France Blocks Polymarket via ISP Order After Two-Year Probe Finds Unauthorized Gambling and No KYC

Key Takeaways

• ISP Block Ordered: France’s ANJ instructed internet service providers to block Polymarket on July 17 after a nearly two-year investigation.
• Traffic Numbers: 205,057 unique visitors from France made 578,751 visits to the site in June alone.
• Core Violations Cited: The regulator flagged absent KYC systems plus rigged bets including hacked weather sensors investigated on May 4, 2026.
• Legal Framework: Prediction markets sit alongside online casinos and peer-to-peer exchanges as prohibited in France.

205,057 unique visitors from France hit Polymarket in June. Those users generated 578,751 visits. Last Friday (July 17), the National Gambling Authority (ANJ) ordered internet service providers to block the platform entirely.

The move follows a nearly two-year investigation that classified the decentralized crypto prediction market as illegal gambling. According to reporting by Casino.org News the ANJ concluded Polymarket operates without authorization in the country.

Traffic Data Drove ANJ Enforcement on July 17

Escalating traffic from within France appeared to be a key trigger. The site’s homepage displays real-time odds for events open to betting. That homepage acts as a major promotion channel for unauthorized offerings.

Advertising for unauthorized betting sites is a criminal offense under French law. The ANJ exercised authority it has held since March 2022 to instruct ISPs on blocks for illegal gambling. The independent regulator reports directly to the French Parliament.

This level of visitation left regulators little choice. The data showed clear demand inside a prohibited category.

Probe Exposed KYC Failures and Integrity Risks

The ANJ questioned whether Polymarket contracts avoid insider trading influence. As a decentralized crypto-based exchange it also lacks appropriate customer verification tools.

The ANJ statement read: “Some of the bets offered on this platform appeared to be rigged: for example, bets on the weather revealed that weather sensors may have been hacked. An investigation into this matter was launched on May 4, 2026, by the cybercrime unit of the Paris Public Prosecutor’s Office and entrusted to the Office for Combating Cybercrime. This case revealed the absence, on the Polymarket platforms available to French and European users, of a user identification system to verify their integrity (known as KYC, or ‘Know Your Customer’).”

These gaps matter. Without KYC the platform cannot confirm user integrity. That absence creates direct regulatory exposure.

France Draws a Strict Line on Permitted Online Gambling

France authorizes sports betting, online poker, and parimutuel wagering on horse racing through licensed regulated platforms. Those formats operate inside clear boundaries.

Prediction markets, online casino games, and peer-to-peer betting exchanges stay prohibited. The ANJ exists to regulate the legal channels and combat everything outside them.

The distinction is not new. Yet Polymarket’s model sits squarely on the wrong side of it.

Most Prediction Platforms Already Self-Restrict in France

Many other prominent prediction market platforms voluntarily restricted French access. Polymarket chose not to comply with the ANJ conclusion that its contracts constitute illegal gambling.

That decision amplified the regulator’s concerns. The combination of rising visits, no KYC, and public real-time odds created an unavoidable enforcement target.

Other operators read the environment differently. They adjusted ahead of formal orders.

Where the Risk Lies for Decentralized Models

The French action exposes a core limitation. Decentralized crypto exchanges can generate real user traction yet lack the controls regulators demand. Traffic alone does not create legitimacy.

From the supplier side this outcome was predictable. European regulated markets price in compliance costs early. Platforms that treat KYC as optional invite exactly these blocks. The May 4, 2026 cybercrime probe only accelerated what the visitor data already signaled.

The coverage captures the block and the quoted concerns well. What it underemphasizes is the operational tax this places on licensed French operators. They compete inside narrow permitted lanes while unauthorized traffic finds workarounds until the ISP wall goes up. That asymmetry distorts market signals operators rely on.

Lessons for Cross-Border Prediction Market Strategy

This ISP order reinforces that decentralized structures do not override local gambling definitions. Platforms must treat each jurisdiction’s rules as binding or accept outright exclusion. The 578,751 June visits did not create negotiating room. They triggered the block.

Operators and builders should map KYC and integrity requirements before scaling traffic. France shows the cost of getting that sequence wrong. Future moves by similar regulators will likely follow the same traffic-plus-investigation pattern. Adjust early or prepare for the wall.