Comparison
wavalid vs. ZelNum
How wavalid compares to ZelNum for validating WhatsApp numbers before you send.
Best fit for bulk WhatsApp checking
For a single flat credit price, an MCP server, and a Chrome extension alongside the API, wavalid is the stronger fit. ZelNum can make sense if you're already checking numbers across Telegram or carrier lookups in the same workflow.
Try wavalid freeBest overall
wavalid, for one credit price, bulk CSV, an API, and an MCP server.
Best for multi-platform lookups
ZelNum, if you also need Telegram or carrier checks in the same tool.
Best developer fit
wavalid's REST API and MCP server plug straight into AI agents and pipelines.
Evaluation criteria
Bulk support, pricing clarity, WhatsApp focus, and AI-agent integration.
Where ZelNum falls short
Built for 40+ platforms, not WhatsApp
WhatsApp checks sit alongside Telegram, carrier, and crypto-exchange lookups, so it's a generalist tool, not a WhatsApp specialist.
No MCP server or Chrome extension
Only a web dashboard and API, no AI-agent integration and no in-browser checking.
Pricing split across products
Phone validation, WhatsApp checks, and Telegram checks are billed separately per 10K lookups, so costs get harder to track once you use more than one check type.
Tired of tracking pricing across ZelNum's per-platform meters?
Try wavalid freeFeature by feature
| Feature | wavalid | ZelNum |
|---|---|---|
| Real-time single check | Free tool | |
| Bulk CSV validation | ||
| REST API | ||
| MCP server | Not offered | |
| Chrome extension | Not offered | |
| Stores your contacts | Not stated | |
| Country coverage | 195+ | Not stated |
| Pricing model | Credits | Per-platform, pay-as-you-go |
Which should you choose?
Choose based on list volume, budget predictability, and whether you need AI-agent or Chrome extension access.
For quick one-off checks
wavalid's free single-number test or Chrome extension, no CSV upload needed.
For agencies and marketers
wavalid's bulk CSV upload at one flat credit price. ZelNum also works if you're already checking Telegram or carrier data per client.
For developers
wavalid's REST API and MCP server return single or bulk WhatsApp checks with predictable response fields, ready for AI agents.
wavalid vs. ZelNum, answered
See how wavalid checks a list
Validate a sample list in minutes, no credit card required.