2 Best APIs for Bulk CSV Upload in Nigeria

Veriphone is a phone number validation and carrier lookup API that provides real-time phone intelligence for developers and businesses across 249 countries and territories. Built for simplicity and speed, Veriphone delivers carrier name, line type, number format validation, and country/region identification in a single API call with millisecond latency. The platform's standout pricing model sets it apart from competitors: pay-as-you-go credits never expire, eliminating the wastage risk of monthly subscription plans with unused quota. The free tier includes 1,000 real validations per month without requiring a credit card. ## What the API Does Veriphone validates phone numbers and enriches them with carrier and line type metadata. A single API call returns: - **Validation status**: Whether the phone number is valid and likely active. - **E.164 formatted number**: Standardizes any regional format to international E.164 format (e.g., `+2348012345678` for Nigerian numbers). - **Country**: The country associated with the number, including Nigeria (+234). - **Carrier**: The mobile network operator (e.g., MTN Nigeria, Airtel Nigeria, Globacom, 9mobile). - **Line type**: Classifies the number as mobile, landline, or VoIP. - **Region**: Sub-national region associated with the number prefix where available. Beyond real-time API queries, Veriphone supports bulk validation via CSV upload — allowing teams to clean entire contact databases without writing API integration code. ## How Developers Use It Integration is a simple GET request: ``` GET https://api.veriphone.io/v2/verify?phone=+2348012345678&key=YOUR_API_KEY ``` The API returns a JSON response with all available metadata. The API key can be passed as a query parameter or in the `x-veriphone-key` header. No SDK is required, though client libraries are available for popular languages. ## Pricing & Fees Veriphone's pricing is developer-friendly and flexible: - **Free Plan**: 1,000 validations per month, no credit card required. Ideal for development and small-scale use. - **Pay-as-you-go**: $0.20 per 1,000 queries (i.e., $0.0002 per validation). Credits purchased are permanent — they never expire regardless of when you use them. - **Subscription Plans**: Monthly plans with lower per-validation rates for consistent usage volumes. The non-expiring credit model is particularly useful for Nigerian projects with unpredictable verification volumes — you buy credits when needed and use them at any pace. ## Authentication Veriphone uses API key authentication. The key is passed as a query parameter (`?key=YOUR_API_KEY`) or as an HTTP header (`x-veriphone-key: YOUR_API_KEY`). API keys are obtained immediately after registration at veriphone.io. ## Rate Limits The free plan allows 1,000 validations per month. Paid plans scale based on credits purchased. No specific per-second rate limit is documented — contact Veriphone for high-frequency use case limits. ## Compliance & Regulations Veriphone is GDPR compliant. The platform operates servers within the EU and automatically deletes submitted phone numbers after validation — no personal data is retained. This data minimization approach is beneficial for Nigerian developers handling user phone numbers under NDPR (Nigeria Data Protection Regulation), which requires appropriate safeguards for personal data. ## Challenges & Gotchas for Nigerian Developers 1. **No SIM Swap detection**: Veriphone does not offer SIM Swap detection — use Twilio Lookup if this signal is needed for fraud prevention. 2. **Carrier data accuracy**: Carrier information can become outdated due to number portability (when a user switches carrier but keeps the same number). Results reflect the number's original carrier assignment, not necessarily the current carrier after port. 3. **Line type for Nigerian numbers**: Nigerian VoIP numbers may not always be classified as VoIP — confirm accuracy for your specific fraud prevention use case before full deployment. 4. **No OTP functionality**: Veriphone validates numbers but does not send OTP codes. Pair with Twilio Verify or a Nigerian SMS gateway for OTP delivery. ## Company Background Veriphone is an independent phone validation service focused on providing simple, affordable, and accurate phone intelligence. The platform positions itself explicitly as a faster and cheaper alternative to Twilio Lookup and Numverify for developers who need carrier and line type data without the complexity of a full communications platform. ## Frequently Asked Questions **Q: Are Nigerian phone numbers (+234) supported?** A: Yes. Nigeria (+234) is included in Veriphone's 249-country coverage. Nigerian carrier identification (MTN, Airtel, Glo, 9mobile) and line type detection are available. **Q: Do credits expire?** A: No. Pay-as-you-go credits purchased on Veriphone never expire. This is one of the platform's key differentiators. **Q: Can I validate Nigerian numbers in bulk?** A: Yes. Veriphone supports bulk validation via CSV file upload from the dashboard without requiring API integration. **Q: Is a credit card required for the free tier?** A: No. The free 1,000 validations/month plan activates immediately after email registration with no payment required.