What is the litigation-risk flag?

It marks numbers associated with a history of claims over unsolicited contact. Teams running dialling campaigns typically suppress them. Treat it as a risk signal rather than a legal determination.

Why is this so much more expensive than the other phone source?

It reaches carrier-level data, which is priced very differently from identity resolution. Run the cheaper Phone enrichment when you only need to know who the person is.

Does it work outside the United States?

No. Phone enrichment covers the rest of the world, without carrier detail.

What does a check cost?

100 points per number, which is $0.10 each, or $100 per 1,000.

Enrichment

US Phone Validation API — Carrier, Line Type & Owner

This is the deep check on a US number. It returns whether the number is valid, the carrier, the line type, whether it is prepaid, an activity score, a litigation-risk flag, and the owner records associated with it, each with its current addresses.

Run it in the app Read the API docs

Example response

{
  "session_id": "6e12…",
  "kind": "phone_enrichment_us",
  "phone": "12069735100",
  "human": "Valid mobile number, active…",
  "machine": {
    "phone_number": "12069735100",
    "is_valid": true,
    "line_type": "mobile",
    "carrier": "…",
    "is_prepaid": false,
    "activity_score": 87,
    "is_litigator_risk": false,
    "country_code": "US",
    "owners": [
      {
        "name": "Jane Doe",
        "type": "person",
        "current_addresses": [
          { "city": "Austin", "state_code": "TX" }
        ]
      }
    ]
  },
  "total_points": 100
}

You send: A US phone number
You get back: Validity, carrier, line type, activity signals and owner records
Coverage: United States only.
Price: 100 pts — $100 per 1,000; 100 points per number — $0.10 each. Only successful lookups are charged.

Comparison

Ways to get this data

Three approaches teams use today, and where each one runs into trouble.

Approach	What it takes	Cost	Trade-off
Calling and finding out	None up front	Regulatory exposure	In the United States the rules differ by line type, so this is the expensive way to learn
A carrier-lookup vendor	A separate contract, usually with a minimum commitment	Enterprise pricing	Another silo, and often no owner data alongside the number data
NeuralVerge	One request, same key as every other source	$0.10 per number	United States only, and it is the most expensive source in the catalog for a reason

Response

What you get back

Every field in the response shown above.

Field	Type	Description
`phone_number`	string	The number that was checked.
`is_valid`	boolean	Whether the number is valid.
`line_type`	string	Mobile, landline or another type — the field that governs how you may contact it.
`carrier`	string	The carrier the number sits with.
`is_prepaid`	boolean	Whether the line is prepaid.
`activity_score`	number	How active the number appears to be.
`is_litigator_risk`	boolean	Whether the number is associated with a history of claims.
`country_code`	string	Country code and calling code for the number.
`owners`	array	Owner records with names, type, age range where known, and current addresses.
`warnings`	array	Any warnings raised during the check.

Integration

How to run it

The same lookup works from the app, the API, or as a tool an agent can call mid-task.

US numbers are accepted with the leading country digit and no plus sign, as in the example. This is the only source in the catalog that returns carrier and line-type detail.

curl -X POST https://api.neuralverge.ai/functions/v1/run-phone-enrichment-us \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "phone": "12069735100" }'

Use cases

What teams use it for

Where this field shows up in an actual workflow.

Screening before a dialling campaign

Separate mobiles from landlines, and drop the numbers flagged for claim history.

Validating a contact list

Remove dead numbers before they burn agent time.

Prioritising by activity

Work the numbers that are actually in use before the ones that are not.

Confirming ownership

Check the number belongs to who your record says it does.

Coverage & limits

Coverage, freshness and limits

What this source covers, how fresh it is, and where it stops.

Coverage

United States only.

Freshness

Checked at request time.

Handling

Contacting US phone numbers is regulated, and the rules differ by line type and by consent. This source gives you the facts to comply; the obligation stays with you. Nothing here is legal advice.

What it will not do

—US numbers only — for the rest of the world use Phone enrichment.
—It is the most expensive source in the catalog at 100 points per number, so screen a list before you run it.
—A clear litigation-risk flag is a signal, not legal advice or a compliance sign-off.

FAQ

Questions, answered

Because United States rules on unsolicited contact differ between mobile and landline numbers. Knowing which you have before you dial is the point of running the check.

Related sources

Phone enrichment

Identity resolution for numbers worldwide.

Email validation

The same idea for email addresses.

All enrichment sources

Email lookup, email finding, validation and phone enrichment.

Try phone enrichment us on your own data

One request format across every source in the catalog.

Get started