These entries are queried from radb.net using whois, you can try my project getting these.
:AS26979 route: 67.199.252.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS26979 remarks: Proxy add for customer LANDesk SOFTWARE INC mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20170526 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.65.141.0/24 descr: NextWeb: R3-Laureate/Sylvan origin: AS26979 notify: routing [at] nextweb.net mnt-by: MAINT-AS16467 changed: charlie [at] nextweb.net 20040924 #19:51:49(UTC) source: RADB last-modified: 2023-11-13T15:39:35Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 192.206.100.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS26979 remarks: Proxy add for customer LANDesk SOFTWARE INC mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20170526 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.87.174.0/24 descr: Comcast Cable Communications, Inc. 1800 Bishops Gate Blvd Mt Laurel, NJ 08054 origin: AS26979 remarks: Proxy add for customer LANDesk SOFTWARE INC mnt-by: MAINT-AS7922 changed: chris_johnson8 [at] cable.comcast.com 20170526 source: RADB last-modified: 2023-11-13T15:54:11Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.48.177.0/24 descr: NextWeb: R3-Laureate/Sylvan origin: AS26979 notify: routing [at] nextweb.net mnt-by: MAINT-AS16467 changed: charlie [at] nextweb.net 20040924 #19:51:58(UTC) changed: charlie [at] nextweb.net 20060505 #23:44:20(UTC) source: RADB last-modified: 2023-11-13T15:39:37Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source