Compare
Vonage vs ZelNum
Vonage provides verification APIs for SMS/voice but lacks the extensive social platform coverage.
VonageAPIs for SMS, voice, video and verification
ZelNumVerify phone & email in bulk online or via API — WhatsApp, Telegram, Binance.Which to pick
Pick Vonage if you want…
- Usage-based communications APIs
- SMS/voice verification
Pick ZelNum if you want…
- Bulk phone & messaging verification
- Open-source code (zelnum/zelnum-python on GitHub, MIT license)
Side by side
- What it is
- Vonage:Vonage Communications APIs provide programmable SMS, voice, video, email and verification services via usage-based APIs.
- ZelNum:ZelNum verifies WhatsApp, Telegram, phone and social platform numbers and provides carrier, risk and activity signals.
- Best for
- Vonage:Usage-based communications APIs
- ZelNum:Bulk phone & messaging verification
- Who it’s for
- Vonage:Developers building messaging, voice, video and authentication features into apps
- ZelNum:Teams that need to clean contact lists, run campaigns, or verify user accounts.
- Pricing
- Vonage:Freemium
- ZelNum:Pay as you go
- Plans
- Vonage:—
- ZelNum:WhatsApp Number Checker $0.5 per 10K lookups · Telegram Number Checker $1.5 per 10K lookups · Phone Validation $4 per 10K lookups
- Open source
- Vonage:—
- ZelNum:Yes, 0 GitHub stars
- Works with
- Vonage:AWS, SMS, MMS, RCS, WhatsApp, Facebook Messenger, Viber, SIP Trunking
- ZelNum:—
Vonage features
- Programmable SMS & Messaging. Send SMS, MMS, RCS, WhatsApp and other channel messages with per-message pricing.
- Voice API. Make and receive high-quality programmable voice calls billed per second.
- Video API. Create live, customizable video sessions with cost-per-minute billing.
- Verify & 2FA. Add two-factor authentication and fraud protection, paying only for successful verifications.
- In-App Messaging. Embed branded chat experiences inside web or mobile apps with per-message rates.
- Identity Insights. Retrieve real-time customer data on demand with pay-per-request pricing.
ZelNum features
- Real-time & bulk checks. Validate WhatsApp, Telegram and phone numbers instantly or via CSV/TXT uploads.
- Carrier & line-type lookup. Add carrier, line type and routing signals to each number.
- Risk & activity signals. Get registration status, account age, online presence and VoIP risk indicators.
- API integration. Automate single lookups or batch jobs through REST endpoints.
- Multi-platform coverage. Supports 40+ platforms including social apps and crypto exchanges.
- Exportable results. Download cleaned segments (valid, inactive, risky) for CRM or marketing use.
Vonage vs ZelNum FAQ
Is Vonage or ZelNum free?+
Vonage has a free plan and paid plans.
Is Vonage or ZelNum open source?+
ZelNum is open source (zelnum/zelnum-python on GitHub, MIT license). DevHunt has no public source repository on record for Vonage.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.