Real SIM Still Shows a Fraud Score: Why the Checker Is Not Wrong
Published
A customer runs a brand-new Real US Proxies line through a fraud checker, sees a score of thirty and a proxy flag, and writes to ask whether the SIM is really a SIM. It is, and the checker is not wrong either; it is answering a different question from the one the customer asked. A fraud score describes the public address and the crowd of real subscribers who have shared it, not the SIM behind it. This guide explains what the score is built from, why carrier addresses collect history, what a proxy flag on a cellular range means, which fields on the same page actually matter for your work, and what to do when a score is high.
What goes into a score
Fraud scorers combine three kinds of evidence. Registry facts: who owns the block, whether it is hosting, residential or cellular. Reports: abuse complaints, bot traffic, chargebacks and failed logins that the scorer's customers have attributed to the address. Heuristics: a mismatch between the address's location and a browser's time zone, or many accounts seen from one address in a short period. The output is a number, often 0 to 100, with labels such as proxy, VPN, bot, recent abuse and mobile. The number predicts the address; it does not judge you.
Why a real SIM inherits history
Carriers place hundreds or thousands of phones behind each public address through carrier-grade NAT. Every one of those subscribers' actions attaches to the shared address: someone's disputed payment, someone's scraper, someone's dozen sign-ups. By the time a Real US Proxies SIM receives an address from the gateway, that address has a biography written by strangers. The score reflects it. This is the same for every phone on the carrier, including the one in your pocket if you are in the United States.
Why a zero would worry us
An address with no history is an address nobody has been using. Fresh datacenter ranges show zeros; busy carrier ranges rarely do. When a customer sends us a screenshot of a competitor's proxy with a perfect zero and a residential label, our first question is whether anyone lives behind it. A modest non-zero score next to a cellular connection type is what a real phone network looks like from the outside.
Proxy flags on cellular ranges
Some scorers mark entire carrier ranges as proxy because mobile proxies are commonly sold on them; others flag an address that has appeared in a proxy list at any point. A proxy flag beside a cellular connection type is therefore ordinary and does not mean your line was identified. Platforms almost never act on it, because blocking a carrier address blocks the real subscribers behind it. The flag that matters more is recent abuse, which some sites challenge on; even then the challenge applies to the public address, and a rotation moves you to another address from the same pool.
The fields to read instead
Connection type: cellular or mobile means the websites that use this scorer will treat you as a phone. ISP and ASN: the carrier's name and number confirm the SIM is what it claims. Country and region: the United States and the SIM's state. These three are the proof. The score and the flags are weather, changing through the day as reports arrive and expire, and shared with everyone on the gateway.
When the score is high and the job is sensitive
Rotate once and check again; the new address has a different biography. Make sure the browser profile's time zone and language match the SIM's city, since a mismatch is a heuristic the scorer itself uses. Keep the request pace human. If one city's gateway stays noisy across many rotations, move the SIM to another city from the dashboard for free. We cannot measure or change a third party's score, and no honest seller can; what we guarantee is the carrier, the city and the fact that the SIM is yours alone.
- Read connection type, ISP and ASN first; if they show a US carrier and cellular, the SIM is real.
- Treat a proxy or VPN flag on a cellular address as inherited unless a platform is actively challenging you.
- If the score is high, rotate once and look the new address up.
- Match the profile's time zone and language to the SIM's city.
- If a city stays noisy over many rotations, move the SIM to another city, free.
Frequently asked
Does a fraud score mean my SIM is fake?
No. The score describes the public address and the subscribers who shared it. The ISP, ASN and connection type fields describe the SIM, and they will show a US carrier and cellular.
Why did a new line show a high score?
The address it received had been used by other subscribers before. A rotation usually brings an address with a quieter history.
Will a proxy flag get my account banned?
Rarely. Platforms cannot block cellular ranges without blocking real phones. Behaviour, fingerprint and time zone matter far more.
Can you sell me a line with a zero score?
No, and you should not want one. A zero on a carrier address would mean nobody uses the gateway, which is not how a real network looks.