Validate and normalise any phone number worldwide
Validate and normalise any phone number worldwide: valid/possible, E.164 and national formats, country, type (mobile, fixed line, toll-free, VoIP...), original carrier, location and time zones. Offline, instant. For CRM, outreach, KYC and calling agents.
Answeringour last check, 2026-10-31
1 of 1checks answered this week
1086 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.facts402.com/phone
| Category | Company and compliance |
|---|---|
| Provider host | api.facts402.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-31 | valid payment request | 402 | $0.01 | 1086 ms |
Example input (from the provider)
{
"body": {
"number": "+44 20 7946 0018"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"default_region": {
"anyOf": [
{
"pattern": "^[A-Za-z]{2}$",
"type": "string"
},
{
"type": "null"
}
],
"default": null,
"description": "ISO country used when the number has no +prefix",
"title": "Default Region"
},
"number": {
"description": "Phone number, ideally in +E.164 form",
"pattern": "^[0-9+()\\-. ]{3,40}$",
"title": "Number",
"type": "string"
}
},
"required": [
"number"
],
"title": "PhoneRequest",
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}