Names & extensions
The SuperFile register holds two kinds of entry that are really one string: the @name people know you by, and the .extension your protected files carry. @acme and .acme are the same registry string, so when one is available the other is too, and one check answers for both.
#Classes
Every reservation is filed under a class. The class decides who may claim the name and how the claim is examined.
| Class | For | @name | Examination |
|---|---|---|---|
| Individual | A person | Free, one per person | Mailbox confirmation |
| Brand | A company, product or organisation | Paid | Examined by hand against the trademark and business records you supply |
| Institution | A public body | Paid; the reservation must come from a .gov or .mil mailbox | Examined by hand |
Full definitions and the current lanes are on the registration classes page, and the examination policy is in the Terms & Conditions.
#The free @name
Every person gets one free Individual @name, for good. The slot is spent by claiming a name, not by keeping it: if you later transfer that name to someone else, you do not get a second free one. Paid classes are unaffected — another Brand name is simply another order.
#Extensions
An extension is a paid add-on to a name you hold. It costs $100, you can add up to ten per order, and there is no limit on how many you own across orders. It is charged at checkout when you reserve, through Stripe; the order and its receipt appear in your dashboard, and the refund policy covers cancellations.
When you type an available @name on the reservation page, the page offers the matching extension as a clearly optional add-on. You can also add any other available extension to the basket, and later reserve more from the dashboard — the checkout recognises names you already own and charges for the extensions only.
What an extension does: every file you protect can carry it. quarterly-report.pdfs becomes quarterly-report.acme, and the file announces whose it is wherever it goes.
#Holds, waves and registration numbers
- Reserving places a hold on the name immediately — free, in the order received.
- The register opens in waves. A hold keeps its place in line; when its wave opens and the claim is granted, the name is registered with a permanent registration number that anyone can look up on the public register.
- The How holds work page walks through the timeline; Verification & examination explains what confirms a hold and what releases one.
#Availability and the public register
The public register shows every registered name and where each hold stands. Availability checks are rate-limited and answer for the exact string you typed; case does not matter, and the register stores names in lower case.
#Marketplace
Names and extensions can be transferred freely between people (Transfers). A paid marketplace with auctions and offers exists in the product and is switched on by the register from time to time; when it is off, the auctions page is not reachable.
Updated September 2026