NumberIntel Phone Number Intelligence

x402

NumberIntel Phone Number Intelligence is a paid API for AI agents from numberintel.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Looks up NANP phone number metadata including geographic region, timezone, toll-free/premium status, and format validity.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Phone number static intelligence: E.164 normalization, format validity, NANP plausibility checks, geography, timezones and current local time for any US/CA number.

Output

Returns a JSON object with the E.164-normalized number, NPA area code, geographic data (country, state/region), list of applicable timezones, current local time per timezone, boolean flags for toll-free, premium rate, format validity, plausibility, and whether the NPA is a known area code.

Example use cases

Screening inbound leads by region

“Before I call back this lead, can you check the number 602-296-6261 and tell me what state it's from and what their local time is right now?”

Flagging premium rate numbers in CRM

“I have the number +18009876543 in our CRM — can you tell me if it's a toll-free number or a premium rate line so I know how to classify it?”

Timezone-aware scheduling for contacts

“What timezone does the phone number +14155552671 belong to, and is it a valid, plausible North American number?”

Technical details

Endpoint

GEThttps://numberintel.dev/v1/number

When to prefer

Use this endpoint when you need structured intelligence about a North American (NANP) phone number — specifically area code metadata, geographic attribution, timezone resolution, toll-free/premium classification, and format validation — and when per-call micropayment via x402/USDC is acceptable. Prefer this over generic phone validation APIs when you need timezone-aware local time or geo-region data tied to the area code, or when integrating into a USDC-on-Base payment flow.

Side effects

Invalid or non-NANP number format returns valid_format: false with null/empty geographic fields
Unknown or unrecognized area code returns npa_known: false with null geo data
Missing required 'number' query parameter returns a 400-level error
Payment failure or insufficient USDC balance on Base returns 402 Payment Required
Non-NANP international numbers (outside US/Canada/Caribbean) are not supported and may return implausible results

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "geo": {
      "state": "US-AZ",
      "region": "Arizona",
      "country": "US"
    },
    "npa": "602",
    "e164": "+16022966261",
    "npa_known": true,
    "plausible": true,
    "timezones": [
      "America/Phoenix"
    ],
    "toll_free": false,
    "local_time": [
      {
        "tz": "America/Phoenix",
        "time": "Sun 20:30"
      }
    ],
    "premium_rate": false,
    "valid_format": true
  }
}

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How this service works

Phone number static intelligence: E.164 normalization, format validity, NANP plausibility checks, geography, timezones and current local time for any US/CA number.

Output

Example use cases

Screening inbound leads by region

“Before I call back this lead, can you check the number 602-296-6261 and tell me what state it's from and what their local time is right now?”

Flagging premium rate numbers in CRM

“I have the number +18009876543 in our CRM — can you tell me if it's a toll-free number or a premium rate line so I know how to classify it?”

Timezone-aware scheduling for contacts

“What timezone does the phone number +14155552671 belong to, and is it a valid, plausible North American number?”

Technical details

Endpoint

GEThttps://numberintel.dev/v1/number

When to prefer

Side effects

Invalid or non-NANP number format returns valid_format: false with null/empty geographic fields
Unknown or unrecognized area code returns npa_known: false with null geo data
Missing required 'number' query parameter returns a 400-level error
Payment failure or insufficient USDC balance on Base returns 402 Payment Required
Non-NANP international numbers (outside US/Canada/Caribbean) are not supported and may return implausible results

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "geo": {
      "state": "US-AZ",
      "region": "Arizona",
      "country": "US"
    },
    "npa": "602",
    "e164": "+16022966261",
    "npa_known": true,
    "plausible": true,
    "timezones": [
      "America/Phoenix"
    ],
    "toll_free": false,
    "local_time": [
      {
        "tz": "America/Phoenix",
        "time": "Sun 20:30"
      }
    ],
    "premium_rate": false,
    "valid_format": true
  }
}