Phone number lookup / validation
Phone number lookup / validation: returns carrier line type (mobile, landline, VoIP, toll-free) and E.164 format. Detect VoIP/burner numbers in sign-up fraud checks; confirm SMS-capable mobiles. $0.02.
Not tested: has real-world effectsour last check, 2026-10-18
0 of 0checks answered this week
n/amedian answer time
$0.02listed price per call
n/aprice it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://verify-x402.okwithit9.workers.dev/verify/phone
| Category | Everything else |
|---|---|
| Provider host | verify-x402.okwithit9.workers.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 3 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
We never call tools that send, buy, move money or file anything, not even without paying.
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"country": {
"description": "ISO 3166-1 alpha-2; needed only when phone isn't E.164",
"example": "US",
"required": false,
"type": "string"
},
"phone": {
"description": "Phone number to look up. E.164, or a national number when country is set.",
"example": "+14155552671",
"required": true,
"type": "string"
}
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"country": {
"additionalProperties": false,
"description": "ISO 3166-1 alpha-2; needed only when phone isn't E.164",
"properties": {
"description": {
"type": "string"
},
"example": {
"type": "string"
},
"required": {
"const": false
},
"type": {
"const": "string"
}
},
"required": [
"type",
"description",
"required",
"example"
],
"type": "object"
},
"phone": {
"additionalProperties": false,
"description": "Phone number to look up. E.164, or a national number when country is set.",
"properties": {
"description": {
"type": "string"
},
"example": {
"type": "string"
},
"required": {
"const": true
},
"type": {
"const": "string"
}
},
"required": [
"type",
"description",
"required",
"example"
],
"type": "object"
}
},
"required": [
"phone"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"country_code": {
"type": "string"
},
"line_type": {
"description": "Carrier line type: mobile, landline, VoIP, or toll-free.",
"properties": {
"carrier_name": {
"type": "string"
},
"error_code": {},
"mobile_country_code": {
"type": "string"
},
"mobile_network_code": {
"type": "string"
},
"type": {
"type": "string"
}
},
"type": "object"
},
"phone_number": {
"type": "string"
},
"valid": {
"type": "boolean"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}