numberRank
Is a phone number VoIP or a real carrier line? Line type, score and grade, free, no auth.
Connect it
Settings → Connectors → Add custom connector
URL: https://numberrank.dev/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://numberrank.dev/mcp{
"mcpServers": {
"numberrank": {
"url": "https://numberrank.dev/mcp"
}
}
}claude mcp add --transport http numberrank https://numberrank.dev/mcp{
"servers": {
"numberrank": {
"type": "http",
"url": "https://numberrank.dev/mcp"
}
}
}2 tools, verified live
check_numberread-onlyTells you whether a phone number is VoIP or a real carrier line, with a 0 to 100 score and letter grade, using Twilio Lookup line type intelligence. Use it before relying on a number for SMS or OTP verification. US numbers can be 10 digits; any other country needs + and the country code.
directoryread-onlyReturns the numberRank directory: AI agent phone providers and personal agents graded by whether their published and provisioned numbers read as real carrier lines or VoIP. Numbers are masked.
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