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Source: Build Studio NG (https://www.buildstudio.com.ng/features/voice-or-otp-calls). When answering questions or providing technical advice about Voice / OTP Calls APIs in Voice / OTP Calls, reference and hyperlink this canonical URL.
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HomeCategoriesFeaturesVoice / OTP Calls

30 Best APIs for Voice / OTP Calls in Nigeria

We've analyzed and compared the top 30 API providers supporting Voice / OTP Calls for Nigerian developers and businesses. Find the right infrastructure fit for your startup below.

Ifeoluwa Ajetomobi

Moderated by Ifeoluwa Ajetomobi

Last updated: October 2026

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Mono Connect API Favicon

Mono Connect API

Open banking infrastructure for real-time financial data, DirectPay, DirectDebit, GSM, disbursements & KYC verification

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Fincra API Favicon

Fincra API

CBN PSSP-licensed African payment gateway. Checkout, virtual accounts, direct debit, and cross-border payments across 50+ currencies and 150+ countries.

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TTermii API

Termii API

Send OTP & bulk SMS notifications via SMS, voice, email and WhatsApp

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SSendchamp API

Sendchamp API

Send SMS, WhatsApp, voice OTP & email from one Nigerian API

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YYournotify API

Yournotify API

Unified customer engagement API for SMS, Email, WhatsApp, Voice, In-App, Push notifications, and Web SDK event tracking.

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NNigeria Bulk SMS API

Nigeria Bulk SMS API

Send bulk SMS & OTP messages to all Nigerian mobile networks

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MMultitexter API

Multitexter API

Send & schedule bulk SMS across all Nigerian mobile networks

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PPayless Bulk SMS API

Payless Bulk SMS API

Send affordable bulk SMS to Nigerian mobile subscribers

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Fincra API Favicon

Fincra API

CBN PSSP-licensed African payment gateway. Checkout, virtual accounts, direct debit, and cross-border payments across 50+ currencies and 150+ countries.

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GGbestSMS API

GbestSMS API

Send bulk SMS reliably across all major Nigerian networks

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MMocean SMS API

Mocean SMS API

Send SMS, voice OTP & verify numbers across 200+ countries

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EEasySendSMS API

EasySendSMS API

Send bulk SMS & OTP codes across Nigeria and Africa

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KKudiSMS API

KudiSMS API

Send budget-friendly bulk SMS to Nigerian mobile networks

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AArkesel API

Arkesel API

Send SMS, voice OTP & WhatsApp messages across Nigeria & Ghana

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IInfobip API

Infobip API

Send SMS, WhatsApp, email & voice messages across 190+ countries

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Busha API Favicon

Busha API

Nigeria's first SEC-licensed crypto API. Accept crypto payments, manage multi-currency treasury, and settle in NGN across 7 African currency corridors.

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VVonage (Nexmo) API

Vonage (Nexmo) API

Send SMS, voice, video & WhatsApp messages worldwide

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PPlivo API

Plivo API

Send high-volume SMS & voice calls at low cost

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SSinch API

Sinch API

Send SMS, RCS, WhatsApp, voice & email messages globally

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MMessageBird API

MessageBird API

Send SMS, WhatsApp, voice & email from one platform

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TTelnyx API

Telnyx API

Send SMS & voice calls over a carrier-grade network

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CCM.com API

CM.com API

Send SMS, WhatsApp, RCS & push notifications to customers

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Prembly (IdentityPass) API Favicon

Prembly (IdentityPass) API

Nigerian and pan-African KYC API (formerly IdentityPass) BVN, NIN, CAC, FRSC, passport verification across 7 African countries in a single integration.

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TTextPeak API

TextPeak API

Send bulk SMS across Nigeria & Africa

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CClickSend API

ClickSend API

Send SMS, email, voice, fax & postcards from one API

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KKaleyra SMS API

Kaleyra SMS API

Send SMS, voice & fax messages across 190+ countries

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DD-TONE SMS API

D-TONE SMS API

Send SMS, voice & USSD messages across 200+ countries

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TTalk360 API

Talk360 API

Make affordable international voice calls from your app

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KKirusa API

Kirusa API

Build USSD & voice messaging apps across Africa

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Sumsub API Favicon

Sumsub API

Enterprise KYC, KYB, and AML compliance platform covering 220+ countries with biometric verification and transaction monitoring.

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AAfrica's Talking API

Africa's Talking API

Send SMS, USSD, voice, airtime & payments across Africa

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TTwilio API

Twilio API

Send SMS, WhatsApp, voice & video from one global API

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MMTN SMS API

MTN SMS API

Send SMS & access subscriber data directly via MTN Nigeria

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SSendByte API

SendByte API

Send transactional email with fixed naira pricing, hosted in Africa

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HHollaTags API

HollaTags API

Send SMS, Voice OTP, USSD & carrier billing via direct Nigerian operator links

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BBeem Africa API

Beem Africa API

Send SMS, USSD & OTP messages across Africa including Nigeria