These entries are queried from radb.net using whois, you can try my project getting these.
:AS3908 route: 49.143.232.0/22 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.146.222.0/23 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.150.128.0/20 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.232.5.0/24 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 63.232.186.0/24 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.120.16.0/21 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.127.192.0/22 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 65.154.160.0/22 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 67.131.88.0/22 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 103.7.160.0/22 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 204.134.160.0/20 descr: CenturyLink Communications 100 CenturyLink Dr Monroe, LA 71203 origin: AS3908 member-of: rs-CTL-APAC-AS3908 mnt-by: MAINT-CENTURYLINK changed: ipadmin [at] centurylink.com 20181030 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source