If you are looking for a different "820k" dataset, it may be one of the following:
: Contains roughly 820,000 galaxy images used for morphological classification in astronomy, described in papers by Walmsley et al. . Download 820k Gmail Domain txt
: A study analyzing DNS TXT records for 1 million domains, which found approximately 765,651 unique TXT records (close to 820k). If you are looking for a different "820k"