These entries are queried from radb.net using whois, you can try my project getting these.
:AS62190 route: 185.45.8.0/22 descr: Dropbox-EU origin: AS62190 mnt-by: DROPB-MNT notify: ripe-contact [at] dropbox.com created: 2014-06-09T17:35:18Z last-modified: 2014-06-09T17:35:18Z 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: 185.45.8.0/24 descr: Dropbox-EU-1 origin: AS62190 mnt-by: DROPB-MNT notify: ripe-contact [at] dropbox.com created: 2014-06-09T17:28:44Z last-modified: 2014-06-09T17:32:30Z 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: 185.45.9.0/24 descr: Dropbox-EU-2 origin: AS62190 mnt-by: DROPB-MNT notify: ripe-contact [at] dropbox.com created: 2014-06-09T17:30:52Z last-modified: 2014-06-09T17:30:52Z 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: 185.45.10.0/24 descr: Dropbox-EU-3 origin: AS62190 mnt-by: DROPB-MNT notify: ripe-contact [at] dropbox.com created: 2014-06-09T17:31:19Z last-modified: 2014-06-09T17:31:19Z 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: 185.45.11.0/24 descr: Dropbox-EU-4 origin: AS62190 mnt-by: DROPB-MNT notify: ripe-contact [at] dropbox.com created: 2014-06-09T17:31:41Z last-modified: 2014-06-09T17:31:41Z 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: 185.105.164.0/24 descr: Dropbox-CORP-EU-1 origin: AS62190 mnt-by: DROPB-MNT created: 2015-10-30T18:07:59Z last-modified: 2015-10-30T18:07:59Z 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: 185.105.164.0/24 origin: AS62190 descr: One Park Place, Floor 5 Hatch Street Upper Dublin 2, Ireland D02 E762 mnt-by: MAINT-AS54372 changed: clement [at] dropbox.com 20200410 #18:54:18Z source: RADB last-modified: 2023-11-13T16:00:19Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 185.105.165.0/24 origin: AS62190 descr: FRA DC mnt-by: MAINT-AS54372 changed: andrewb [at] dropbox.com 20190504 #11:39:18Z source: RADB last-modified: 2023-11-13T15:56:06Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a01:5a20:2::/48 descr: Dropbox Ireland One Park Place, Floor 5 Hatch Street Upper Dublin 2 origin: AS62190 mnt-by: MAINT-AS54372 changed: gilles [at] dropbox.com 20160623 #17:09:40Z source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a01:5a20:2000::/36 descr: Dropbox Ireland One Park Place, Floor 5 Hatch Street Upper Dublin 2 origin: AS62190 mnt-by: MAINT-AS54372 changed: andrewb [at] dropbox.com 20180821 #22:14:58Z source: RADB last-modified: 2023-11-13T15:54:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a01:5a20:2000::/48 descr: Dropbox Ireland One Park Place, Floor 5 Hatch Street Upper Dublin 2 origin: AS62190 mnt-by: MAINT-AS54372 changed: gilles [at] dropbox.com 20160623 #17:24:32Z source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2a01:5a20:2001::/48 descr: Dropbox Ireland One Park Place, Floor 5 Hatch Street Upper Dublin 2 origin: AS62190 mnt-by: MAINT-AS54372 changed: gilles [at] dropbox.com 20160623 #17:25:27Z source: RADB last-modified: 2023-11-13T15:49:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source