These entries are queried from radb.net using whois, you can try my project getting these.
:AS37235 route: 41.74.192.0/20 descr: Mimecast SA Primary assignment origin: AS37235 mnt-by: MIMECAST-MNT created: 2011-12-09T20:42:59Z last-modified: 2018-09-04T17:00:10Z source: RIPE-NONAUTH 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: 41.74.192.0/22 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.192.0/22 descr: Mimecast SA IPR1 origin: AS37235 mnt-by: MIMECAST-MNT created: 2010-09-30T13:27:14Z last-modified: 2018-09-04T16:21:00Z source: RIPE-NONAUTH 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: 41.74.192.0/22 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20180714 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.192.0/24 origin: AS37235 descr: Mimecast SA admin-c: MCNO-AFRINIC tech-c: MCNO-AFRINIC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20230112 source: RADB last-modified: 2023-11-13T16:13:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.193.0/24 origin: AS37235 descr: Mimecast SA admin-c: MCNO-AFRINIC tech-c: MCNO-AFRINIC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20230112 source: RADB last-modified: 2023-11-13T16:13:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.194.0/24 origin: AS37235 descr: Mimecast SA admin-c: MCNO-AFRINIC tech-c: MCNO-AFRINIC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20230112 source: RADB last-modified: 2023-11-13T16:13:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.195.0/24 origin: AS37235 descr: Mimecast SA admin-c: MCNO-AFRINIC tech-c: MCNO-AFRINIC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20230112 source: RADB last-modified: 2023-11-13T16:13:30Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.196.0/22 descr: Mimecast SA IPR1 origin: AS37235 mnt-by: MIMECAST-MNT created: 2010-09-30T13:27:49Z last-modified: 2018-09-04T16:21:00Z source: RIPE-NONAUTH 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: 41.74.196.0/22 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.196.0/22 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20180714 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.196.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.197.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.198.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.199.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.200.0/22 descr: Mimecast SA IPR2 origin: AS37235 mnt-by: MIMECAST-MNT created: 2011-12-09T20:43:41Z last-modified: 2018-09-04T17:00:10Z source: RIPE-NONAUTH 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: 41.74.200.0/23 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.200.0/23 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT created: 2018-06-15T18:54:31Z last-modified: 2018-09-04T19:21:53Z source: RIPE-NONAUTH 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: 41.74.200.0/23 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20180714 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.200.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.201.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.202.0/24 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT created: 2018-06-15T18:54:31Z last-modified: 2018-09-04T19:21:54Z source: RIPE-NONAUTH 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: 41.74.202.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.202.0/24 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20180714 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.203.0/24 descr: MIMECAST-ANYCAST origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20170630 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.203.0/24 origin: AS37235 mnt-by: MIMECAST-MNT created: 2018-07-14T13:03:38Z last-modified: 2018-09-04T19:31:04Z source: RIPE-NONAUTH 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: 41.74.204.0/22 descr: Mimecast SA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20180714 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.204.0/22 descr: Mimecast SA IPR2 origin: AS37235 mnt-by: MIMECAST-MNT created: 2011-12-09T20:44:26Z last-modified: 2018-09-04T17:00:10Z source: RIPE-NONAUTH 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: 41.74.204.0/22 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.204.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.205.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.206.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 41.74.207.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: srgonuguntla [at] mimecast.com 20230220 source: RADB last-modified: 2023-11-13T16:15:20Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 147.28.38.0/24 origin: AS37235 mnt-by: MCSL-RIPE-MNT created: 2023-12-04T15:42:15Z last-modified: 2023-12-04T15:42:15Z 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: valid route: 170.10.142.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20200227 source: RADB last-modified: 2023-11-13T16:00:01Z rpki-ov-state: valid route: 216.145.218.0/24 origin: AS37235 descr: Mimecast tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20191218 source: RADB last-modified: 2023-11-13T15:59:22Z rpki-ov-state: valid route: 216.145.218.0/24 origin: AS37235 descr: 191 Spring St Lexington MA 02421 United States admin-c: CHARL197-ARIN tech-c: MIMEC-ARIN mnt-by: MNT-MNA-95 created: 2022-08-11T16:32:31Z last-modified: 2023-08-16T05:14:31Z source: ARIN rpki-ov-state: valid route: 216.145.222.0/24 origin: AS37235 descr: 191 Spring St Lexington MA 02421 United States admin-c: CHARL197-ARIN tech-c: MIMEC-ARIN mnt-by: MNT-MNA-95 created: 2022-08-11T16:49:08Z last-modified: 2023-08-16T05:14:31Z source: ARIN rpki-ov-state: valid route: 216.145.222.0/24 origin: AS37235 descr: Mimecast admin-c: MCNA-NOC tech-c: MCNA-NOC notify: netops [at] mimecast.com mnt-by: MAINT-AS42427 changed: lsevcik [at] mimecast.com 20191218 source: RADB last-modified: 2023-11-13T15:59:22Z rpki-ov-state: valid route6: 2a02:5be0:8::/48 origin: AS37235 mnt-by: MCSL-RIPE-MNT created: 2023-12-04T16:52:10Z last-modified: 2023-12-04T16:52:10Z 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: valid route6: 2c0f:f1e0::/48 descr: MIMECAST-IPv6-PA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20181119 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2c0f:f1e0:1::/48 descr: MIMECAST-IPv6-PA origin: AS37235 mnt-by: MIMECAST-MNT changed: *** [at] mimecast.com 20181119 source: AFRINIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source