These entries are queried from radb.net using whois, you can try my project getting these.
:AS18806 route: 63.228.156.0/23 descr: Level3-DMZ origin: AS18806 mnt-by: ENSYNCH-MNT changed: rpetersen [at] ensynch.com 20010108 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.230.240.0/23 descr: Level3-DMZ origin: AS18806 mnt-by: ENSYNCH-MNT changed: rpetersen [at] ensynch.com 20010108 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.154.10.0/23 descr: Level3-DMZ origin: AS18806 mnt-by: ENSYNCH-MNT changed: rpetersen [at] ensynch.com 20010108 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.181.240.0/20 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211102 source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 66.192.152.0/21 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211015 source: RADB last-modified: 2023-11-13T16:08:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.218.32.0/20 descr: OneNeck IT Services Corporation 5301 North Pima Road Suite 100 Scottsdale, AZ 85250 US origin: AS18806 mnt-by: MNT-ONENE-6 changed: robert.vyslouzil [at] oneneck.com 20091105 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.218.32.0/20 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211015 source: RADB last-modified: 2023-11-13T16:08:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.7.16.0/20 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211015 source: RADB last-modified: 2023-11-13T16:08:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.7.16.0/20 descr: OneNeck IT Services Corporation 5301 North Pima Road Suite 100 Scottsdale, AZ 85250 US origin: AS18806 mnt-by: MNT-ONENE-6 changed: robert.vyslouzil [at] oneneck.com 20091105 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.7.17.0/24 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211102 source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.7.17.0/24 descr: OneNeck IT Services Corporation descr: 5301 North Pima Road Suite 100 descr: Scottsdale, AZ 85250 descr: US origin: AS18806 mnt-by: MNT-ONENE-6 remarks: IO PHX changed: robert.vyslouzil [at] oneneck.com 20091217 source: ARIN rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.9.0.0/19 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211015 source: RADB last-modified: 2023-11-13T16:08:33Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.108.142.0/24 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211102 source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.224.160.0/23 descr: Level3-DMZ origin: AS18806 mnt-by: ENSYNCH-MNT changed: rpetersen [at] ensynch.com 20010108 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 207.224.163.0/24 descr: Level3-DMZ origin: AS18806 mnt-by: ENSYNCH-MNT changed: rpetersen [at] ensynch.com 20010108 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.49.168.0/24 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211102 source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.76.24.0/23 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211102 source: RADB last-modified: 2023-11-13T16:08:36Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.183.64.0/20 origin: AS18806 descr: Iron Mountain Data Centers, LLC One Federal Street Boston, MA 02111 United States ---Customer Proxy Object for upstream filter list--- admin-c: IMDC-Network Operations tech-c: IMDC-Network Operations notify: imdcnetops [at] ironmountain.com mnt-by: MAINT-AS12025 changed: ammon.guernsey [at] ironmountain.com 20211103 source: RADB last-modified: 2023-11-13T16:08:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source