Username Rules for Premium & Short Usernames
High-value short handles, single characters, and desirable terms that platforms reserve for monetization or strategic use.
Why These Usernames Are Reserved
Short usernames have real monetary value. Single-character handles like @x or @a have sold for over $1 million. Two-letter combinations fetch tens of thousands. Platforms reserve these at launch to prevent early users from grabbing valuable real estate that could later be monetized through premium sales, partnerships, or verified account programs.
Common Examples
ai
x
z
go
io
dev
app
vip
pro
ceo
cto
nyc
Test This with Your Own Username
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API Enforcement
Check usernames in this category programmatically:
CURL