Can I revoke token approvals when the original dApp no longer exists?

Usually, because approvals are on-chain and can be revoked through a compatible wallet and tool.

The answer

Usually, because approvals are on-chain and can be revoked through a compatible wallet and tool.

What to do next

Use a reputable checker for the exact network and verify contract details.

USEFUL TOOL OR DOCUMENTATION

Revoke.cash wallet permission scanner

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RELATED PRODUCT OR SERVICE

Trezor hardware wallet

Related self-custody hardware; verify supported coins, networks and recovery standards. It cannot reverse an already compromised seed or fraudulent transfer.

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