These entries are queried from radb.net using whois, you can try my project getting these.
:AS26751 route: 12.192.164.0/24 descr: EMBARQ DedIP origin: AS26751 mnt-by: EMBARQ-MNT changed: tom.mueller [at] embarq.com 20080919 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 12.192.172.0/23 descr: EMBARQ DedIP origin: AS26751 mnt-by: EMBARQ-MNT changed: tom.mueller [at] embarq.com 20080919 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.174.97.0/24 descr: EMBARQ DedIP origin: AS26751 mnt-by: EMBARQ-MNT changed: tom.mueller [at] embarq.com 20081022 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.2.173.0/24 descr: EMBARQ DedIP origin: AS26751 mnt-by: EMBARQ-MNT changed: tom.mueller [at] embarq.com 20080919 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source