Features & benefits
Everything Nummeropslag.dk can do — explained, feature by feature.
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Company from the official CVR
See the registered company behind the number — directly from the official CVR register with 2.7 million companies.
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Which operator is behind it
Find out which operator a Danish number belongs to — from the official number register (SDFI, CC0).
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Spam and scam warnings
Warnings about spam, telemarketing and scams — built on real user reports and protected against manipulation.
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Private by design
Danish and privacy-friendly: we never upload your contacts and never show the names of private individuals.
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Trust score 0–100
One simple score gathers all the signals, so you quickly know whether to take the call.
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SMS spam filter for iPhone
Filter spam and scam SMS automatically on iPhone — known spam messages go into a separate folder.
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AI & MCP integration
Look up Danish numbers directly from Claude and other AI agents via our MCP server.
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iPhone Live Caller ID
See who's calling on iPhone — with Apple's Live Caller ID and a privacy-friendly PIR backend.
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Apps · API · For business · Guides