These entries are queried from radb.net using whois, you can try my project getting these.
:AS14721 route: 8.12.245.0/24 descr: Two Rivers Trading origin: AS14721 mnt-by: MAINT-AS14721 changed: jrn1 [at] layer7consulting.com 20130301 #23:25:36Z source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.86.112.0/20 descr: route update via web origin: AS14721 mnt-by: LEVEL3-MNT changed: Kanagarajan.Ranganathan [at] level3.com 20090514 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.86.116.0/22 descr: Secondary origin: AS14721 admin-c: JNA33-ARIN tech-c: NOC1905-ARIN notify: noc [at] layer7networks.net mnt-by: MAINT-AS14721 changed: jrn1 [at] layer7consulting.com 20130402 #14:35:16Z source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.86.116.0/23 descr: Layer 7 origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20111213 source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.86.118.0/23 descr: MBF/Monroe origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20080202 #18:49:39(UTC) source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.86.118.0/24 descr: Layer 7 origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20111213 source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.86.119.0/24 descr: Monroe origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20080202 #18:48:35(UTC) source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.91.152.0/22 descr: Layer 7 origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20111213 source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.91.152.0/24 descr: Chicago 2 origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20080814 #02:21:19Z source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.91.153.0/24 descr: Layer 7 Temp origin: AS14721 mnt-by: MAINT-AS14721 changed: jn [at] flytrading.com 20111212 #03:32:52Z source: RADB last-modified: 2023-11-13T15:46:17Z rpki-ov-state: valid route: 208.91.155.0/24 descr: Layer 7 - NJ origin: AS14721 mnt-by: MAINT-AS14721 changed: jnavitsky [at] layer7networks.net 20150407 #03:39:25Z source: RADB last-modified: 2023-11-13T15:47:22Z rpki-ov-state: valid