but you know website who have private key with balance or hackers who have ?
you mean directory.io clone like this: Directory.io - Now with balances! (doesn't seem to work anymore)
Bitcoinlist.io | Find Bitcoin Addresses with Coins | Hack the Network (CAUTION, read below)
https://lbc.cryptoguru.org/dio/1 by Large Bitcoin Collider Thread 2.0
read those threads and fully understand what they are before playing with those pages
WARNING:
DO NOT search your private keys on the site
DO NOT use any private keys and addresses generated by the site