numberRank

dev.numberrank/numberrankVersion 1.0.0

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

Status

Responds268 msNov 14, 2026, 14:26 UTCAnswered our handshake without sign-in.

We could not refresh it, so this page shows the last copy.

Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://numberrank.dev/mcpResponds268 msNov 14, 2026, 14:26 UTC

No sign-in

claude mcp add --transport http numberrank https://numberrank.dev/mcp

1
2
3

Settings > Connectors > Add custom connector
Name: numberrank
Remote MCP server URL: https://numberrank.dev/mcp

{
  "mcpServers": {
    "numberrank": {
      "url": "https://numberrank.dev/mcp"
    }
  }
}

code --add-mcp '{"name":"numberrank","type":"http","url":"https://numberrank.dev/mcp"}'

Built your own server? run.zero hosts MCP servers on European infrastructure.

2 tools

Tools of numberRank
	Description		Read-only	Idempotent	Open world
`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.	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.	No	Yes	Yes	Yes
`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.	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.	No	Yes	Yes	No

Registry status: Active
Published: Sep 16, 2026
Updated: Sep 16, 2026
Website: https://numberrank.dev/⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared