How can Pumpfun use 'pump' as the suffix in their contract address?

[WSbaikaishui]

I would like to know how they achieved that. Did they use brute force to generate the key pairs?

like 6M8LqJNAah3fDG5TwH6opCbeDVKa51nXLG5VkZAHpump

[rckprtr]

They pre-grind them using this: https://www.quicknode.com/guides/solana-development/getting-started/how-to-create-a-custom-vanity-wallet-address-using-solana-cli

and then on create token the frontend queries the next available one and assigns it to the mint.

[WSbaikaishui]

thanks, it's helpful for me