# V3 Pool Addresses

## V3 Pool Addresses

## poolByPair

The most obvious way to get the address for a pool is to call poolByPair on the factory. If the pool exists, this function will return its address, else `address(0)` (`0x0000000000000000000000000000000000000000`).

* The "canonical" way to determine whether or not a pool exists.
* Requires an on-chain lookup.


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