Phone number check

Operator, line type, country and time zone of a number — and, kept clearly apart, the source's reputation judgements.

1 slot

1 slot per query, 3 with the InfoCert qualified timestamp. You pay only when a result is obtained: if the source does not answer, nothing is charged and no bundle is produced.

Available to anyone with at least one paid order.

The result is sealed in a bundle with an Ed25519 signature and an RFC 3161 timestamp, with a report in text and PDF.

From a number you can derive which operator it belongs to, whether it is a landline or mobile, in which country and time zone it sits. These are facts.

🔴 The same response also contains judgements — risk indices, flags as nuisance or as involved in abuse — and possibly a name. The report separates these sharply from the facts, because a judgement presented as a finding, about a person, becomes an accusation signed by us.

What goes into the bundle

What it establishes

Only what the program actually does: every item matches a finding that exists in the code.

Operator and line type

The operator the number is assigned to and whether it is a landline, mobile or service number.

Country and time zone

The international prefix, country and time zone: useful when the time of a call is at issue.

Reputation indicators — declared as judgements

The source's indices and flags, reported in a separate section and attributed to whoever expresses them. They do not become assertions of the bundle.

Honesty first

What this check does NOT tell you

A stated limit is worth more than a claim of completeness — and it goes into the report too, not just onto this page.

🔴 Risk indicators are a third party's opinions, not findings. “Flagged as nuisance” means someone flagged it, not that it is. In the report they sit in a separate section, stating who expresses them.

The name that sometimes appears is personal data, obtained by asking the question. The same warning as for payee verification applies: use it where it serves the purpose, not out of curiosity.

It does not say who called or from where. A number's assignment to an operator says nothing about who was using it at a given moment, and portability makes the operator a weak clue about origin.

FAQ

Frequently asked questions

The questions we are asked most often about this check.

Can I find out who a number is registered to?

Sometimes the source returns a name, sometimes not, and when it does it is a third party's personal data. The bundle reports it for what it is — a value declared by a commercial source, not a civil-registry finding — and it must not be used as if it certified the registration.

Does it help prove phone harassment?

It helps fix the facts around the number: who it is assigned to, what kind of line it is, which time zone. Reputation flags may corroborate an account, but they remain third-party opinions and the bundle says so. Proof of the harassment lies elsewhere — in call records, recordings, messages.

How much does it cost?

1 slot, 3 with the InfoCert qualified timestamp.