Phone Validation for Insurance Quote Forms: Reducing Fraud and Improving Contact Rates

Why Phone Validation Matters for Insurance Quote Forms

Insurance quote forms sit at the critical intersection of lead generation and risk assessment. A phone number submitted through a quote form isn’t just contact information—it’s often the primary channel for follow-up, the data point that determines whether you’re reaching a legitimate prospect or wasting time on a fraudulent submission, and a potential TCPA liability if handled incorrectly.

Real-time phone validation during the quote process addresses three core problems: filtering out fraudulent or low-quality submissions before they enter your CRM, ensuring you can actually reach the prospect through their preferred channel, and maintaining compliance with telecommunications regulations.

Common Problems with Unvalidated Phone Data

Insurance quote forms attract both legitimate prospects and problematic submissions. Without validation, several issues emerge:

Fraudulent submissions using disconnected numbers, VoIP lines tied to synthetic identities, or numbers that rotate through lead generation networks. These waste agent time and skew conversion metrics.

Wrong contact methods happen when prospects provide landline numbers but expect SMS communication, or when agents attempt to text mobile numbers that can’t receive messages. This creates friction in the follow-up process and reduces conversion rates.

Compliance risks arise when calling numbers on litigator lists or contacting consumers who’ve explicitly opted out. A single TCPA violation can cost $500-$1,500 per incident.

Deactivated numbers from prospects who copy-paste outdated information from browser autofill or deliberately provide old contact information to avoid follow-up calls.

Validating at Quote Submission

The optimal validation point is during form submission, before the lead enters your system. A real-time API call to CheckThatPhone takes 1-3 seconds and returns comprehensive data about the number.

Here’s a basic validation request:

curl -X POST https://api.checkthatphone.com/v1/lookup \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "phoneNumber": "+15551234567",
    "litigatorFilter": true,
    "landlineSmsLookup": true
  }'

The response includes several fields relevant to insurance quote validation:

deliverable indicates whether the number is currently active
deactivationDate shows when the line was disconnected (if applicable)
dipCarrier, dipCarrierType, and dipCarrierSubType identify the current carrier and line characteristics
nanpType classifies the line as mobile, landline, or not-mobile (VoIP, toll-free, etc.)
litigator, litigator_type, and litigator_name flag known TCPA litigators when litigatorFilter: true is set

Line Type Detection for Follow-Up Strategy

Insurance sales processes often involve multiple touchpoints across voice and SMS channels. The nanpType field tells you whether you’re dealing with a mobile or landline number, but that’s only part of the picture.

Many landlines now support SMS through carrier services. By including landlineSmsLookup: true in your request, you’ll receive:

dipMessagingLookup confirming the lookup was performed
dipMessagingEnabled indicating whether the landline can receive SMS
dipMessagingProvider identifying the service provider

This data lets you route leads appropriately. A landline without SMS capability requires voice-only outreach. A mobile number or SMS-enabled landline can receive automated quote confirmations, policy document links, and appointment reminders via text.

Identifying High-Risk Submissions

Certain number characteristics correlate with fraudulent quote submissions:

VoIP and prepaid lines (identifiable through dipCarrierType and dipCarrierSubType) are disproportionately associated with synthetic identities and lead fraud. While legitimate prospects do use these services, they warrant additional verification steps before assigning to agents.

Recently ported numbers (dipPorted: true) aren’t necessarily suspicious, but when combined with other risk signals—mismatched geographic data, for example—they may indicate number manipulation.

Geographic inconsistencies emerge when geoState doesn’t align with the address provided in the quote form. While people do move and keep their numbers, significant mismatches deserve a second look.

TCPA Compliance Through Litigator Scrubbing

Professional plaintiffs and serial litigators submit insurance quotes specifically to build TCPA violation cases. The litigatorFilter add-on checks numbers against known litigator databases.

When you include litigatorFilter: true in your request, the response includes:

litigator (boolean) indicating whether the number appears on litigator lists
litigator_type classifying the nature of the listing
litigator_name identifying the associated individual or entity

Quote forms flagged for litigator matches should either be rejected outright or routed to a manual review process with explicit written consent requirements before any contact attempt. The cost of validation is trivial compared to TCPA settlement exposure.

For more detail on implementing litigator screening, see our TCPA Litigator Scrub use case.

Deliverability Checks and Data Hygiene

The deliverable flag and associated fields (blackList, reason, action) indicate whether the number can receive calls. Common scenarios:

Disconnected numbers return deliverable: false with a deactivationDate
Numbers on carrier blacklists are flagged through blackList: true
The reason field provides human-readable context
The action field suggests how to handle the number (accept, reject, flag for review)

Rejecting undeliverable numbers at submission prevents them from contaminating your CRM and inflating your lead acquisition costs. If a prospect can’t provide a working phone number, the quote likely isn’t actionable.

Implementation Considerations

Phone validation adds latency to form submission. Most implementations use these approaches:

Synchronous validation calls the API during form submission and blocks until results return. This provides immediate feedback but requires handling timeout scenarios gracefully.

Asynchronous validation accepts the form submission, then validates in the background before routing to agents. This improves user experience but delays fraud detection.

Conditional validation applies full validation only when other risk signals are present (mismatched IP geolocation, new email domain, etc.), using basic validation for low-risk submissions.

Pricing and rate limits for your use case are detailed on our pricing page, and complete API documentation is available in our docs.

Measuring Impact

Track these metrics before and after implementing phone validation:

Contact rate: percentage of leads where agents successfully make contact
Cost per contacted lead: total acquisition and agent costs divided by successful contacts
Fraud rate: percentage of quotes identified as fraudulent after payout
Compliance incidents: TCPA complaints or violations per thousand contacts

Most insurance carriers see contact rates improve 15-25% and fraud rates drop 40-60% within the first quarter of implementation. The compliance benefit is harder to quantify but potentially worth far more than the operational improvements.

For broader applications of phone validation in customer onboarding, see our guide on KYC phone verification.