How many domain names are registered worldwide?

How to get close to this number

Scale from businesses and projects. Every company, organisation, side project and personal site needs at least one, many hold several defensively, and registration is cheap enough that speculators hold large portfolios. Tens of millions of businesses worldwide plus speculation and defensive holdings produces a total in the hundreds of millions.

The explanation supplies the correction most people need: a large share of registered domains point at nothing. They are parked, held for resale, or registered defensively by a brand that owns the misspellings of its own name. Registration count and website count are very different numbers, and the gap between them is enormous.

The composition is worth noting too. A single top-level domain holds a large minority of the total, decades after the introduction of hundreds of alternatives, which tells you how durable a default can be. These figures come from the operator of that domain, published quarterly, making it one of the better-instrumented statistics about the internet.