NumRadar vs ZelNum
NumRadar is ahead of ZelNum on WhatsApp number check APIs: Overall score 73.6 to 66.4.
WhatsApp number check API
| Rank | Provider and plan | Overall score | Accuracy score | Median answer time | $ per 1,000 phones |
|---|---|---|---|---|---|
| 1 | NumRadar, €249 monthly, Enterprise · numradar.app | 73.6 | 100 | 0.82 s | $0.93 |
| 2 | ZelNum, $200 pack, Pay as you go, $200 top-up · zelnum.com | 66.4 | 100 | 0.62 s | $7.27 |
Every provider of this API, ranked: WhatsApp number check API: best providers in 2026