Geo-blocking is the practice of restricting access to a website, app or online service based on where the user is located. The provider estimates location from technical signals, chiefly the user's IP address and, where required, device geolocation, and then blocks, limits or redirects users in certain countries or regions. Geo-blocking is used by gambling operators, crypto platforms and financial firms to stay within the markets they are licensed for and to comply with sanctions, and by media and e-commerce businesses for content rights and pricing.
The term covers two different uses. As a compliance control, geo-blocking keeps a business inside its licence and outside sanctioned territories. As a commercial practice, it can discriminate between customers by nationality or residence, which the European Union restricts for most online sales. Governments also impose a related form, ordering internet service providers to block access to unlicensed sites in their territory.
Geo-blocking in plain terms
Geo-blocking is a doorman who checks where visitors come from before letting them in. He looks at the postmark on their envelope (the IP address), sometimes asks to see where their phone says they are, and compares that with the address on their ID and their bank card.
The doorman is not perfect. People can borrow someone else's envelope, for example by using a VPN that makes them appear to be in another country. That is why careful businesses combine several checks rather than relying on just one.
How geo-blocking works
Providers combine several location signals:
- IP geolocation. Commercial databases map IP addresses to countries and regions; this is the most common and cheapest check.
- VPN and proxy detection. Lists of data-centre, VPN, Tor and proxy addresses help flag users disguising their location.
- Device geolocation. GPS, Wi-Fi and mobile network data give a more precise position, and US state-licensed online gambling requires it to confirm the player is inside the state.
- Identity and payment data. The address verified during know your customer (KYC) checks, the phone number and the issuing country of the card (from its BIN) are compared with the network location.
Mismatches, such as a sanctioned-country IP address on an account verified elsewhere, are routed to transaction monitoring or manual review. Location data is personal data, so firms in Europe process it under the General Data Protection Regulation (GDPR) and wider data privacy rules.
Geo-blocking in gambling
Most large gambling markets require a local licence to serve their residents, so operators geo-block countries where they lack one. A gambling licence from the UK Gambling Commission (UKGC) covers Great Britain only, and a Malta Gaming Authority (MGA) licence does not authorise play in EU states that run their own regimes. Operators relying on an offshore gaming license, for example from the Curaçao Gaming Authority (CGA), have often been criticised for weak geo-blocking of markets where they are not licensed.
National regulators enforce from the other side. Many publish blacklists of unlicensed online gambling domains and order internet service providers to block them, ask app stores to remove apps, and instruct banks and payment firms to refuse transfers to listed operators. Payment blocking often matters more than website blocking: card schemes expect acquirers to block gambling transactions with the relevant merchant category code (MCC) from markets where the merchant is not licensed, a key part of gaming payments compliance for online casinos and sports betting sites.
Geo-blocking and sanctions
Financial firms and crypto businesses use geo-blocking as part of sanctions screening. The US Office of Foreign Assets Control has brought enforcement cases against crypto companies that processed transactions for users whose IP addresses placed them in sanctioned jurisdictions, treating the failure to use available location data as a compliance weakness under OFAC sanctions. Cryptocurrency exchanges therefore block IP ranges from comprehensively sanctioned countries and regions and treat VPN use as a risk indicator for sanctions evasion. Regulators expect geo-blocking to sit alongside customer screening, not to replace it.
Regulation and limits
In the European Union, Regulation (EU) 2018/302, applicable since December 2018, bans unjustified geo-blocking and discrimination by nationality or residence in many online sales of goods and services. Gambling, along with audiovisual and financial services and certain other sectors, is outside its scope, so gambling operators may, and often must, block by country. Geo-blocking remains imperfect: VPNs, residential proxies and borrowed identities can defeat simple IP checks, and overblocking can shut out lawful customers travelling abroad. Regulators therefore judge firms on whether their combination of location, identity and payment controls fits their risk-based approach, rather than on any single technical check.