2) NumLookup API

NumLookup API is a service that validates phone numbers and provides detailed information such as the number's format, type, location, and associated service provider. It is particularly useful for verifying phone numbers on web forms, cleansing contact databases, and optimizing communication channels.
API Features
- Phone Number Validation: Determines if a phone number is valid and provides a response indicating its validity.
- Phone Number Formatting: Returns the phone number in the standardized E.164 format, ensuring international compatibility.
- Service Provider Information: Identifies the carrier or service provider associated with the phone number, aiding in network understanding and cost management.
NumLookup API Pricing
- Free: Offers 100 requests per month with a limit of 10 requests per minute and includes 1 API key.
- Small: Priced at $9.99 per month, this plan includes 7,000 requests with no rate limit and 1 API key. E-mail support is also provided.
- Medium: For $44.99 per month, users get 65,000 requests, 2 API keys, sandbox API keys, no rate limit, e-mail support, and team management features.
- Large: At $89.99 per month, this plan offers 300,000 requests, 5 API keys, sandbox API keys, no rate limit, tailored support, team management, IP white- & blacklisting, URL whitelisting, SLA, and overages.
- Custom: Custom pricing for custom requests, API keys, sandbox API keys, no rate limit, tailored support, team management, IP white- & blacklisting, URL whitelisting, custom SLA, and overages. Contact support for more details.
3) Loqate Phone Validation

Loqate Phone Validation is a comprehensive service designed to validate phone numbers globally, ensuring accuracy and reliability for businesses and developers. It offers features such as real-time validation, carrier identification, and format standardization to enhance data quality and streamline communication processes.
API Features
- Real-Time Validation: Instantly verifies phone numbers as they are entered, ensuring immediate accuracy and reducing errors.
- Carrier Identification: Identifies the mobile network operator associated with the phone number, aiding in targeted communication strategies.
- Format Standardization: Converts phone numbers into a standardized format, enhancing consistency and compatibility across different systems.
Loqate Phone Validation Pricing
- £2500 Plan: 3.1p per phone validation lookup. Suitable for large businesses requiring high-volume lookups.
- £1000 Plan: 3.7p per phone validation lookup. Designed for medium-sized businesses with moderate lookup needs.
- £500 Plan: 4.5p per phone validation lookup. Ideal for small businesses with occasional lookup requirements.
- £250 Plan: 5.3p per phone validation lookup. Best for startups or small businesses with limited lookup needs.
- £100 Plan: 6.1p per phone validation lookup. Suitable for very small businesses or testing purposes.
4) Trestle Phone Validation API

Trestle Phone Validation API is designed to validate customer phone numbers during onboarding, enhancing account protection and customer experience during two-factor authentication (2FA) and ensuring effective communication during support and service cases.
API Features
- Real-Time Phone Number Validation: The API allows for immediate validation of phone numbers as they are entered, ensuring that the data is accurate and up-to-date.
- Integration with Two-Factor Authentication (2FA): The service supports the common security practice of 2FA, enhancing account protection by ensuring that the phone numbers used for authentication are valid.
- Global Phone Number Validation: The API can validate phone numbers from various countries, making it suitable for businesses with a global customer base.
Trestle Phone Validation API Pricing
- Phone Validation API: $0.015 per query. This API validates phone numbers, determines carrier name, line type, prepaid status, and identifies disconnected phone numbers with a phone activity score.
- Real Contact API: $0.03 per query. This API verifies phone, email, and address information with contact grades, a phone activity score, and name matches.
- Reverse Phone API: $0.07 per query. This API verifies and enriches phone numbers to owner names, demographics, phone metadata, current addresses, and email addresses.
- Reverse Address API: $0.07 per query. This API enriches addresses with demographics, historical addresses, email addresses, and associated phone numbers.
- Find Person API: $0.07 per query. This API enriches individual information, including name, demographics, current and historical addresses, phone numbers, and email addresses.
5) Numverify

Numverify is a robust phone validation service that offers real-time validation, carrier identification, and format standardization to ensure the accuracy and reliability of phone numbers for businesses and developers.
API Features
- Phone Activity Score: Provides a 1–100 rating for phone activity volume, indicating whether the phone is connected or disconnected.
- Line Type Identification: Identifies seven unique line types, including mobile, fixed and non-fixed VoIP, landline, premium, toll-free, and voicemail service.
- Prepaid Status: Indicates whether a mobile number is part of a prepaid plan, helping to distinguish between prepaid and postpaid plans.
Numverify Pricing
- Free Plan: Offers 100 API requests per month with no support and includes real-time number validation, carrier & line type detection, country & location detection, and 256-bit HTTPS encryption.
- Basic Plan: Priced at $14.99 per month or $161.99 per year, this plan includes 5,000 API requests per month, standard support, and overages at $0.004497 per additional request.
- Professional Plan: Costs $59.99 per month or $629.99 per year, providing 25,000 API requests per month, standard support, and overages at $0.0035994 per additional request.
- Enterprise Plan: Available for $129.99 per month or $1,325.99 per year, it includes 60,000 API requests per month, standard support, and overages at $0.00324975 per additional request.
- Volume Plan: Custom pricing for any volume needed. Requires contacting support for details on overages, support, and features.
What to Consider When Selecting a Amazon Pinpoint Phone Number Validation Alternative?
- Global Coverage: Ensure the service supports phone number validation across multiple countries to cater to a diverse customer base.
- Real-Time Validation: Look for APIs that offer instant validation to reduce errors and improve data accuracy during customer interactions.
- Carrier and Line Type Identification: Choose a service that identifies the carrier and line type (e.g., mobile, landline, VoIP) to optimize communication strategies.
- Integration Ease: Opt for APIs with extensive documentation, code snippets, and support for various programming languages to facilitate seamless integration.
- Scalability and Pricing: Consider the scalability of the service and its pricing plans to ensure it meets your business needs without incurring excessive costs.
Which One Should You Go With?
Each of the phone validation services discussed offers unique features and pricing plans, making them suitable for various business needs. Whether you prioritize real-time validation, global coverage, or integration ease, there's a solution that fits your requirements.
If you're looking for a reliable alternative, we recommend Abstract API. With its extensive global coverage, fast response times, and robust security measures, Abstract API stands out as a top choice for businesses seeking efficient and accurate phone validation.