Denmark has blocked Polymarket among 98 gambling websites after the Frederiksberg Court ruled that the sites offered gambling to Danish users without licences. The ruling was issued on 8 July, and Polymarket has appealed; internet providers are enforcing the restriction through DNS blocking.
DNS blocking restricts Polymarket’s access to Danish users while its appeal proceeds.
| Date | Company | Amount | Story | Appeal status |
|---|---|---|---|---|
| Polymarket | Not stated | Denmark blocks 98 gambling websites including Polymarket | Not stated | |
| Polymarket | Not stated | Danish Gambling Authority secures blocks against 98 gambling websites | Not stated | |
| Polymarket | Not stated | Frederiksberg court authorises Denmark block on 98 unlicensed gambling sites | Not stated | |
| Not named | Not stated | Spillemyndigheden secures court approval to block 98 gambling sites in Denmark | Not stated | |
| Not named | DKK 4,310,000,000 | Spillemyndigheden blocks 334 illegal gambling websites in Denmark in 2025 | Not stated |
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Norway’s gambling regulator has notified 62 companies that their websites could face blocking in the country. The report names Kalshi and Polymarket among the targets.
The Ohio Casino Control Commission issued demands on 2 October for prediction market operators and brokers to withdraw sports contracts from Ohio. The outlet reported that recipients must provide written confirmation of compliance by 16 October, following a federal appeals ruling allowing Ohio to apply its gambling laws to these contracts.
The Ohio Casino Control Commission sent cease-and-desist letters on 2 October to 10 prediction market operators and brokers, requiring each to confirm in writing by 16 October that it has stopped offering sports event contracts to people in Ohio. The recipients are Coinbase, Gemini, Titan, Moomoo Financial, Novig, Plus500US, Polymarket, Prophet X, Robinhood Derivatives, Underdog Predict and Webull Financial. Kalshi, which contested the commission in court, did not receive a new letter; it already faces a proposed $5m fine from the commission.
The Czech Ministry of Finance added Kalshi to its list of unauthorised gambling providers on 30 September, according to a report. Czech law requires internet service providers to block listed platforms within 15 days, meaning access to Kalshi is due to be blocked from 15 October 2026.
New York has sued Polymarket over alleged illegal gambling. Polymarket has filed a lawsuit in response, following New York’s earlier legal action against Kalshi.
New York filed an illegal gambling lawsuit against Polymarket, the state's complaint alleging that the company runs a gambling business without a New York gaming license. Polymarket's response was to shift the matter into federal court, and the company brought a separate action of its own against New York gaming officials.
New York Attorney General Letitia James and Governor Kathy Hochul sued QCX LLC, which operates as Polymarket US, alleging that it runs illegal gambling in the state. The state is seeking to stop the company operating without a gambling licence, recover profits it considers unlawful, compensate customers and impose fines of three times those profits.