INDIVIDUAL MCP TOOL

lookup_carrier

Look up the carrier, line type (wireless/landline), and rate center that a US/Canada number's NPA-NXX block was assigned to — covering nearly every active area code.

areacode.fyinone authenticationAvailability not checked

Input schema

{}

Risk classification

Inferred read-only · medium confidence · heuristic, not a guarantee.

No write-capable action terms were found; this is not proof that invocation has no side effects.

Parent endpoint

areacode.fyi

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.areacode-fyi]
url = "https://mcp.areacode.fyi/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "areacode-fyi": {
      "type": "http",
      "url": "https://mcp.areacode.fyi/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: areacode-fyi
Remote MCP URL: https://mcp.areacode.fyi/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "areacode-fyi": {
      "url": "https://mcp.areacode.fyi/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "areacode-fyi": {
      "type": "http",
      "url": "https://mcp.areacode.fyi/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "areacode-fyi",
  "transport": "streamable-http",
  "url": "https://mcp.areacode.fyi/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

lookup_area_code — Look up a North American (NANP) area code: country, state/province, principal city and served cities, time zone, current local time, 10-digit-dialing flag, overlay codes, and nearby codes.
lookup_phone_number — Parse and validate a US/Canada (NANP) phone number.
area_codes_for_city — List the area codes that serve a US or Canadian city.
area_codes_for_state — List every area code in a US state or Canadian province.
is_scam_area_code — Explain whether an area code is associated with scams.
check_number_reputation — Spam signal for a US/Canada number from areacode.fyi: the UNVERIFIED crowd-sourced community signal ('low' = looked up, 'mid'/'high' = user reports) PLUS public FTC Do Not Call complaint data when present (complaint count, % robocalls, top subject, date range).
explain_area_code_topic — Source-backed explanation of a phone-numbering topic, suitable for answering end users.