These entries are queried from radb.net using whois, you can try my project getting these.
:AS23339 route: 198.100.0.0/22 descr: Marymount University - NETBLK-198 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.100.0.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS23339 remarks: Proxy add for customer Marymount University mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20180116 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.100.0.0/23 descr: Marymount University - NETBLK-198.100.0.0/23 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.100.2.0/23 descr: Marymount University - NETBLK-198.100.2.0/23 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.111.96.0/22 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS23339 remarks: Proxy add for customer Marymount University mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20180116 source: RADB last-modified: 2023-11-13T15:54:23Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.111.96.0/22 descr: Marymount University - NETBLK-199 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.111.96.0/23 descr: Marymount University - NETBLK-199.111.96.0/23 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.111.98.0/23 descr: Marymount University - NETBLK-199.111.98.0/23 origin: AS23339 mnt-by: MAINT-AS23339 changed: dlutes [at] marymount.edu 20231009 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source