●   Available for acquisition/waɪ/   Pronounced “why”

A company in one letter.

An outcome in mathematics. A question in English.
A choice in its shape.

Inquire about Y.inc ↗A single-letter .inc domain.
01 / MEANING

Why Y?

A PATH / A DECISION

The shape of a choice.

Greek upsilon (Υ), associated with the Pythagorean tradition, represented a fork in life’s path. The Roman poet Persius refers to its branching form in his third satire. Y carries that same recognizable structure: one path, then a decision.

Its shape can suggest independent thinking, new directions, or two ideas coming together.

Historical reference · Persius, Satire III ↗
y = f(x)INPUT → OUTCOME

From input to outcome.

In a familiar mathematical relationship, x is the input and y is the output. In Cartesian coordinates, y names the vertical axis. For a company, the association is useful: models, measurement, and the results you create.

A natural direction for AI, analytics, science, and engineering.

Yf = f(Yf)COMPUTATION / RECURSION

A foundation of recursion.

The Y combinator is a fixed-point combinator in lambda calculus. It makes recursive definitions possible through function application. That gives Y a real connection to the foundations of programming.

A fitting association for software, developer tools, and systems research.

Mathematical background · Stanford ↗
02 / THE MARKET

Reported single-letter sales.

Documented transactions across several extensions. Each price links to its source.

DomainReported priceYear / source
Z.com
≈ $6.8 millionJPY 800 million
Q.org
$500,000USD · reported closed sale
R.org
$375,000USD · reported closed sale
O.co
$350,000USD · registration rights and related URLs
X.game
$160,000USD · reported sale via Sedo

Single letters. Recognizable buyers.

Two notable acquisitions whose prices were not publicly disclosed.

G.co2011

Google acquired G.co for official links to its products. Its announcement did not disclose a price.

Google announcement ↗

These historical sales illustrate different markets and transaction contexts. Pricing for Y.inc is available on inquiry.

03 / ACQUISITION

Your company. One letter.

Y.inc is available for acquisition through Ultra Domains.
Request pricing or discuss an offer.

Inquire about Y.inc ↗
Ultra Domains ↗