Does the country publish full voter registers at the polling station level online?

Electoral Code of the Republic of Belarus [Amended as of June 4, 2015]

Article 21

Familiarisation with the Lists of Citizens Who Have the Right to Take Part in Elections, Referendum or Voting for Recall of a Deputy. Right of Appeal against Irregularities in the List

Lists of citizens who have the right to take part in elections, referendum or voting for recall of a deputy shall be provided for familiarisation by voters, referendum participants fifteen days before the elections, referendum or voting for recall of a deputy whereas at polling stations formed in sanatoria, preventoria, rest homes, hospitals and other stationary medical treatment and prevention institutions – two days before the elections, referendum or voting for recall of a deputy.