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numlookupapi.com
What it is
numlookupapi.com is a JSON REST API for validating phone numbers and retrieving details such as country, location, carrier, line type, and time zones across more than 230 countries. Location and carrier fields may be empty, and the API does not identify the person behind a number. It can validate up to 100 numbers in one request and returns E.164 and national formats, along with a tel: link for click-to-call. Supported line types include mobile, landline, toll-free, premium-rate, satellite, VoIP, shared-cost, personal, and UAN. Developers can use HTTP API access with API-key authentication, SDKs for JavaScript, Ruby, PHP, and Python, or the linked Postman collection; a hosted MCP server is also available for AI agents. The service is intended for workflows such as inbound call and lead screening, contact-center routing, and fraud signals. A free plan allows 100 requests at 10 requests per minute. Paid plans start at $9.99/mo; the Basic plan includes 5,000 requests per month and no rate limit.
For and against
For
- Checks numbers across 230+ countries.
- Supports batches of up to 100 numbers.
- Identifies multiple phone line types.
- SDKs available for four programming languages.
- Free plan includes 100 requests.
Against
- Location and carrier fields may be empty.
- Free plan is limited to 10 requests per minute.
- Does not return a person's name or address.
The verdict
numlookupapi.com focuses on phone validation and number attributes, with batch requests and several developer access options. Check the free plan's request and rate limits against your expected volume; paid plans start at $9.99/mo.
Who it suits
It suits developers and teams that need phone-number validation or carrier and line-type details for screening, routing, or fraud signals. It does not provide the name or address of the person associated with a number.
Plans and prices
Basic
5,000 Requests · Batch Validation · 1 API Key · No Rate Limit
Read 8 Oct 2026 · numlookupapi.com
Pro
50,000 Requests · Batch Validation · 2 API Keys · Sandbox API Keys
Read 8 Oct 2026 · numlookupapi.com
Scale
250,000 Requests · Batch Validation · 5 API Keys · Sandbox API Keys
Read 8 Oct 2026 · numlookupapi.com
Custom
Custom Requests · Batch Validation · Custom API Keys · Sandbox API Keys
Read 8 Oct 2026 · numlookupapi.com
Free
100 Requests · Batch Validation · 1 API Key · 10 Requests / Min.
Read 8 Oct 2026 · numlookupapi.com
On the record
- API interface
- The documentation describes HTTP API access, API-key authentication through HTTP headers or GET parameters, and a hosted MCP server for AI agents.numlookupapi.com · read 8 Oct 2026
- Batch validation
- The API supports up to 100 phone numbers in one request.numlookupapi.com · read 8 Oct 2026
- Core product
- Numlookupapi is a JSON REST API for validating phone numbers and looking up carrier, line type, and location in 230+ countries.numlookupapi.com · read 8 Oct 2026
- Data sources
- The pricing FAQ says lookup data comes from several phone data providers and international carriers.numlookupapi.com · read 8 Oct 2026
- Developer integrations
- Official SDKs are available for JavaScript, Ruby, PHP, and Python, and the documentation links to a Postman collection.numlookupapi.com · read 8 Oct 2026
- Intended use
- The maker describes inbound call and lead screening, contact-center routing, and fraud signals as use cases.numlookupapi.com · read 8 Oct 2026
- Lookup fields
- A lookup can return country, location, carrier, line type, and time zones; location and carrier may be empty.numlookupapi.com · read 8 Oct 2026
- No people identity
- The API does not return the name or address of the person behind a phone number.numlookupapi.com · read 8 Oct 2026
- Number formatting
- The homepage says results include E.164 and national formats plus a tel: link for click-to-call.numlookupapi.com · read 8 Oct 2026
- Privacy details
- The policy says the site may collect names and email addresses and may use cookies, and describes GDPR rights including access, correction, deletion, and portability.numlookupapi.com · read 8 Oct 2026
- Rate limits
- The pricing page lists 10 requests per minute on Free and says paid plans have no rate limit.numlookupapi.com · read 8 Oct 2026
- Reliability
- The pricing FAQ reports 99.99% API uptime over the preceding 12 months and links users to a status page for current status.numlookupapi.com · read 8 Oct 2026
- Security and privacy
- The privacy policy says technical and organizational measures are used to prevent unauthorized access, alteration, disclosure, or destruction of personal data.numlookupapi.com · read 8 Oct 2026
- Support
- The maker says technical support questions receive an actionable reply within 24 hours and directs users to its support team.numlookupapi.com · read 8 Oct 2026
- VoIP and line types
- The service identifies mobile, landline, toll-free, premium-rate, satellite, VoIP, shared-cost, personal, and UAN number types.numlookupapi.com · read 8 Oct 2026
