Compare
How CheckThatPhone compares with other phone lookup APIs
CheckThatPhone is a phone validation API for US and Canadian numbers: one lookup returns the current carrier from a live carrier dip, porting status, line type, deliverability and location, with optional TCPA litigator, state DNC and landline-SMS checks. These pages compare it with Twilio Lookup, Abstract API and Numverify, using each vendor's own pricing and documentation pages.
As of October 2026. Competitor facts were checked on October 3, 2026 and each one links to its source on the comparison pages. Prices change, so check the source before you commit budget. CheckThatPhone is our product.
CheckThatPhone vs Twilio Lookup
Twilio Lookup bills each data package per request (Line Type Intelligence is $0.008) and covers numbers worldwide, with checks we don't offer such as reassigned numbers and SIM swap. CheckThatPhone returns carrier, line type, porting and deliverability for US and Canadian numbers in one credit, with litigator, state DNC and landline-SMS add-ons.
Read the comparison →CheckThatPhone vs Abstract API
Abstract's phone API covers 190+ countries and returns carrier, line type and line status, with registered-name and risk data on its top plan, from $19 a month for 5,000 requests. CheckThatPhone covers only the US and Canada, returns the same carrier, line-type (VoIP included) and line-status signals, and adds porting status, the routing number, a send-or-not verdict and litigator and DNC checks.
Read the comparison →CheckThatPhone vs Numverify
Numverify validates numbers in 232 countries against international numbering plans, from $14.99 a month for 5,000 requests. CheckThatPhone covers only the US and Canada but runs a live carrier dip on every lookup, so it returns porting status, the routing number and deliverability.
Read the comparison →Side by side
| CheckThatPhone | Twilio Lookup | Abstract API | Numverify | |
|---|---|---|---|---|
| Coverage | US and Canada | Worldwide for line type (Canadian numbers need approval) source | 190+ countries source | 232 countries source |
| Free usage | 500 full lookups a month | Format validation free source | 100 requests a month, no card source | 100 requests a month, non-commercial source |
| Carrier and line type | Included, $0.005 down to $0.0009 per lookup | $0.008 per request source | Included, plans from $19 for 5,000 source | Included, plans from $14.99 for 5,000 source |
| Data source | Live carrier dip | Described as "real-time phone number intelligence" source | Described as "real time", from "several databases of numbers" source | International numbering plans source |
| TCPA litigator, state DNC, landline SMS | Yes (litigator and landline SMS +1 credit, DNC free) | Not listed on its Lookup pricing page source | Not listed on its phone product or pricing pages source | Not listed on its pricing page source |
The detail pages have the full tables, the cost at different volumes, and where each competitor is the better choice.
More vendors
Our phone validation API pricing comparison lines up eight services (Twilio Lookup, Telnyx, Numverify, Abstract API, IPQS, Trestle, phonevalidator.com and numlookupapi.com) on cost per lookup, data depth and compliance features, with the date each price was checked.
What CheckThatPhone covers
- Carrier lookup API: current carrier, OCN, routing number and porting status.
- Line type lookup API: mobile, landline or VoIP.
- Landline SMS lookup: which landlines can receive texts.
- Bulk phone validation: CSV upload, up to 1,000,000 rows.
- TCPA litigator scrub and state DNC scrub.
- Plans and overage rates: pricing.
Comparisons: common questions
Which phone validation API should I use?
It depends on where your numbers are and what you do with them. For numbers worldwide, Twilio Lookup, Abstract API or Numverify. For calling or texting US and Canadian numbers, where porting, deliverability and TCPA screening matter, CheckThatPhone.
Where do the competitor facts come from?
From each vendor's own public pricing and documentation pages, linked next to each fact on the comparison pages and checked on October 3, 2026. Where a competitor is stronger, we say so. CheckThatPhone is our product.