Check whether any Indian mobile number is DND-registered — one number at a time, or thousands in a single bulk upload. Every check runs against the official TRAI/NCPR registry, no free-tier shortcuts, no estimates.
The DND Number Checker is a paid, accuracy-first tool — there is no free tier, and no watered-down "estimate" mode. Every lookup, whether it's a single number entered manually or a CSV/TXT file with thousands of contacts, is checked against the official TRAI/NCPR DND registry. If you're preparing a promotional SMS or voice campaign and need to know exactly who you're legally allowed to message, this is the tool for that step.
Enter a mobile number, complete payment for the check, and get an instant DND / Non-DND result on screen.
Straightforward per-check and per-batch pricing — no subscription required for occasional use.
Every DND status result returned by this tool comes from the official TRAI/NCPR (National Customer Preference Register) registry — the same authoritative registry telecom operators use to block promotional SMS and calls at the network level. We don't rely on third-party aggregated guesses or stale cached lists.
Because subscribers can register or de-register from DND at any time, no DND check — however accurate at the moment it runs — stays valid indefinitely. For campaigns spaced weeks or months apart, re-check your list before each send rather than reusing an old result.
Need something beyond one-off checking? See the full DND Filter service hub for scrubbing, API access, and software options, or check our DLT registration support if your sender ID and templates aren't approved yet — you'll need both to run a fully compliant promotional campaign.
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