Unlimited approval checker
Filter a TRON address for unlimited TRC20 approvals: max uint256 remaining, named DEX routers versus unknown spenders.
Unlimited means the cap is the uint256 ceiling
Most TRC20 tokens treat 2^256−1 as “approve everything I will ever hold.” Wallets label that unlimited. This check is the homepage table with the Unlimited filter in mind: those rows first.
Unlimited is not a transfer. It is a standing permission. transferFrom can still empty the token later without a second approve signature.
Named DEX routers versus unknown contracts
SunSwap and JustLend routinely show unlimited because their UI asks for it once. That is a known tradeoff. An unlabeled contract with unlimited USDT is the classic drain setup.
Do not revoke a named router in panic solely because the flag is unlimited. Do revoke unknown spenders you cannot map to a venue you still use.
USDT unlimited is the row that hurts
Official USDT TRC20 is TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t. An unlimited allowance on that contract to a stranger is how wallets go to zero while you sleep.
TUSD on the sample address TRX6Q82wMqWNbCCiLqejbZe43wk1h1zJHm toward SunSwap is unlimited-to-a-named-router, which is a different story than unlimited-to-a-random-hex.
This page still does not send a revoke
Filtering unlimited rows is research. Zeroing them is a signed approve(0) in TronLink or the wallet you actually control. Fake revoke sites that want a seed are the problem-fake-revoke page.
Deep scan remains optional, read-only, ~2–3 TRX, class tron-cnnctAprBtn. Never a seed.
Independent desk, different from energy
Unlimited here is an allowance flag, not an EnergyLimit. We will not talk leftover energy except to say this is not that calculator.
Not TRON Foundation, Tether, SunSwap, or TronLink. Help: @wholetron.
FAQ
Is unlimited always malicious?
No. Named DEX routers often request it. Unknown spenders with unlimited USDT are the danger.
Can the spender take more than my balance?
No. transferFrom cannot exceed the smaller of balance and allowance. Unlimited still means the whole balance.
Does unlimited expire?
Not by time. It lasts until you set a new allowance, typically zero.
Will this checker set my allowance to zero?
No. Lists only.
Sample for unlimited-to-named-router?
TRX6Q82wMqWNbCCiLqejbZe43wk1h1zJHm — unlimited TUSD to SunSwap.
Who can I ask?
@wholetron with public contracts only.