These entries are queried from radb.net using whois, you can try my project getting these.
:AS16938 route: 74.123.144.0/22 descr: Proxy-registered route object origin: AS16938 remarks: This route object is for a TVC customer route. mnt-by: MAINT-TVC changed: ip-admin [at] tvc-ip.net 20100419 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.123.144.0/23 descr: Proxy-registered route object origin: AS16938 remarks: This route object is for a TVC customer route. mnt-by: MAINT-TVC changed: ip-admin [at] tvc-ip.net 20100419 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 74.123.146.0/23 descr: Proxy-registered route object origin: AS16938 remarks: This route object is for a TVC customer route. mnt-by: MAINT-TVC changed: ip-admin [at] tvc-ip.net 20100419 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source