These entries are queried from radb.net using whois, you can try my project getting these.
:AS36673 route: 71.155.218.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:05:27Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.17.11.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:07:45Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.51.125.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:07:20Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.51.126.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:06:49Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.51.127.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:06:26Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 198.51.128.0/24 origin: AS36673 descr: Vectren Utility Holdings, Inc. notify: kristopher.martin [at] centerpointenergy.com mnt-by: MAINT-AS36673 changed: kristopher.martin [at] centerpointenergy.com 20230329 #15:05:57Z source: RADB last-modified: 2023-11-13T16:15:38Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source