A gambling blacklist is one of the clearest public outputs of enforcement: a regulator identifies a domain or service and takes action to restrict access or visibility. But a static list is only a snapshot. The more useful question is what happens after the block — whether traffic falls, a new domain appears, the operator geoblocks, search visibility changes or the same service resurfaces elsewhere.
- Blacklists provide authoritative jurisdiction-specific evidence, but they are not exhaustive maps of the illegal market.
- Blocking mechanisms vary: ISPs, DNS, registrars, hosts, search engines, app stores and payment providers can all play different roles.
- Mirror and replacement domains mean a blacklist should feed a monitoring workflow, not end it.
- Every relationship needs evidence: similar names alone are not enough to prove common control.
What is a gambling blacklist?
A gambling blacklist is a list of domains, URLs or services that a regulator or authority has identified for blocking, delisting, warning or another enforcement action. The legal meaning of inclusion depends on the jurisdiction. France’s ANJ, for example, publishes a non-exhaustive blacklist of sites that have been subject to administrative blocking.
“Non-exhaustive” is an important word. Absence from a blacklist does not prove that a gambling site is authorised. A blacklist is evidence of action already taken, not a complete inventory of every illegal operator accessible in a country.
How illegal gambling websites are blocked
Different jurisdictions use different legal and technical routes. Denmark uses court-backed blocking and has a cooperation framework for mirrors. France can order ISP blocking and search delisting. Australia’s ACMA requests ISP blocking of services found to breach the Interactive Gambling Act. Italy publishes a maintained list of gambling websites subject to blocking.
Great Britain uses a broader disruption toolkit that also involves cease-and-desist notices, hosts, registrars, search engines and other third parties. This matters because access can be reduced at several points in the consumer journey rather than relying on a single technical control.
Why mirror domains change the enforcement problem
When a known domain is blocked, the service behind it may remain operational through another hostname. The replacement can be a deliberate mirror, a new campaign domain, a redirector or a previously dormant domain. The visible brand can stay almost identical while the address changes.
That is why investigators should preserve historical evidence and compare new domains against the known case. Useful signals include redirects, page structure, selected technical resources, operator text, contact details, jurisdictional behaviour and repeated infrastructure patterns. No single signal should be treated as proof on its own.
Blocking is measurable — but success needs more than a domain count
Counting blocked URLs is easy; measuring market impact is harder. The UK Gambling Commission has compared web-engagement estimates before and after disruption and reports that geoblocking and registrar blocks appear more effective than search removal in the data it has analysed, while noting methodological limitations.
A mature performance framework can therefore track several outcomes: whether the original domain remains reachable, whether replacement domains appear, how quickly they are found, whether search visibility changes, and whether consumer engagement falls after enforcement.
Build the blacklist as a living dataset
Each entry should retain the source authority, jurisdiction, enforcement date, domain or URL, current status, observed redirects and links to related cases. Add confidence levels for inferred relationships, and separate verified mirrors from weaker investigative candidates.
The operational advantage is speed. Instead of starting from zero each time a complaint arrives, an analyst can ask whether the domain is already related to a known cluster, whether a similar replacement appeared previously, and what disruption action worked last time.
Frequently asked questions
What is a gambling blacklist?
A regulator or authority list of domains, URLs or services that have been identified for blocking, delisting, warning or another enforcement action.
Does being absent from a gambling blacklist mean a site is legal?
No. Many regulator blacklists are explicitly non-exhaustive. Legal status must be assessed against the licensing rules of the relevant jurisdiction.
What is a mirror gambling site?
An alternate domain or website that provides access to substantially the same gambling service or content. The relationship should be verified using evidence rather than name similarity alone.
Why monitor after a gambling website is blocked?
Because operators can rotate domains, change redirects, use affiliates or create replacements. Post-enforcement monitoring shows whether the intervention actually reduced access and what appeared next.
Primary & regulatory sources
- Danish Gambling Authority — Report on Illegal Gambling 2025
- Danish Gambling Authority — 98 illegal gambling sites blocked (19 Aug 2026)
- ANJ — Blacklist of prohibited gambling websites in France
- ACMA — Latest illegal online gambling websites blocked (15 Jul 2026)
- ADM Italy — Websites subject to gambling blocking, updated Aug 2026
- UK Gambling Commission — Disruption of illegal online gambling
This article provides regulatory and technical analysis, not legal advice.