These entries are queried from radb.net using whois, you can try my project getting these.
:AS396997 route: 23.155.96.0/24 descr: Blockstream-23-155-96-0/24 origin: AS396997 mnt-by: MNT-BUC-16 changed: owen [at] delong.com 20190201 source: ARIN rpki-ov-state: valid route6: 2620:54:2000::/48 descr: Blockstream-2620-54-2000/48 origin: AS396997 mnt-by: MNT-BUC-16 changed: owen [at] delong.com 20190201 source: ARIN rpki-ov-state: valid