These entries are queried from radb.net using whois, you can try my project getting these.
:AS18639 route: 198.105.0.0/22 origin: AS18639 descr: Abt Associates, Inc. mnt-by: MAINT-AS17378 changed: jcarpenter [at] hostedsolutions.com 20221013 #01:24:38Z source: RADB last-modified: 2023-11-13T16:17:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.105.2.0/24 descr: Abt Associates, Inc origin: AS18639 mnt-by: MAINT-AS17378 changed: romeo.czumbil [at] tierpoint.com 20180826 #05:10:49Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.105.3.0/24 descr: Abt Associates, Inc origin: AS18639 mnt-by: MAINT-AS17378 changed: romeo.czumbil [at] tierpoint.com 20180826 #05:11:05Z source: RADB last-modified: 2023-11-13T16:17:09Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2602:277::/36 origin: AS18639 descr: Abt Associates, Inc mnt-by: MAINT-AS17378 changed: jcarpenter [at] hostedsolutions.com 20221013 #01:35:07Z source: RADB last-modified: 2023-11-13T16:17:10Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2604:1a00:17::/48 descr: ABT Associates origin: AS18639 mnt-by: MAINT-AS27506 changed: Daniel.McCoon [at] crowncastle.com 20220725 source: RADB last-modified: 2023-11-13T16:11:48Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source