What Number Verifier does

Number Verifier, operated by Verification Technologies, LLC (Henderson, NV), is a caller ID reputation monitoring platform serving US-based businesses with outbound calling operations. Its core product checks phone numbers against the spam-flagging systems deployed by AT&T, Verizon, and T-Mobile, allowing customers to detect labeling issues and remediate reputation before outbound answer rates deteriorate. The platform also maintains an FCC-aligned Reassigned Numbers Database (RND) with 377M+ disconnected records growing by 23M+ per month, offers STIR/SHAKEN attestation monitoring aligned with TCPA compliance requirements, and exposes a Verify API for programmatic identity verification. The architecture combines a web console, REST API, and webhook delivery, enabling both self-serve and embedded usage.

The business model is subscription-based with credit consumption across Starter, Professional, and Elite tiers, plus custom Enterprise pricing; agreements are annual but billed monthly. Go-to-market is hybrid: a product-led free trial (no credit card) drives self-serve acquisition, while sales-led motions capture larger TCPA-regulated and enterprise accounts. Target customer segments include TCPA-regulated businesses, lead generation operations, and verticals with heavy outbound calling — notably timeshare (e.g., Xtimeshares), insurance (e.g., Reliasure Insurance Services), and funding (e.g., RatePlus Funding). The platform reports 1,500+ customers, a 4.9/5 rating across 458 reviews, and 1.174B+ cumulative TN queries processed. The company operates as a privately held, bootstrapped LLC with no disclosed funding rounds.

Beyond monitoring, Number Verifier has expanded into adjacent carrier services through its Device Cloud product line (Messaging, Voice, Numbers), positioning the company to capture revenue beyond analytics into execution infrastructure for outbound telephony.

Name

Number Verifier

Legal name

Verification Technologies, LLC

Website

https://numberverifier.com

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

Number Verifier is a US-based caller ID reputation monitoring platform serving outbound-calling businesses across timeshare, insurance, funding, and lead generation. It checks numbers across AT&T, Verizon, and T-Mobile, maintains an FCC-aligned Reassigned Numbers Database, and offers STIR/SHAKEN attestation monitoring and a Verify API on subscription tiers.

Ownership category

akta.pro rank

Product category

Caller ID Reputation Monitoring

SIC

Telephone Communications (No Radiotelephone) (4813)

akta.pro primary industry

Voice Security, Fraud Prevention & Authentication (STIR/SHAKEN, anti-spam) (HDAIAHAL)

Keywords

• Caller ID monitoring
• Spam likely detection
• TCPA compliance
• STIR/SHAKEN attestation
• Reassigned numbers database

Headquarters

HQ city

Dover

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations

Revenue model

1. Credit-based Subscription: Credits are purchased in packaged plans (Starter, Professional, or Elite). Credits are consumed each time a phone number is checked or monitored. Auto Reload feature automatically purchases additional credits when account falls below threshold. Purchased credits expire after one year.
2. Annual Subscription with Monthly Billing: All plans require yearly agreement billed monthly. Customers can upgrade or downgrade at any time without restarting their agreement.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels3 records

Core offering

Number Verifier operates a real-time caller ID reputation monitoring platform that continuously checks whether business phone numbers are labeled Spam Likely or Scam Likely across major U.S. carriers (AT&T, Verizon, T-Mobile) and call-blocking apps, sending alerts when flag status changes. The platform also delivers Reassigned Numbers Database (RND) queries for TCPA safe harbor compliance, STIR/SHAKEN attestation monitoring, and supporting carrier service APIs for messaging, voice, and identity verification.

Product overview

Number Verifier is a caller ID reputation monitoring platform that helps businesses ensure their phone calls get answered by preventing 'Spam Likely' or 'Scam Likely' labels. The core product is the Caller ID Reputation Monitoring service, which works alongside the STIR/SHAKEN & Attestation framework for call authentication and the Reassigned Numbers Database (RND) for identifying disconnected or reassigned numbers. The Device Cloud platform provides complementary carrier services including Messaging (programmable MMS & SMS), Voice calling integration, and Numbers management. The Verify API offers identity verification capabilities to boost conversions.

Differentiator

Problem solved

Functional benefit

Products and services

• Caller ID Reputation Monitoring

Quantifiable outcome

• Increase answer rates by 30-40% by preventing Spam Likely labels
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators6 records

Recent moves4 records

Expansion highlights5 records

Market position

Competitive moat4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/number-verifier

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Number Verifier