ASA can import and export data like that. I don't think the system ever had more than 100 system-wide entries though.
If you mean personal lists, then yes, ASA can export each station's personal list with each station on a line
Something like this would mean that extension 1234's list 1 is his personal list with the name 'mylist' and it's 5 entries, which are 11111,22222,33333,44444,55555.
"Ext","List No","List Name","Size","01","02","03","04","05"
"1234","1","mylist","5","11111","22222","33333","44444",55555"
You'd probably have to rig a bulk change to make those 1000 phone's 'list 1' be 'personal' to be allowed to import and export anything from their 'personal' list though.