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Terms of Service

Last updated: October 10, 2026

1. Acceptance

By creating an account at checkthatphone.com or making any request to the CheckThatPhone API, you agree to be bound by these Terms of Service and the Privacy Policy. If you do not agree, do not use the service. We record the version of these Terms in force when you create your account, and again when you accept an updated version from your dashboard.

2. Definitions

  • Customer — you or the entity you represent.
  • Service — the CheckThatPhone API, website, and dashboard.
  • API Key — the secret bearer token issued from your dashboard, used to authenticate API requests.
  • Credit — the unit of API consumption. A standard lookup costs 1 credit. Add-on features cost an additional credit each (see Section 6).

3. Account Registration

You must provide accurate and complete information when registering, keep your password and API keys confidential, and promptly notify us of any unauthorized use of your account. You may not share an account, and each account is for use by a single individual or entity.

4. API Access and Use

Your API key authenticates all requests on your behalf. You are responsible for all usage and charges incurred under your API key. If a key is exposed, revoke it from the dashboard immediately and issue a new one. We may revoke keys without notice if we detect suspected abuse or compromise.

5. Acceptable Use Policy

You may not use the service to:

  • Violate any law or regulation, including the Telephone Consumer Protection Act (TCPA) and equivalent state or international laws
  • Harass, stalk, intimidate, or target any specific individual
  • Attempt unauthorized access to our systems, other customers' data, or our upstream providers
  • Reverse-engineer, decompile, or disassemble the service
  • Scrape the website or dashboard outside of normal browser usage
  • Resell, sublicense, or redistribute API responses as a competing product without our written permission
  • Spam, send unsolicited communications, or use validation results to facilitate spam
  • Submit phone numbers you do not have a lawful basis to look up
  • Make or support decisions about a person's eligibility for credit, insurance, housing, employment, or any other purpose regulated by the Fair Credit Reporting Act or similar laws

Violations may result in account suspension or termination without refund.

6. Plans and Fees

Our current plans (all USD, current as of the "Last updated" date above):

  • Free — $0/month. 500 lookups per month, hard-capped. A valid card on file is required to verify the account and prevent abuse. The card is verified with the issuing bank without being charged; no payment is taken, and the Free plan has no overage.
  • 1K — $5/month. 1,000 credits included; overage at $0.005 per credit.
  • 10K — $30/month. 10,000 credits included; overage at $0.003 per credit.
  • 100K — $100/month. 100,000 credits included; overage at $0.001 per credit.
  • 500K — $450/month. 500,000 credits included; overage at $0.0009 per credit.

Add-on features cost an additional credit per lookup:

  • TCPA litigator filter — +1 credit per lookup when enabled.
  • Landline SMS lookup — +1 credit when applied (only landlines).

Prices may change. We will notify active customers by email at least 30 days before any price increase takes effect on their account.

7. Billing and Payment

Paid subscriptions bill monthly via Stripe. Overage usage is metered throughout the period and pushed to Stripe daily. Subscription fees are charged on each renewal date; overage appears on the next invoice. Failed payments may result in a grace period followed by suspension of API access until payment is restored.

8. Plan Changes, Refunds, and Credits

Subscription fees and metered overage charges are non-refundable. We do not prorate, credit, or refund plan changes. Upgrades take effect immediately at the new plan's full rate and begin a new billing period; the unused remainder of your previous plan is not credited. Downgrades take effect at the end of your current billing period — you keep your current plan and its included credits until then, and no credit or refund is issued. We do not issue cash refunds for the unused remainder of a paid period.

9. Cancellation

You may cancel a paid subscription at any time from the billing page. API access continues until the end of the current paid period; we do not refund the unused portion. You may delete your account entirely by contacting hello@checkthatphone.com.

10. Termination by Us

We may suspend or terminate your access at any time for material breach of these Terms, violation of the Acceptable Use Policy, suspected fraud, chargebacks, or prolonged non-payment. We will notify you by email when reasonable to do so.

11. Service Availability

We operate the service on a best-effort basis. This version of the Terms does not include a contractual uptime SLA. The service depends on upstream providers, and we are not liable for outages, errors, or degradations originating with those providers. For accounts that need an SLA, contact us for an enterprise agreement.

12. Intellectual Property

We retain all rights, title, and interest in and to the service, including the website, API, dashboard, documentation, and all underlying software. You retain rights to the data you submit; you grant us a limited, non-exclusive license to process the phone numbers and IP addresses you submit solely to perform the lookups you request.

13. Disclaimers

The service is provided "as is" and "as available" without warranties of any kind, whether express or implied. Carriers do not guarantee actual SMS or call delivery; our action recommendations are advisory and not guarantees. To the maximum extent permitted by law, we disclaim all implied warranties including merchantability, fitness for a particular purpose, and non-infringement.

Compliance data is not legal advice. Compliance-related signals returned by the service — including litigator flags, do-not-call registry results, complainer-list results, and coverage indicators — are informational screening data intended to help you reduce risk. They are not legal advice, do not constitute a determination that any communication is lawful, and do not guarantee compliance with the TCPA, federal or state do-not-call rules, or any other law. Data sources are updated on the schedules described in our documentation and may be incomplete or contain errors. You remain solely responsible for your outbound communications, including consent records, internal opt-out lists, federal Do-Not-Call registry obligations, registries in states our data does not cover, and consulting your own counsel where appropriate.

Third-party data and the meaning of a result. Certain results, including litigator, do-not-call, and complainer screening, are derived from public records and third-party data sources that we do not own or control and do not independently verify in every case. Results may contain errors, omissions, outdated information, or incorrect associations between a telephone number and a person, including false-positive and false-negative matches. A result indicating no match means only that no match was found in the sources checked at the time of the request; it is not a determination that the number has never been associated with litigation, complaints, or any registry. A "send" action means the number passed the technical and screening checks enabled for that request; it is not a determination that you have consent or any other lawful basis to contact the subscriber.

14. Limitation of Liability

To the maximum extent permitted by law, CheckThatPhone shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, including lost profits, lost revenue, or lost data, arising from or related to your use of the service. Our total liability for any claim arising under or related to these Terms shall not exceed the amounts you paid us in the twelve (12) months preceding the event giving rise to the claim.

15. Indemnification

You agree to defend, indemnify, and hold harmless CheckThatPhone and its operators from any claims, damages, losses, and expenses (including reasonable attorneys' fees) arising out of your use of the service, your violation of these Terms, or your misuse of data retrieved through the service — including but not limited to TCPA, CCPA, or GDPR claims related to your outbound communications.

16. Customer Representations

You represent and warrant that you have a lawful basis to submit each telephone number you look up; that you will use results only in compliance with applicable law, including the TCPA, state telemarketing and do-not-call laws, and privacy laws; and that you will not use the service, or any result, to make or support decisions about a person's eligibility for credit, insurance, housing, employment, or any other purpose regulated by the Fair Credit Reporting Act or similar laws.

17. Records

We do not retain the telephone numbers submitted for lookup or the individual results returned beyond what is needed to deliver them to you. You are responsible for preserving any lookup records you need for compliance, audit, or legal purposes, for example by storing the response, including its timestamp, alongside your own consent and campaign records. We cannot reconstruct, verify, or certify a past lookup that you have not retained.

18. Governing Law and Disputes

These Terms are governed by the laws of the State of California, USA, without regard to its conflict-of-laws principles. Any dispute arising under or relating to these Terms shall be resolved exclusively in the state or federal courts located in California, and you consent to the personal jurisdiction of those courts.

19. Changes to These Terms

We may update these Terms from time to time. Material changes will be announced by email to active account holders and noted with a new "Last updated" date. Continued use of the service after a change indicates acceptance of the updated Terms.

20. Entire Agreement

These Terms, together with the Privacy Policy, constitute the entire agreement between you and CheckThatPhone regarding the service and supersede any prior agreements relating to the same subject matter. These Terms are solely for the benefit of you and us. They do not confer any right, remedy, or claim on any other person, including any individual whose telephone number is submitted to the service.

21. Contact

Questions about these Terms: hello@checkthatphone.com.

Related: Privacy Policy

CheckThatPhone provides real-time phone validation for US & Canada numbers.

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