Number Health Management
Run outbound campaigns3 min readUpdated 2026-03-14
Number health determines whether your outbound calls get answered or flagged as spam. Carriers and call-blocking apps score phone numbers based on call patterns. If your numbers are flagged, prospects never see your calls. Number Health Management helps you monitor and fix this.
Available on: All Sales Dialer plans.
Why Number Health Matters
- Spam/Scam Likely labels suppress your caller ID on the prospect's phone.
- Flagged numbers can reduce answer rates by 50% or more.
- Carriers may block flagged numbers entirely, so the phone never rings.
Monitoring Number Health
- Go to Sales Dialer > Settings > Number Health.
- View a dashboard showing all your outbound numbers with their current health status.
| Status | Meaning |
|---|---|
| Healthy | No spam flags detected. Safe to use. |
| At Risk | Minor flags detected on one or more carriers. Monitor closely. |
| Flagged | Marked as spam/scam by one or more carriers or apps. Remediate immediately. |
| Blocked | Calls are being blocked by carriers. Remove from active campaigns. |
What Causes Numbers to Get Flagged
| Cause | How to avoid |
|---|---|
| High call volume from one number | Rotate across multiple numbers. |
| Low answer rate | Improve list quality, use Local Presence. |
| Short call duration | Indicates robocalling patterns. Ensure live conversations. |
| Consumer complaints | Respect DNC requests, avoid overcalling. |
| No inbound usage | Numbers that only make outbound calls look suspicious. Accept inbound calls on your dialer numbers. |
Remediation Steps
If a number is flagged or at risk:
- Remove from active campaigns immediately to prevent further damage.
- Register with carrier verification programs:
- Register your business and numbers with carriers (T-Mobile/Sprint, AT&T, Verizon) through their respective spam mitigation programs.
- Dispute spam labels through call-blocking apps (Hiya, Nomorobo, TNS) by submitting false-positive reports.
- Rest the number — stop using it for outbound calls for 2–4 weeks.
- Warm the number before reuse — start with low volume and increase gradually.
Prevention Best Practices
- Rotate numbers: Use multiple outbound numbers and rotate them across campaigns. See Alternate Number Dialing.
- Cap daily volume per number: Limit each number to 100–150 outbound calls per day.
- Use Local Presence: Distributes call volume across many numbers naturally.
- Accept inbound calls on your dialer numbers to establish two-way usage patterns.
- Monitor weekly: Check number health dashboards at least once a week. Catch "At Risk" numbers before they become "Flagged."
- Register for STIR/SHAKEN: Ensure your numbers are verified under the STIR/SHAKEN framework to improve trust scores with carriers.
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