What is Fraud Score?
A risk rating (0–100) that anti-fraud systems assign to an IP. Lower is better; seamless ISP proxies carry a zero fraud score, so they are rarely flagged.
Services such as IPQualityScore and Scamalytics score every address on reputation signals: whether the ASN belongs to hosting, whether the IP has appeared in abuse reports or blocklists, whether it has been seen behind VPN or proxy traffic, and how much automated activity has come from it recently.
Sites buy those scores and act on them before your request reaches the application. A high score can mean a CAPTCHA, a silent block, a shadow-banned account or a declined payment, with no explanation given.
There is no central registry, so the services disagree: the same address can score zero with one vendor and thirty with another on the same day. A claim of a zero fraud score is only as strong as the name of the service that produced it and the date it was checked.
Checking the score of an address before committing an account to it is cheap and worth doing. Clean ISP and residential IPs generally sit at or near zero; recycled or abused addresses do not, and no amount of careful request pacing fixes a bad reputation.
Related terms
ISP Proxy
A static proxy hosted in a data center but registered under a residential ISP, combining datacenter speed with residential trust and a zero fraud score. Also called a static residential proxy.
CAPTCHA
A challenge designed to tell humans from bots. Clean residential IPs and good request hygiene reduce how often CAPTCHAs are triggered.
WAF (Web Application Firewall)
A security layer that filters and blocks suspicious web traffic. Residential proxies and realistic request patterns help pass WAF checks.
Multi-Accounting
Operating several accounts on a platform, with each account isolated on its own dedicated IP to prevent linking and bans.