• HIGH RISK
  • VALIDATED
  • INACTIVE
  • MANUAL

How to detect fraudulent phone numbers with your AI

Connect TeleSign to your AI client to start analyzing phone numbers. Your agent handles the validation and risk scoring for you.

Ask AI about this page

Short answer

How can I use AI to spot fake phone numbers?

Your AI uses TeleSign to check if a number is active and how much risk it carries. It also identifies the phone type to help you spot suspicious patterns. You'll get a clear breakdown of which numbers are safe and which are risky.

The results.

Where your data lands.

Your AI categorizes every number based on the TeleSign data it pulls.

HIGH RISK

Flag for review

The AI finds numbers with high fraud scores. You'll see these flagged so you can decide whether to block them.

VALIDATED

Safe to use

Numbers that pass risk and status checks are marked as low risk. These move through your process without issues.

INACTIVE

Dead lines

The AI detects numbers that have been deactivated. This keeps you from trying to reach non-existent contacts.

MANUAL

Needs a human

If a number has an unusual type or risk profile, the AI hands it to you for a final decision.

The workflow

What your AI does when a number arrives.

Your agent acts as a gatekeeper, running a sequence of checks to filter out bad actors.

  1. Assess risk

    The AI looks at the fraud probability of the number to see if it matches known bad patterns.

    score_phone

  2. Verify status

    It checks if the line is still active or if it has been shut down.

    check_deactivation

  3. Identify hardware

    The AI determines if the user is on a mobile device or using a VoIP line.

    get_phone_type

  4. Final triage

    The agent combines all the data to tell you which numbers are safe and which are suspicious.

    score_phoneget_phone_type

Try it

Copy these to start.

Use these prompts to trigger the TeleSign tools.

Starting points

These are opening lines. Replace the specific contact lists or sheets with your own data.

TeleSign Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_oiuYgXjrVlaOSsTSlNFA3oyRAAL75ekhSY2WHRyf/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — TeleSign capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "telesign-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_oiuYgXjrVlaOSsTSlNFA3oyRAAL75ekhSY2WHRyf/mcp"
    }
  }
}
Copy into chat04

  • Check the risk score for the phone numbers in this Google Sheet.

  • Run a fraud check on the contact list I just uploaded.

  • Analyze the phone numbers in my CRM and tell me which ones are deactivated.

  • Look at these new sign-up numbers and flag any that are using VoIP lines.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect TeleSign once, then ask.

You only need to link your TeleSign account once. Your credentials stay encrypted, and you can immediately start asking your AI to run checks.

Connect TeleSign to your AI

FAQ

How this task behaves.

  • 01

    Can the AI block phone numbers automatically?

    No. The AI identifies and flags the numbers, but you must decide whether to block them in your own system.

  • 02

    Does the AI update my database directly?

    No. The AI reads your data and provides the analysis, but it does not write changes back to your external databases.

  • 03

    How does it know if a number is a scam?

    It uses the score_phone tool to evaluate the risk level based on TeleSign's fraud intelligence.

  • 04

    Can it tell the difference between a cell phone and a landline?

    Yes, it uses the get_phone_type tool to distinguish between different types of phone lines.

  • 05

    What happens if a number is no longer in service?

    The AI uses the check_deactivation tool to confirm if the number is still active.

  • More questions about TeleSign? See everything the TeleSign Connector can do

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