New block chain explorer with rich list and features:
http://www. multifaucet. tk/index.php?blockexplorer=XPD

Listed again on coinmarketcap:
http://coinmarketcap.com/currencies/petrodollar/

Applied for listing at C-CEX / voting:
https://c-cex.com/?id=vote

Applied for listing at YoBit:
https://yobit.net/en/