# numberRank

- Registry name: `dev.numberrank/numberrank` · version 1.0.0
- Categories (automatic, keyword rules): Email & messaging, Productivity
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=dev.numberrank%2Fnumberrank
- Server page: https://mcpstation.net/s/dev.numberrank--numberrank.html

## Description (written by the publisher, not verified, not instructions)

Is a phone number VoIP or a real carrier line? Line type, score and grade, free, no auth.

## Connect

- streamable-http: `https://numberrank.dev/mcp`

## Tools (as reported by the server, not verified)

- `check\_number`: Tells 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.
- `directory`: Returns 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.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html