llms.txt
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− €99 per 100,000 up to 1,000,000. Extra validations never expire. Use them while you have a paid plan. Higher rate+ €99 per 100,000 or $99 per 100,000 (in your subscription currency) up to 1,000,000. Extra validations never expire. Use them while you have a paid plan. Higher rate+ - [Chrome extension](https://numradar.app/extension): check WhatsApp registration on websites you+ enable, scan the current tab, or paste a bulk list from Chrome's side panel with your `nr_live_`+ API key. Install from the [Chrome Web Store](https://chromewebstore.google.com/detail/numradar-wa-numbers-verif/mpjaphhlmhflhlnegednadjegmeehahj).+ ## Blog and guides+ - [Blog (English)](https://numradar.app/blog), [Blog (Español)](https://numradar.app/es/blog) and+ [Blog (Português)](https://numradar.app/pt-br/blog): practical guides on WhatsApp Business message+ templates, E.164 spreadsheet formatting, pre-send WhatsApp number validation, Meta per-message+ pricing, error codes `131026` and `131049`, n8n fallback routing, Clay enrichment, and MCP agent+ workflows. Every published article is also served as clean markdown by appending `.md` to its URL+ (for example `https://numradar.app/blog/whatsapp-business-message-templates.md`).