How to check if a USDT address is frozen
Short answer. An address is "frozen" when Tether adds it to the blacklist of the USDT contract on TRON. You can check this on-chain: the contract exposes the status and emits an event when an address is added or removed. A checker reads the same data for you.
What does "frozen" mean for a USDT address?
Tether's terms allow it to freeze tokens and to blacklist an address that holds them (Tether Legal). On TRON the blacklist lives in the USDT contract TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t, so the status is public and anyone can read it.
How do I check it?
- Copy the full address (it starts with
Tand has 34 characters). - Paste it into the checker. It reads the contract's blacklist status through our own TRON node.
Why can a clean-looking address be frozen later?
The blacklist changes over time. A check shows the state at the moment of the request only, so repeat it before you rely on the result. BlockSec counted 4,163 unique addresses frozen on Ethereum and Tron in 2025 and 150 removed from the blacklist within the year (BlockSec).
Key facts
| Fact | Value | Source |
|---|---|---|
| USDT contract on TRON | TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t | Tether supported protocols |
| Who can freeze | Tether, under its terms | Tether Legal |
| Addresses frozen in 2025 (Ethereum + Tron) | 4,163 | BlockSec |
| Removed from the blacklist in 2025 | 150 addresses | BlockSec |
Check an address now
Paste a TRON address into the USDT TRC20 checker to see Tether blacklist status and OFAC matches. To get alerts on incoming transfers, start in the Telegram bot.
Frequently asked questions
Can I see a frozen address without a tool?
Yes. The status and the add/remove events are public on the USDT contract.
Does a check prove the address is safe?
No. It shows the Tether blacklist status and OFAC matches at that moment. It is not AML scoring.
Is my address stored when I check it?
No. See the methodology for how the check is processed.
How often does the status change?
Without a schedule: Tether adds and removes addresses at its discretion, so check again before each large transfer.
Sources: Tether Legal · Read as Markdown
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