# Telcodata (telcodata.us)

Looks up telephone numbering data: area codes, exchanges, carriers, switches and ownership via search, CSV exports and an API.

- Atlas card: https://inite.ai/en/atlas/telcodata.us
- Site: https://telcodata.us
- For: telecom and robocall-compliance professionals looking up phone number carrier and switch data
- Categories: dev
- Use not measured/100 · alive 100/100

## Used for

- look up which carrier holds a phone number
- find the switch and rate center for a number
- check robocall mitigation contacts for a carrier

## Price

Not read yet.

## For developers

- MCP server: us.telcodata/telcodata (namespace; open on 2026-10-27, 21 tools)
- Status page: http://status.telcodata.us/2007/10/28/nanpa-clli-removal
- Read 2026-10-27

## MCP server, measured daily

Server: https://api.telcodata.us/mcp, checked every day since 2026-10-27 (7 checks).

- Answered: 100% of daily checks
- Median first answer: 278 ms
- Sign-in: none
- Context its tool definitions take: about 4462 tokens (21 tools)
- Tool definitions: B, 83/100
- Failing "params_described": 1 of 21 tools
- Failing "annotations": 21 of 21 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-27

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Source: INITE Atlas, https://inite.ai/en/atlas/telcodata.us. JSON: https://inite.ai/api/atlas/telcodata.us. MCP: https://inite.ai/api/mcp (atlas_lookup).