:34Z last-modified: 2010-01-26T20:46:34Z 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: 81.88.213.0/24 descr: NAT origin: AS39709 mnt-by: MARYNONET-MNT created: 2010-01-25T11:07:16Z last-modified: 2010-01-25T11:07:16Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route: 81.88.216.0/21 descr: IX origin: AS39709 mnt-by: MARYNONET-MNT created: 2010-01-26T20:48:08Z last-modified: 2010-01-26T20:48:08Z 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: 185.84.40.0/22 descr: EXTREME LTD origin: AS39709 mnt-by: MARYNONET-MNT created: 2015-01-15T10:46:39Z last-modified: 2015-01-15T10:46:39Z 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: 188.244.0.0/20 descr: EXTREME LTD origin: AS39709 mnt-by: MARYNONET-MNT created: 2009-07-07T14:32:53Z last-modified: 2009-07-07T14:32:53Z 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: 188.244.0.0/21 descr: EXTREME LTD origin: AS39709 mnt-by: MARYNONET-MNT created: 2017-11-17T11:27:31Z last-modified: 2017-11-17T11:27:31Z 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: 188.244.8.0/21 descr: EXTREME LTD origin: AS39709 mnt-by: MARYNONET-MNT created: 2017-11-17T11:28:15Z last-modified: 2017-11-17T11:28:15Z 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: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a03:93c0::/32 descr: Maryno.NET IPv6 origin: AS39709 mnt-by: MARYNONET-MNT created: 2012-12-07T23:36:28Z last-modified: 2012-12-07T23:36:28Z 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