How to Block Proxy Traffic on Shopify (Residential & Datacenter)

VPN traffic is the headline category, but proxy traffic is what serious fraudsters and scrapers use. Where VPNs route through known providers, proxies route through residential IPs that look indistinguishable from real users.

This guide explains the three proxy categories, how to detect each, and how to block them on Shopify.

The three proxy types

Datacenter proxies are cheap and obvious. Residential proxies are expensive ($500-$5k/mo for an account) and look like real ISP traffic — only fraudsters with budget use them.

Why proxies are worse than VPNs

A VPN connection goes to a known provider's exit node — Shieldy's database recognizes the IP and categorizes it as VPN.

A residential proxy connection looks like a normal Comcast / Verizon / BT residential IP because it is one — the network operator (Luminati, etc.) has paid hundreds of thousands of consumers to route traffic through their devices for "research."

Detection requires:

• Network ASN analysis (which corporate entity owns the IP)
• BGP routing fingerprinting
• Anomaly detection (residential IP making many requests in patterns no human would)
• Cross-store correlation (same IP hitting many stores in same niche)

Shieldy aggregates 40+ data sources for this — including IP-reputation databases that ingest abuse-reports from thousands of merchants.

Block datacenter proxies (easiest)

The lowest-effort, highest-yield proxy block:

1. Install Shieldy.
2. Open Bot Killer.
3. Toggle Block datacenter IPs to ON.
4. Save.

This blocks AWS, GCP, Azure, OVH, Hetzner, Digital Ocean, Linode, Vultr, and ~80 other major hosting providers. Almost no legitimate consumer traffic comes from these networks.

Available in the Premium plan.

Block residential proxies

Open Bot Killer → Auto-block VPN/Proxy → ON. Shieldy's "Proxy" category includes residential proxy networks alongside VPN.

The confidence threshold matters here — residential proxy detection is the hardest of the four categories with ~95 % accuracy. Set threshold:

• 0.7 (default) — balanced
• 0.6 — aggressive (more proxy blocked, slightly more false positives)
• 0.85 — conservative (some residential proxy gets through, near-zero false positives)

For most stores, default works.

Block specific proxy provider IPs

If you have identified the specific proxy provider:

1. New rule → Block → IP address.
2. Enter the provider's exit ranges (publicly documented for Luminati, Smartproxy).
3. Save.

Note: residential proxy IPs rotate. Static IP-list approach is less effective than the category detection above.

Combine with rate limiting

Most proxy traffic comes in bursts — 50+ page views in seconds, multiple variants of the same query. Enable rate limiting:

1. Open Settings → Rate limiting.
2. Set threshold: 30 requests per minute per IP.
3. Action: Challenge or Block.
4. Save.

Real human visitors rarely exceed this; scrapers always do.

Block at checkout (high-stakes orders)

If a residential proxy slips past storefront blocks, catch it at checkout:

1. Open Block checkout → Auto-block VPN/Proxy at checkout → ON.
2. The order is rejected at payment with a custom error.

Enterprise plan and above.

What about CGNAT and corporate proxies?

CGNAT (Carrier-Grade NAT) is used by mobile carriers and some ISPs to share a single IP across many real users. It can look like a proxy.

Shieldy distinguishes CGNAT from proxy via:

• ASN classification (mobile carrier vs residential vs proxy provider)
• Traffic pattern (CGNAT shows diverse user agents and behaviours; proxy shows uniformity)
• Reputation score from cross-store data

You should not block CGNAT — it would cut off significant mobile traffic.

How to spot proxy traffic in your logs

Open Shieldy's Visitor Analytics and filter:

• Risk score > 0.6
• ISP contains "AWS" / "OVH" / "Hetzner" for datacenter
• Country mismatch (IP says US, browser language says Russian)
• Time on site < 10s with 20+ page views

Sort by IP. Patterns to look for:

• Same IP, many different user agents → rotating scraper through a single proxy
• Same IP, normal user agent, many products viewed → human researcher (often a competitor)
• Multiple IPs in same /24 → proxy farm using contiguous ranges

Will blocking proxies hurt my analytics?

Net positive. Proxy traffic generates fake "visits" that:

• Dilute your real conversion rate
• Trigger false trends in your dashboards
• Cost server CPU and bandwidth
• Skew A/B test results

Filtering out proxies makes your real-customer data cleaner.

Frequently asked questions

Can I block proxy traffic without a paid app?

Shieldy's free plan covers basic IP and country blocking. VPN/proxy category detection is in the Premium plan ($4.99/mo) — usually pays for itself within the first month from reduced fraud and faster server response.

Will Apple Private Relay get blocked?

Apple Private Relay is technically a proxy but Shieldy categorizes it separately. Default config allows it (mainstream privacy-conscious consumers use it).

What about Cloudflare WARP?

Same — categorized separately and allowed by default. Toggle off if you specifically want to block it.

Are mobile hotspots flagged?

No. Mobile carrier IPs are classified as ISP / mobile, not proxy.

Can I see which orders came through proxies?

Yes. Visitor Analytics tags each order with the network category at the time of purchase.

Wrapping up

Proxy blocking is the next layer beyond VPN detection — and the one most stores skip until chargebacks force them to revisit. For the price of a single chargeback per year, you get continuous protection. Worth it.

Install Shieldy free → · See pricing →