Listar vs ZelNum
ZelNum is ahead of Listar on WhatsApp number check APIs: Overall score 66.4 to 63.1.
WhatsApp number check API
| Rank | Provider and plan | Overall score | Accuracy score | Median answer time | $ per 1,000 phones |
|---|---|---|---|---|---|
| 3 | Listar, top-up from €10 · listar.fr | 63.1 | 100 | 0.47 s | $22.51 |
| 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