These entries are queried from radb.net using whois, you can try my project getting these.
:AS8121 route: 44.74.128.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.13.128.0/18 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 64.13.128.0/21 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.22.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.23.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.24.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.64.25.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 71.19.220.0/23 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 71.19.236.0/22 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 130.128.0.0/16 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 130.129.0.0/16 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 155.211.0.0/16 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 184.28.138.0/23 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.102.231.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 193.84.87.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.17.5.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.17.128.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.102.244.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.135.48.0/20 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.147.203.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.180.182.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.207.204.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.46.16.0/20 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.46.16.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.46.30.0/23 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.74.220.0/23 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.74.220.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.74.221.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.89.252.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.78.232.0/21 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.81.61.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.81.62.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.81.63.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.88.154.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.88.155.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.88.156.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.88.157.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.123.125.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.47.112.0/20 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.211.172.0/24 descr: Spectrum Proxy Registration origin: AS8121 mnt-by: MAINT-AS11404 changed: mzulfiqar [at] wavebroadband.com 20160418 #19:14:05Z source: RADB last-modified: 2023-11-13T15:51:16Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 216.245.15.0/24 descr: cus prefix origin: AS8121 mnt-by: MAINT-TOWARDEX changed: smc [at] level3.com 20140522 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source