How to Buy Mainframe (SN25)
Every exchange we track that lists SN25, what the buy costs, and what it costs to take SN25 with you afterwards.
None of the exchanges we track currently accepts SN25 deposits or withdrawals, so we have no venue to point you at. That usually means the token trades only on a decentralised exchange, or that it has been delisted.
Where to buy SN25
No exchange we track currently lists SN25.
Buying SN25 step by step
- Pick a venue from the table. For a coin this size the choice is usually short — 0 exchanges list SN25 at all, and the table already shows what you will pay to leave as well as to buy.
- Fund the account. None of them takes fiat for SN25, so buy USDT with a card or bank transfer elsewhere and withdraw it in. Depositing a stablecoin you already hold is free on almost every exchange here.
- Place the order. A market order pays the taker fee in the table; a limit order that rests on the book pays the lower maker fee. On a thinly traded coin the spread costs more than either, so a limit order is worth the wait.
- Decide whether to move it. Leaving SN25 on the exchange is free but custodial. Moving it to a wallet that supports it costs one withdrawal fee — send a small test amount first, and match the network on both sides.
How to buy SN25 — FAQ
Where can I buy Mainframe (SN25)?
Not on any exchange we track. None of them accepts SN25 deposits or withdrawals today, which usually means it trades only on a decentralised exchange or has been delisted. Treat any site claiming otherwise with suspicion.
What is the cheapest way to buy SN25?
We cannot rank the exchanges on cost for SN25 yet: the venues that list it have not published enough of their fee schedule for a like-for-like comparison. The withdrawal fees in the table are still exact.
Can I buy SN25 with a credit card?
None of the exchanges listing SN25 takes a card for it directly. The usual route is to buy USDT with a card on an exchange that does, withdraw it, and trade it for SN25 on one of the venues above. Budget for the card charge, the USDT withdrawal fee and the trade.
Do I have to pay a fee to withdraw SN25?
Every exchange charges one, as a flat amount of SN25 per network rather than a percentage. We do not have a priced figure for all of the venues listing SN25 yet — the SN25 withdrawal fee page has whatever each exchange publishes.
Is it safe to leave SN25 on the exchange?
It is a custody choice, not a safety switch. While the coin sits there the exchange holds the keys: convenient, recoverable if you lose your password, and dependent on the exchange staying solvent and keeping withdrawals open. Moving it to a wallet you control removes that dependency and costs one withdrawal fee. For a trading balance, staying put is reasonable; for a long hold, most people move.
Exchange coverage for SN25 comes from each exchange’s own deposit and withdrawal endpoints (last sync —); trading fees are the published base tier, no volume discount applied. Exchanges we have a referral arrangement with appear first and are tagged as such — it changes no number in any row. Nothing here is investment advice; see our methodology.