These entries are queried from radb.net using whois, you can try my project getting these.
:AS15635 route: 77.238.184.0/23 descr: Yahoo-EU-NET origin: AS15635 mnt-by: YAHOO-MNT created: 2007-10-30T14:12:42Z last-modified: 2007-10-30T14:12:42Z 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: 87.248.104.0/21 descr: Yahoo UKL block origin: AS15635 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: 87.248.104.0/21 descr: Yahoo-EU-NET origin: AS15635 mnt-by: YAHOO-MNT created: 2005-10-21T12:12:49Z last-modified: 2005-10-21T12:12:49Z 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: 195.50.106.0/24 descr: Yahoo UKL block origin: AS15635 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: 195.50.106.0/24 descr: Yahoo-EU-NET origin: AS15635 mnt-by: LEVEL3-MNT created: 2003-09-25T12:50:34Z last-modified: 2003-09-25T12:50:34Z 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: 212.82.96.0/22 descr: Yahoo-EU-NET origin: AS15635 mnt-by: YAHOO-MNT created: 2009-06-08T14:16:07Z last-modified: 2009-06-08T14:16:07Z 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: 217.12.0.0/20 descr: Yahoo-EU-NET origin: AS15635 mnt-by: YAHOO-MNT created: 1970-01-01T00:00:00Z last-modified: 2001-09-22T09:33:24Z 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: 217.12.0.0/23 descr: LOA streaming origin: AS15635 remarks: for LOA Streaming notify: network [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: spujani [at] yahoo-inc.com 20150608 source: RADB last-modified: 2023-11-13T15:47:42Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 217.146.176.0/21 descr: Yahoo-EU-NET origin: AS15635 mnt-by: YAHOO-MNT created: 2004-10-07T22:32:58Z last-modified: 2004-10-07T22:32:58Z 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 route6: 2a00:1288:12c::/48 descr: Yahoo IPv6 block LOA origin: AS15635 notify: netops [at] yahoo-inc.com mnt-by: MAINT-YAHOO changed: batta [at] yahoo-inc.com 20150409 source: RADB last-modified: 2023-11-13T15:47:22Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source