These entries are queried from radb.net using whois, you can try my project getting these.
:AS31109 route: 23.35.18.0/24 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200130 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 23.45.176.0/24 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200130 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 23.48.7.0/24 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200216 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2600:140b:1400::/48 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200130 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2600:140b:3c00::/48 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200116 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2600:140b:4c00::/48 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200217 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2600:140b:5c00::/48 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200217 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route6: 2600:140b:6400::/48 descr: Akamai Technologies origin: AS31109 mnt-by: AKAM1-ALTDB-MNT changed: ip-admin [at] akamai.com 20200304 source: ALTDB rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source