These entries are queried from radb.net using whois, you can try my project getting these.
:AS13816 route: 199.255.248.0/22 descr: Vigilant Technologies origin: AS13816 mnt-by: PHOENIXNAP-MNT changed: milanc [at] phoenixnap.com 20201229 source: LEVEL3 rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.255.248.0/24 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.255.250.0/23 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.255.250.0/24 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 199.255.251.0/24 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.66.152.0/23 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 208.66.154.0/23 origin: AS13816 descr: Proxy route remarks: Proxy route mnt-by: MAINT-AS7545 changed: core-neteng-support [at] tpg.com.au 20221213 source: RADB last-modified: 2023-11-13T16:13:13Z rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source