DomainFast

Find an open domain faster

Check one domain directly, or expand one name across the suffixes you actually care about.

Official domaindomainfast.ai

Ready

Start with one domain or a base name.

Base-name mode expands your query across your selected suffixes and keeps the most useful result selected.

Why DomainFast

Put the important answers first.

DomainFast does not make you read through protocol noise before you get the takeaway. Enter one name and see which suffixes are open, which are already taken, and which ones are worth comparing next. It feels more like a decision board for naming and brand selection.

Real registry-backed answersMore compact batch comparisonPrice and register paths close byReady to copy into AI chat

Answer-first

Popular suffixes and the most useful results are surfaced first so you scan less.

Better for naming

Compare many suffixes at once and quickly see which name is worth pushing forward.

Easy to plug in

The same results work well for people, the API, the df CLI, and AI workflows.

API + CLI

Bring live DomainFast checks into your product, agent, or naming workflow.

The same decision-ready answers you see on the site are available through the official API and the df CLI for backends, scripts, and AI workflows.

Official API

Call the official API from sites, agents, or backend services.

Single lookup

curl 'https://domainfast.ai/v1/domains/check?domain=domainfast.ai'

Batch lookup

curl 'https://domainfast.ai/v1/domains/batch-check' \
  -H 'Content-Type: application/json' \
  --data-raw '{"domains":["domainfast.ai","domainfast.com","domainfast.io"]}'

df CLI

Use df in terminal scripts, automations, and AI agents.

Single

df check domainfast.ai

Batch

df check domainfast.ai domainfast.com domainfast.io --compact