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What Is an IP Fraud Score?

An IP fraud score is a number a risk vendor assigns to an IP address to estimate how likely traffic from it is to be abusive. Most use a 0 to 100 scale where higher means riskier, and websites use the score to decide whether to allow, challenge or block a request.

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how it works

How a fraud score works

When a checkout, signup or login form receives a request, the site can send the visitor's IP to a risk API and get a score back in milliseconds. The vendor computes it from signals it collects across many customer sites:

Fraud score: key points
  • Connection type: whether the IP belongs to a consumer ISP, a mobile carrier or a hosting network, and whether it is detected as a VPN, a Tor exit or a public proxy.
  • Recent abuse: fraud reports, chargebacks, spam and bot activity tied to the IP, weighted towards the last few days and weeks.
  • Velocity: how many distinct users, accounts or transactions the IP has been seen with recently.
  • Blocklist entries and open ports that suggest a compromised or misconfigured host.
  • 1

    0-25

    Typical reading
    Low risk
    What sites tend to do
    Allow normally
  • 2

    25-75

    Typical reading
    Some risk signals
    What sites tend to do
    Allow, sometimes with a CAPTCHA or extra check
  • 3

    75-100

    Typical reading
    High risk
    What sites tend to do
    Challenge, hold for review or block

Bands differ by vendor and each site sets its own thresholds, so read the table as a rough guide, not a standard.

why it matters

Why the fraud score matters for proxy users

A fraud score is one number, but checkout, signup and ad platforms often act on it before any other check runs. Because each vendor sees different data, the same IP can score near 0 with one and much higher with another, and a score can move within days as new reports arrive. It is a snapshot, not a permanent property of the IP.

The score is narrower than IP reputation, which covers everything a site knows about an address. A clean score helps, but it does not offset a request rate that trips a site's own limits. To check a proxy IP:

CleanProxies static ISP proxies are dedicated US carrier IPs with a 0 fraud score, and because they are never shared, no other customer's traffic adds to it.

Fraud score: what it means for you
  • Look the IP up with two or three risk vendors and compare the results instead of trusting one score.
  • Check the network side with the IP lookup tool and blocklists with the IP blacklist checker.
  • Re-check after a few weeks of use, because your own traffic moves the score too.

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Guides from the blog

Setup guides and best practices from the CleanProxies blog.

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Related terms

Terms that come up alongside Fraud score.

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Fraud score FAQs

Straight answers about Fraud score.

On the common 0 to 100 scale, lower is better, and scores near 0 are treated as clean. Each vendor and site sets its own thresholds, so check what the platform you care about uses.

Got more questions?All FAQs