Comparison

CheckThatPhone vs Trestle: US and Canadian validation at $30 per 10,000, not $150

CheckThatPhone is a Trestle alternative for US and Canadian numbers. 10,000 validations a month cost $150 at Trestle's $0.015 a query (10,000 × $0.015) and $30 on our 10K plan. With a litigator check on every number it's $200 at Trestle (+$0.005 a query) against $60 for 20,000 credits with us. Trestle's price includes a phone activity score and a prepaid flag we don't return, and it covers 200+ countries. One CheckThatPhone lookup also includes the ported flag and routing number, 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 Trestle Phone Validation request doesn't (what each includes).

Trestle also publishes a 99.95% uptime SLA and its rate limits, and sells identity data such as owner names. CheckThatPhone adds porting data, deliverability, landline-SMS lookups and free state DNC and complainer checks, which Trestle says it doesn't offer. Self-serve Trestle accounts pay from a wallet limited to $750 a month, and Trestle suggests Enterprise pricing above 18K queries a month.

As of October 9, 2026, read from Trestle's own pricing, product, documentation and knowledge-base pages. Each Trestle fact links to the page it came from. A few were read later, on October 10, 2026, and are dated where they appear. Prices change, so check the source before you commit budget. CheckThatPhone is our product. How we compare vendors.

At a glance

Field mapping: Trestle to CheckThatPhone

Trestle's documented Phone Validation response fields and where each one lands in a CheckThatPhone response. Every field is described in our API reference.

Cost at different volumes

Lookups each month at list prices, monthly billing. Trestle columns use its pay-as-you-go prices: $0.015 a query, +$0.005 with the Litigator Check. Its self-serve wallet is limited to $750 a month (wallet FAQ), so figures above that are marked Enterprise and show the list-price arithmetic, not a quote; Trestle offers custom pricing for "Usage above 18K queries per month". CheckThatPhone columns are our cheapest plan for the volume, including overage; the litigator scrub uses 2 credits a number.

The two are not identical lookups. Trestle's $0.015 includes its activity score and prepaid flag; ours includes the ported flag, routing number, deliverability fields, location and time zone. 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, 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 Trestle (Phone Validation) doesn't.

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

Litigator check vs litigator scrub

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 Trestle pages listed under Sources when we read them. It doesn't mean Trestle 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": "206-555-0164", "litigatorFilter": true}'

An illustrative response (a fictional 555 number; field names and formats match the live API). The fields with no counterpart in Trestle's documented response are the carrier dip fields (dipLrn, dipPorted, dipOcn), action, deliverable, geoState, geoCity and timezone:

{
  "success": true,
  "credits_used": 2,
  "data": {
    "subscriber": "2065550164",
    "optDate": "2026-10-09T17:45:03.902Z",
    "action": "send",
    "deliverable": "true",
    "reason": "",
    "nanpType": "mobile",
    "blackList": "false",
    "dip": "success",
    "dipLrn": "2065550164",
    "dipPorted": "false",
    "dipOcn": "6010",
    "dipCarrier": "AT&T",
    "dipCarrierSubType": "WIRELESS",
    "dipCarrierType": "mobile",
    "litigator": "false",
    "geoState": "WA",
    "geoCity": "seattle",
    "geoCountry": "US",
    "geoSource": "area-code",
    "timezone": "America/Los_Angeles",
    "tzOffset": 8,
    "error": "false"
  }
}

Sources

Trestle pages, with the date we read each one:

• Trestle pricing (read October 9, 2026)
• Trestle Phone Validation API product page and FAQ (read October 9, 2026)
• Trestle Litigator Check add-on (read October 9, 2026)
• Trestle Phone Validation API documentation (read October 9, 2026 and October 10, 2026)
• Trestle knowledge base: the free API trial (read October 9, 2026)
• Trestle knowledge base: Litigator Checks (read October 9, 2026)
• Trestle knowledge base: Does Trestle offer DNC checks? (read October 9, 2026)
• Trestle knowledge base: What queries are billable? (read October 9, 2026)
• Trestle knowledge base: Developer Portal Wallet FAQ (updated July 27, 2026) (read October 9, 2026)
• Trestle knowledge base: getting started with the Developer Portal Wallet (read October 9, 2026)
• Trestle terms of service (last updated September 30, 2026) (read October 9, 2026)
• Trestle service level agreement (read October 9, 2026)
• Trestle knowledge base: What are Trestle's SLAs? (read October 9, 2026)
• Trestle knowledge base: batch upload FAQ (read October 9, 2026)
• Trestle knowledge base: Which countries' data do you have? (read October 9, 2026)
• Trestle knowledge base: how the Phone Activity Score is calculated (read October 9, 2026 and October 10, 2026)
• Trestle knowledge base: What does the carrier name mean? (read October 9, 2026)
• Trestle Spam Check add-on (read October 9, 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 Twilio Lookup, vs Abstract API, vs Numverify and vs Vonage Number Insight
• Eight vendors side by side: Phone validation API pricing in 2026