These entries are queried from radb.net using whois, you can try my project getting these.
:AS30643 route: 12.15.24.0/24 descr: TTX.COM (via AT&T) origin: AS30643 mnt-by: IDCGLOBAL-MNT changed: bholloway [at] idcglobal.net 20050126 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.153.0/24 descr: TTX.COM origin: AS30643 mnt-by: IDCGLOBAL-MNT changed: bholloway [at] idcglobal.net 20050126 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.153.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS30643 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamcable.comcast.com 20180920 source: RADB last-modified: 2023-11-13T15:54:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.154.0/23 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS30643 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamcable.comcast.com 20180920 source: RADB last-modified: 2023-11-13T15:54:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.154.0/24 descr: TTX.COM origin: AS30643 mnt-by: IDCGLOBAL-MNT changed: bholloway [at] idcglobal.net 20050126 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.156.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mount Laurel, NJ 08054 origin: AS30643 remarks: Proxy entry for EDI customer mnt-by: MAINT-AS7922 changed: courtney_smith [at] nospamcable.comcast.com 20180920 source: RADB last-modified: 2023-11-13T15:54:43Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.156.0/24 descr: TTX.COM origin: AS30643 mnt-by: IDCGLOBAL-MNT changed: bholloway [at] idcglobal.net 20050126 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.153.158.0/23 origin: AS30643 descr: QTS Proxy - Offsite, LLC mnt-by: MAINT-QTS changed: marc.garrison [at] qtsdatacenters.com 20220628 #16:30:54Z source: RADB last-modified: 2023-11-13T16:11:41Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source