These entries are queried from radb.net using whois, you can try my project getting these.
:AS20873 route: 213.156.70.0/24 descr: P5 DialUp Network origin: AS20873 notify: ser [at] softtronik.com mnt-by: STK-MNT created: 2005-09-06T16:27:31Z last-modified: 2005-09-06T16:27:31Z 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: 213.156.71.0/24 descr: P5 DialUp Network origin: AS20873 notify: ser [at] softtronik.com mnt-by: STK-MNT created: 2005-09-06T16:27:31Z last-modified: 2005-09-06T16:27:31Z 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