numberRank

Name: numberRank
Author: dev.numberrank

MCP serverMCP

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

by dev.numberrankhomepage ↗v1.0.0

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Observed by Wellknown

Evidence

Everything here was measured by our prober or read from a registry. Nothing is self-reported.

30-day availability86/86 checks ok

when	check	result	http	latency	detail
2 h ago	mcp initialize	ok	200	139 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
8 h ago	mcp initialize	ok	200	136 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
15 h ago	mcp initialize	ok	200	156 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
22 h ago	mcp initialize	ok	200	138 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
29 h ago	mcp initialize	ok	200	133 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
2 d ago	mcp initialize	ok	200	140 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
2 d ago	mcp initialize	ok	200	149 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
2 d ago	mcp initialize	ok	200	131 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
2 d ago	mcp initialize	ok	200	131 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools
3 d ago	mcp initialize	ok	200	133 ms	server numberrank 1.0.0 · protocol 2025-06-18 · 2 tools

Tools observed via MCP handshake

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 befo
directory — Returns the numberRank directory: AI agent phone providers and personal agents graded by whether their published and provisioned numbers read as real carrier li

Declared by sources

What the publisher says

Attributed to the source that supplied each field. Treated as claims, not facts.

No long description beyond the summary.

kind Official MCP Registry

name Official MCP Registry

summary Official MCP Registry

version Official MCP Registry

description Official MCP Registry

homepageUrl Official MCP Registry

publisherName Official MCP Registry

Derived by Wellknown

Capabilities

Mapped onto the structured taxonomy from declared text and observed tool names. Confidence shown for derived entries.

communication.sms-voiceSMS & Voice100%dev.filesystemFilesystem54%ai.agent-discoveryAgent Discovery54%

Provenance

Where this record came from

Every source is kept verbatim. Field changes are logged as events.

Official MCP Registrydev.numberrank/numberrank

first seen 23 d ago · fetched 2 d agoopen ↗

Field history (6 recent events)

23 d ago · declared · summary → "Is a phone number VoIP or a real carrier line? Line type, score and grade, free, no auth."
23 d ago · declared · description → "Is a phone number VoIP or a real carrier line? Line type, score and grade, free, no auth."
23 d ago · declared · publisherName → "dev.numberrank"
23 d ago · declared · homepageUrl → "https://numberrank.dev"
23 d ago · declared · version → "1.0.0"
23 d ago · declared · protocols → ["mcp"]