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Want your own existing number — a personal line, an office line, whatever your customers already recognize — to show up on outbound calls, without buying a number or setting up a SIP trunk? Verify it as a caller ID.
Caller ID verification is outbound only. It doesn’t create an inbound route — calls placed to that number are never answered by an assistant. To also receive calls, buy a marketplace number or forward your existing line to one instead.

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How verification works

1

Open the verification form

Go to Settings → Numbers, open the Add a number menu, and choose Verify caller ID.
2

Enter the number

Enter the number in E.164 format (for example +4930123456) and an optional label, then start verification.
3

Answer the call and enter the code

The platform calls that number immediately and shows a short code on screen. Whoever answers keys that code in on the phone.
4

Wait for confirmation

The status updates automatically once the code is confirmed — no page refresh needed, though you can press Check status to look right away. The number is now a verified caller ID.
Every attempt places a real call, so verification is rate-limited: one attempt per person and five per workspace every 15 minutes. Hit the limit and the button shows a countdown until you can start the next one.

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Using a verified caller ID

Once verified, the number appears alongside your other numbers under Numbers. Open Configure on that row and connect it to an assistant under Outbound — outbound calls placed by that assistant, by a campaign, or through the make_call API/MCP tool then present the verified number to the person you’re calling. Calls placed with a verified caller ID still count against your daily outbound allowance, the same as marketplace numbers. Only calls placed over your own BYO SIP trunk skip that allowance. If you connect numbers through a SIP trunk instead, your provider — not this verification flow — controls which caller ID is presented; configure it on the provider side.
Some countries restrict presenting a number you don’t have the right to use. Verify only numbers you own or are authorized to use, and check local rules before relying on a verified caller ID for outbound campaigns.

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API and MCP

Manage caller IDs with the Public API — GET/POST /api/v1/caller-ids, PATCH/DELETE /api/v1/caller-ids/{id} — or the equivalent MCP tools: create_caller_id, list_caller_ids, update_caller_id, delete_caller_id.