These entries are queried from radb.net using whois, you can try my project getting these.
:AS42173 route: 77.238.160.0/20 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2007-05-03T14:39:46Z last-modified: 2007-05-03T14:39:46Z 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: 77.238.160.0/20 descr: Yahoo CH1 block origin: AS42173 remarks: block notify: netops [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: fiennes [at] yahoo-inc.com 20100526 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 87.248.120.0/21 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2007-04-24T13:04:14Z last-modified: 2007-04-24T13:04:14Z 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: 188.125.72.0/21 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2009-10-19T08:45:06Z last-modified: 2009-10-19T08:45:06Z 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: 188.125.72.0/21 descr: Yahoo CH1 origin: AS42173 remarks: notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: nevin [at] yahoo-inc.com 20130820 source: RADB last-modified: 2023-11-13T15:45:34Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 188.125.88.0/22 descr: Yahoo! CH1 Block origin: AS42173 remarks: Yahoo! CH1 Block notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: batta [at] yahoo-inc.com 20110118 source: RADB last-modified: 2023-11-13T15:41:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 194.88.69.0/24 descr: Yahoo CH1 block origin: AS42173 remarks: block notify: netops [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: fiennes [at] yahoo-inc.com 20100526 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 194.88.69.0/24 descr: Yahoo-EU-NET origin: AS42173 remarks: Abuse contact is: abuse [at] Level3.com notify: routing [at] Level3.net mnt-by: LEVEL3-MNT created: 2007-09-11T16:01:43Z last-modified: 2010-04-06T22:00:24Z 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: 195.50.88.0/24 descr: CH1 datacenter origin: AS42173 remarks: for CH1 datacenter notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: vgade [at] yahoo-inc.com 20140225 source: RADB last-modified: 2023-11-13T15:46:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.82.100.0/22 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2009-06-08T14:19:30Z last-modified: 2009-06-08T14:19:30Z 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: 212.82.102.0/24 descr: Yahoo CH1 origin: AS42173 notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: nevin [at] yahoo-inc.com 20140212 source: RADB last-modified: 2023-11-13T15:46:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.82.112.0/20 descr: Yahoo CH1 block origin: AS42173 remarks: base block notify: netops [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: fiennes [at] yahoo-inc.com 20100526 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 212.82.112.0/20 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2008-07-22T14:42:31Z last-modified: 2008-07-22T14:42:31Z 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: 212.82.120.0/21 descr: Yahoo-EU-NET origin: AS42173 mnt-by: YAHOO-MNT created: 2008-03-19T16:42:07Z last-modified: 2008-03-19T16:42:07Z 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: 217.163.20.0/23 descr: Yahoo CH1 block origin: AS42173 remarks: block notify: netops [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: fiennes [at] yahoo-inc.com 20100526 source: RADB last-modified: 2023-11-13T15:40:58Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a00:1288:74::/46 descr: Yahoo CH1 origin: AS42173 notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: kkevin [at] yahoo-inc.com 20150428 source: RADB last-modified: 2023-11-13T15:47:25Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source