There are many Tezos block explorers, many of which have already upgraded to support FA Tezos tokens. We'll continue to add to this list as more Tezos block explorers upgrade.
tzStats.com is one of the best and one of the first Tezos block explorers
TzKT is a powerful block explorer from the world famous Baking Bad team
tezblock is one of the most popular explorers, developed by the AirGap team
Cryptonomic's excellent flagship Tezos block explorer, in addition to its lighter, Mininax explorer
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