Decline Diagnosis in Carding: The Complete IPQS and Anti-Fraud Detection Guide

[Investor]

A comprehensive, practical guide to diagnosing why your carding attempts are failing, how to use IPQualityScore and other tools to identify issues with IP, email, phone, and other factors, and how to improve your success rate.

Introduction: Why Orders Get Canceled​

Bro, you know the situation: payment goes through, order is placed, but within an hour you get a refund email (or worse — just silence and cancellation). All merchants are terrified of losing money, and any flag from anti-fraud gives them a signal to make you pay via PayPal or cancel the order.

The key question: How do you know what's triggering the red flags?

The answer is simple: you need to diagnose every factor that the anti-fraud system checks. Modern anti-fraud systems (Stripe Radar, NoFraud, Kount, Forter, Riskified, Sift) evaluate dozens of parameters in real-time. Understanding what causes declines is the key to improving your success rate.

What Anti-Fraud Systems Check​

Factor	What It Checks	Weight	How It Affects You
IP Address	Reputation, proxy detection, bots, blacklists	Critical	Instant decline if proxy detected
Email	Age, data breaches, activity, reputation	High	Decline or manual review
Phone Number	VOIP detection, virtual, activity	High	Decline if VOIP detected
Card BIN	Bank, country, type, Non-VBV status	High	Amount limits or decline
Billing Address	ZIP match, AVS response	Medium	Mismatch = decline
Device Fingerprint	Canvas, WebGL, WebRTC, fonts	High	Flag if spoofing detected
Behavior	Time on page, mouse movements	Medium	Flag if bot-like behavior
Purchase History	Previous refunds from this card	High	Decline if bad history

Tool #1: IPQS — The Most Powerful Diagnostic Tool​

IPQS (IPQualityScore) is one of the most popular fraud detection services in the US and Europe. Why? Because most stores run on Shopify, and Shopify offers store owners a large catalog of apps — including IPQS.

How to Get Access​

1. Go to https://www.ipqualityscore.com
2. Register via Google or any other convenient method
3. Done!

Bonus: The service gives 1000 free queries per month. Enough to get started. If you need more, you can create duplicate accounts (just use a different browser and IP).

What IPQS Checks​

Check Type	What It Provides	Cost
IP Address	Fraud score, proxy flag, bots, blacklists	Free (1000/month)
Email	Reputation, breaches, age, activity	Free (1000/month)
Phone Number	VOIP flag, risk, activity	Free (1000/month)
BIN	Bank, country, type	Free

IP Address Check​

Everyone says: "Don't even try without a clean IP." Why? Because IP is the first thing checked.

Scamalytics vs IPQS Comparison​

Many people check fraud score via Scamalytics. Let's see the difference.

Proxy: Taken from xx proxy (you can sort socks by fraud score via both Scamalytics and IPQS). Testing everything from New York.

Scamalytics Result:​

Looks clean, right? Now IPQS:

99 score with flags indicating it's a proxy, bots were using it, etc. This sock goes straight to the trash.

Important: This isn't an isolated case. Consistently, each sock that passes Scamalytics as "clean and fluffy" gets flagged by IPQS.

Why? Scamalytics isn't very progressive — either their databases are old, or they just calculate scores differently. They also allow users to add scammers and their IPs to their databases. AI? No, haven't heard of it.

What to Do with a Bad IP​

Action	Why
Change the proxy	High fraud score = decline
Check on IPQS before use	Saves time and cards
Use residential proxies	Less likely to be blacklisted
Avoid datacenter proxies	Easily detected

Email Check​

Checking email isn't everyone's priority, since they're usually made for the cardholder or purchased. But this is a big mistake.

APIVoid vs IPQS Comparison​

The service was chosen from Google's top results.

APIVoid:
Trust 100/100. Probably a 35-year-old US resident... (This email has seen more refunds than regular mail.)

IPQS:
85 score. This is definitely either a 35-year-old US resident or someone trying to run dead cards through every shop.

What to Do with a Bad Email​

Action	Why
Change the email	Low reputation = decline
Use Gmail/Outlook with history	Higher trust
Check email for breaches	If breached, it's flagged
Create and warm up email in advance	Older emails = more trust

Phone Number Check​

Now everyone tenses up, especially those hitting drops. This is also an ideal way to check your drop from the panel — are they really clean? Or is your buyer trying to fool you?

Of course, not everyone provides a phone number, but it's worth checking. Let's take a forwarding number.

Result: Immediately clear why refunds and other problems were happening.

What to Do with a Bad Phone​

Action	Why
Change the number	VOIP flag = decline
Use real numbers	Higher trust
Check before use	Saves time

Practical Experience​

I started using this tool heavily two months ago and found the reason for my refunds and other problems. Clean email + clean address + clean socks = success.

Everyone should try it, then ask themselves: "Did I notice a difference in performance?"

If IPQS showed that you shouldn't try with this data, then other anti-fraud systems (NoFraud, Stripe Radar, etc.) will likely show the same.

Full Diagnostic Table​

Factor	Where to Check	What to Look For	What to Do if Problem
IP	IPQS, Scamalytics	Fraud score > 25, proxy flag	Change proxy
Email	IPQS, Have I Been Pwned	Breaches, score < 80	Change email
Phone	IPQS	VOIP flag, risk > 50	Change number
BIN	binx.vip, binbase.com, bins.pro	Country, bank, type	Choose different BIN
Billing	IPQS (AVS)	ZIP mismatch	Fix address

Pre-Carding Full Checklist​

markdown:

[ ] IP checked on IPQS (score < 25, no proxy flag)
[ ] Email checked on IPQS (score > 80, no breaches)
[ ] Phone checked on IPQS (no VOIP flag)
[ ] BIN checked (bank, country, type)
[ ] Anti-detect configured (Canvas, WebGL, WebRTC)
[ ] Proxy matches card region
[ ] Warm-up completed (15-30 minutes)
[ ] Billing address matches card ZIP
[ ] Device fingerprint checked (BrowserLeaks)

Final Conclusion​

Bro, diagnosis is the key to success. If you don't know what's causing the decline, you're flying blind. Use IPQS to check IP, email, and phone. Compare with other services. Analyze the results.

P.S. For successful carding, don't forget to use:

• Clean anti-detect browsers
• Quality material for work
• Residential proxies matching cardholder
• Store warm-up
• And other standard "little things" of carding

This is how you check the key factors that determine your success.

The Golden Rule: Clean email + clean address + clean socks = success. Any compromising factor = red flag for anti-fraud.

Good luck, brother. If you need anything — write.