There are no universal or “fixed” rules for evaluating domains; different domainers use different filters depending on their experience and the type of domains they focus on.
However, there are essential criteria that most experienced investors check before deciding to buy.
Here are the key filters I personally use:
1. Number of registered TLDs
If the same keyword is registered in multiple extensions, it’s a strong signal of demand and validation.
2. Syllable count
Shorter is better for brandables.
Two syllables are often considered a “sweet spot”.
3. Character count
Again, shorter tends to perform better.
Around 6–8 characters is ideal for many brandable names.
4. Readability & pronunciation
The domain should be easy to read, easy to say, and easy to remember.
If someone needs to spell it, explain it, or repeat it, it loses branding value.
5. Companies already using the keyword
If businesses are already using that exact word or variations of it, the domain usually has stronger resale potential.
6. Trademark safety
Always check if the term is trademarked to avoid future legal issues.
7. Search intent & commercial relevance
Even for brandables, the name should “sound” like it fits a real product, startup, or service category.
These filters don’t guarantee a sale, but they help you avoid weak names and focus on domains with real market potential.