These entries are queried from radb.net using whois, you can try my project getting these.
:AS-OPAL as-set: AS-OPAL descr: ASNs announced by TalkTalk Communications Limited AS13285 remarks: AS-OPAL is a Legacy AS SET. Please use AS-TALKTALK members: AS9105 members: AS12708 members: AS13285 members: AS60257 members: AS-OBSL members: AS-Virtual1 tech-c: DUMY-RIPE admin-c: DUMY-RIPE mnt-by: TALKTALK-MNT created: 2002-09-02T10:00:07Z last-modified: 2023-04-26T11:37:09Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: ****************************