These entries are queried from radb.net using whois, you can try my project getting these.
:AS20577 route: 62.189.50.0/24 descr: PNAP-LON Tradeweb route origin: AS20577 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090312 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.216.116.0/24 descr: PNAP-LON tradewebeur route origin: AS20577 mnt-by: MAINT-AS1828 changed: dennisc [at] internap.com 20100528 source: RADB last-modified: 2023-11-13T16:14:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 91.216.116.0/24 descr: Tradeweb origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2015-12-23T16:01:56Z last-modified: 2016-04-11T09:48:47Z 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: 185.143.184.0/22 origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2022-01-21T12:40:00Z last-modified: 2022-09-26T14:21:54Z 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: 185.143.184.0/24 descr: PNAP-LON 3366112 origin: AS20577 mnt-by: MAINT-AS1828 changed: amalik [at] internap.com 20180924 source: RADB last-modified: 2023-11-13T16:16:51Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.143.187.0/24 origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2018-10-03T16:19:34Z last-modified: 2018-10-03T16:19:34Z 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: 193.108.18.0/24 descr: PNAP-LON Tradeweb route origin: AS20577 mnt-by: MAINT-AS1828 changed: scottl [at] internap.com 20090312 source: RADB last-modified: 2023-11-13T16:14:15Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 193.108.18.0/24 descr: Tradeweb origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2015-12-29T13:25:28Z last-modified: 2016-04-11T10:04:13Z 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: 195.254.178.0/23 descr: Tradeweb origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2015-12-29T13:27:12Z last-modified: 2016-04-11T09:56:52Z 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: 195.254.178.0/24 descr: Tradeweb origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2016-04-29T16:31:31Z last-modified: 2016-04-29T16:31:31Z 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: 195.254.178.0/24 descr: PNAP-LON tradewebeur route origin: AS20577 mnt-by: MAINT-AS1828 changed: dennisc [at] internap.com 20100528 source: RADB last-modified: 2023-11-13T16:14:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 195.254.179.0/24 descr: Tradeweb origin: AS20577 mnt-by: uk-tradeweb-1-mnt created: 2016-04-29T16:32:18Z last-modified: 2016-04-29T16:32:18Z 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: 195.254.179.0/24 descr: PNAP-LON tradewebeur route origin: AS20577 mnt-by: MAINT-AS1828 changed: dennisc [at] internap.com 20100528 source: RADB last-modified: 2023-11-13T16:14:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source