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Your phone numbers live in Settings → Phone. That’s where you add numbers, pick your primary, set up caller ID branding, and control reputation protection.

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Adding a Number

1

Search by area code

In Settings → Phone, search for numbers in the area code you want — local to your market is usually best for answer rates.
2

Pick from available inventory

Choose a number you like from the results.
3

Name it

Give it a label so you can tell your numbers apart (for example, “Main line” or “FL leads”).
The number is live for calling immediately. Texting requires A2P registration first — see Texting Compliance.

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Primary Number and Caller ID

One of your numbers is the primary. It does two jobs:
  • Default caller ID — outbound calls show this number unless you pick another
  • Inbound line — it’s the number leads call back
You can keep several numbers and choose which one to call from on any given call in the dialer — for example, a number local to whichever market you’re dialing that day.

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Reputation Protection

A number that gets flagged as “Spam Likely” kills your answer rates. Spark watches two signals on every number you own:
  • Spam-flag status — whether carriers are marking your number as spam on recipients’ phones
  • Answer-rate health — whether the number’s answer rates are degrading from heavy use
When a number is flagged or fatigued, Spark can rotate it automatically: the affected number is replaced with a fresh one so your answer rates stay healthy. Auto-rotation can be toggled in settings — leave it on if you’d rather not babysit number health yourself, or turn it off to manage replacements manually.

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Number lifecycle

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Caller ID Branding (CNAM)

Register your business name so it displays on your outbound calls instead of just a number. Registration is free and takes about 48–72 hours to propagate across carriers. A recognizable name on the caller ID is one of the cheapest answer-rate improvements available.

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Releasing a Number

Releasing a number removes it from your account. Release numbers you no longer need rather than letting them sit unused.
Releasing is permanent — once a number leaves your account, you can’t get it back. Keep your primary number unless you have a specific reason to replace it.

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FAQ

Auto-rotation replaced it. Spark detected the number was flagged by carriers or its answer rates had fatigued, and swapped in a fresh number to keep your calls getting answered. You can toggle auto-rotation off in Settings → Phone if you’d rather manage this yourself.
After CNAM registration, yes. Register your business name in Settings → Phone and it displays on outbound calls once it propagates (about 48–72 hours).
Rotation exists specifically to replace flagged numbers, so a rotated number is gone by design. The best way to keep a number long-term — especially your primary — is to keep it healthy: warm it up gradually rather than blasting high volume from day one.