These entries are queried from radb.net using whois, you can try my project getting these.
:AS4208 route: 66.213.160.0/20 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 69.87.128.0/19 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.120.102.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS4208 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamcable.comcast.com 20180821 source: RADB last-modified: 2023-11-13T15:54:28Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.144.68.0/24 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.170.116.0/23 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.177.184.0/21 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.253.132.0/23 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 205.231.88.0/21 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.64.88.0/23 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.67.160.0/21 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 206.114.32.0/19 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.224.0.0/20 descr: ADDED FOR - AS4208 origin: AS4208 mnt-by: I123-MNT changed: rpd [at] 123.net 20081023 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 209.140.192.0/18 origin: AS4208 descr: Route for downstream customer, iServ/Hope-College mnt-by: MAINT-AS26554 changed: toc [at] ussignal.com 20220118 #19:13:46Z source: RADB last-modified: 2023-11-13T16:09:08Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source