Question 1

Is the phone number lookup free?

Accepted Answer

Yes — the country, format and line-type guess run entirely in your browser at no cost and with no signup. Live carrier name, owner name and spam score require the paid Lookup API or a Rozper account.

Question 2

What exactly does the free lookup tell me?

Accepted Answer

It identifies the country and region from the dialing code, checks whether the digit count looks plausible, and gives a best-effort guess at whether the number is a mobile, landline or toll-free line based on known numbering-plan patterns.

Question 3

Can it tell me who owns the number?

Accepted Answer

Not for free. Caller name and identity data come from carrier and directory partnerships and are only available through the Lookup API or a Rozper account, where usage can be tracked and rate-limited responsibly.

Question 4

How accurate is the line-type guess?

Accepted Answer

It's a heuristic based on publicly known numbering-plan rules (like US toll-free prefixes or UK mobile ranges), not a live network query. Portability and carrier-specific allocations mean it can be wrong — treat it as a guide, not a fact.

Question 5

Does the lookup work for numbers outside the US?

Accepted Answer

Yes — it checks the number against 237 real country dialing codes and applies country-specific line-type rules where we have them, falling back to a general format guide otherwise.

Question 6

How is this different from the Carrier Lookup tool?

Accepted Answer

They overlap. This tool leans toward identifying who and what a number is (owner, line type, region) for lead and support workflows, while Carrier Lookup focuses on live network routing data like ported status. Both free tiers do the same client-side country and format check.

Free Phone Number Lookup

Free identification, or live identity data.

Numbering-plan rules, then live data.

Verifying thousands of leads?

Questions, answered.

Unlock live phone number lookups.