Comparison

CheckThatPhone vs Twilio Lookup: US and Canadian carrier lookups at $30 per 10,000, not $80

CheckThatPhone is a Twilio Lookup alternative for teams that only need US and Canadian numbers. 10,000 carrier and line-type lookups a month cost $30 on our 10K plan; at Twilio's $0.008 list price for Line Type Intelligence, the same 10,000 cost $80 (10,000 × $0.008). Twilio Lookup charges per data package, while one CheckThatPhone credit, $0.005 down to $0.0009, returns carrier, line type, porting, deliverability and location together. One lookup also includes the ported flag and routing number, recent disconnections, a send-or-not verdict for texts, state and city, the time zone and location from your visitor's IP in the same call, which a Line Type Intelligence request doesn't (what each includes).

Twilio is the stronger choice for numbers outside North America, for checks we don't offer (reassigned numbers, SIM swap, caller name, identity match), and for pay-as-you-go use with no monthly plan. CheckThatPhone adds TCPA litigator, state DNC and landline-SMS checks, which Twilio's Lookup pricing page doesn't list.

As of October 3, 2026, read from Twilio's own pricing page and documentation. Each Twilio fact links to the page it came from. A few were read later, on October 10, 2026, and are dated where they appear. Twilio's pricing page says its prices are current as of August 2026. Prices change, so check the source before you commit budget. CheckThatPhone is our product. How we compare vendors.

At a glance

Cost of carrier and line type at volume

Like for like: carrier and line type for US numbers each month, monthly billing. Twilio column is Line Type Intelligence at its $0.008 list price per request (Twilio pricing; enterprise accounts can negotiate committed-use discounts with Twilio Sales); CheckThatPhone column is our cheapest plan for that volume, including any overage.

Two caveats. Twilio's formatting check is free at any volume, so for format validation alone Twilio costs less. And Twilio's Line Status package ($0.007 per request for the first 100,000) is a separate reachability signal; our base lookup includes action, deliverable and deactivationDate, which are not the same check, so compare them on your own numbers.

What one request includes

A lower price per request only compares like with like when the requests return the same data. One CheckThatPhone lookup also includes the ported flag and routing number, recent disconnections, a send-or-not verdict for texts, state and city, the time zone and location from your visitor's IP in the same call, which a request to Twilio Lookup (Line Type Intelligence) doesn't.

✓ included ◐ included with a limit + a separately priced package or API – not in the documented request or response

Operational terms

Commitments, limits and support, from each side's own published pages. Where a page doesn't state a term, the table says so.

Not published means it isn't stated on the Twilio pages listed under Sources when we read them. It doesn't mean Twilio doesn't offer it. Our column follows the same rule, using only our own pricing, docs, terms and contact pages.

Which one to choose

Example request and response

A CheckThatPhone lookup with the TCPA litigator scrub switched on:

curl --request POST \
  --url 'https://api.checkthatphone.com/v1/lookup' \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{"phone": "+1 312 555 0142", "litigatorFilter": true}'

An illustrative response (a fictional 555 number; field names and formats match the live API):

{
  "success": true,
  "credits_used": 2,
  "data": {
    "subscriber": "3125550142",
    "optDate": "2026-10-03T15:20:05.114Z",
    "action": "send",
    "deliverable": "true",
    "reason": "",
    "nanpType": "mobile",
    "blackList": "false",
    "dip": "success",
    "dipLrn": "3125550199",
    "dipPorted": "true",
    "dipOcn": "6010",
    "dipCarrier": "AT&T",
    "dipCarrierSubType": "WIRELESS",
    "dipCarrierType": "mobile",
    "litigator": "false",
    "geoState": "IL",
    "geoCity": "chicago",
    "geoCountry": "US",
    "geoSource": "area-code",
    "timezone": "America/Chicago",
    "tzOffset": 6,
    "error": "false"
  }
}

The carrier name Twilio returns as carrier_name under line_type_intelligence is dipCarrier here, and its line type maps to nanpType, dipCarrierType and dipCarrierSubType. Every field is documented in the API reference.

Sources

Twilio pages, with the date we read each one:

• Twilio Lookup API pricing (read October 3, 2026 and October 10, 2026)
• Twilio Lookup v2 API documentation (read October 3, 2026 and October 10, 2026)
• Twilio Line Type Intelligence documentation (read October 3, 2026 and October 10, 2026)
• Twilio changelog: Lookup Bulk private beta (October 1, 2025) (read October 3, 2026)
• Twilio support plans (read October 10, 2026)
• Twilio service level agreements (read October 10, 2026)

CheckThatPhone figures come from our pricing page, API documentation and terms of service.

Related

• All comparisons and the cost at different volumes: CheckThatPhone compared
• Other options: vs Abstract API, vs Numverify, vs Vonage Number Insight and vs Trestle
• Eight vendors side by side: Phone validation API pricing in 2026