Germany · open in early access
Is my site blocked on Telekom in Germany?
Telekom blocks sites for three reasons: copyright blocks agreed through the CUII, made in its DNS (the internet's address book), its own filter against malware and phishing, and a few orders from authorities. On home lines, the Speedport 7 router adds a filter of its own, Protect Home. A wrong copyright block has to be raised with the CUII, not with Telekom; for Telekom's own filters we found no published route for site owners.
Sources: Deutsche Telekom, Transparency Report 2025 · Deutsche Telekom, 14 November 2025 · CUII, contact; pages without a date checked 11 November 2026
Check your page in Germany now
We open it through home and mobile connections of Telekom, Vodafone and O2, the way their customers would, and tell you provider by provider whether it opens. Free, about a minute, a few checks per hour.
What does Telekom block, and on whose orders?
Telekom's transparency report for 2025 is the first to list its network blocks in Germany. It shows 300 under "CUII", 1 under BaFin (the financial regulator) and 3 under extremist content, from North Rhine-Westphalia's media authority. The table gives no unit; its comments for the first two rows read "Request CUII" and "Request BaFin". For copyright, Telekom says it blocks in DNS on the basis of court decisions and CUII recommendations. The same report counts the domains its security team blocked for malware and phishing; those figures are on our Germany page, together with how the CUII works.
Source: Deutsche Telekom, Transparency Report 2025, checked 11 November 2026
What does a Telekom customer see on a blocked site?
Usually an error, not an explanation. Telekom's answer for CUII-blocked names has changed over time. In August 2024 its DNS servers began answering that a blocked domain does not exist; Telekom told netzpolitik.org this was temporary while it worked on a landing page. In our own measurements in November 2026, Telekom sent visitors of a blocked name to a notice server. Over https (encrypted connections), a visitor sent to a notice server usually sees a browser security error, not the notice. Telekom's report does not say what a customer sees when its malware filter blocks a domain.
Source: netzpolitik.org, 26 February 2025
Can Protect Home on the Speedport 7 block my site?
Yes, for homes that use it. Protect Home is built into Telekom's Speedport 7 router and protects every connected device from known harmful sites and phishing. Telekom says the functions are active straight away on a rented router; people who buy the router can book the service for 0.95 euros a month. Parents can also switch on a child filter that uses lists from the non-profit JusProg; for devices set to ages 0 to 5 and 6 to 11 only allowed sites open, from age 12 listed sites are blocked. Protect Home does not cover mobile internet. A wrong listing therefore hits only homes whose router runs it, and the same page can open fine on another Telekom line.
Source: Deutsche Telekom, 14 November 2025
Is Telekom mobile filtered differently from Telekom home?
Yes. Protect Home, the consumer filter above, works only behind the home router, so it never touches Telekom mobile data. Business customers have a separate filter: Telekom's Security OnNet Basic runs in its network, with no app or router needed, and blocks fraudulent websites and phishing links. It has been included in Telekom's current business mobile tariffs since early 2025, where Telekom says it fended off about 11 million attacks within a year, and since 25 March 2026 also in business DSL and fibre tariffs. So a site can be blocked for a company's staff on Telekom business lines while ordinary Telekom customers open it.
Sources: Deutsche Telekom, 14 November 2025 · Deutsche Telekom, 25 March 2026
Who can lift a wrong Telekom block?
For a CUII block, the CUII, because Telekom applies it on the CUII's and the courts' decision and its support cannot lift it. Its contact form has sender types for a domain owner and for the operator of a site with a blocking recommendation, and the CUII promises an informal acknowledgement within a week. A domain blocked under a previous owner is a case to raise there. For Telekom's own malware filter and for Protect Home, we found no published route for reporting a wrongly blocked site. Telekom's abuse team (abuse@telekom.de) is listed for reports of misuse of Telekom services and for help with infected devices; its page does not mention wrongly blocked sites.
Sources: CUII, contact · Deutsche Telekom, Abuse; both checked 11 November 2026
How can I check a Telekom block myself?
Ask the visitor three things: is it a home line or mobile, does their home use a Speedport 7 with Protect Home, and what exactly does the browser show (a screenshot helps). Then search the sites listed on cuii.info, and look in OONI Explorer for tests on Telekom's network, number AS3320. OONI publishes tests run by people with its OONI Probe app, so it has results only for addresses someone has tested.
Sources: PeeringDB, AS3320 · OONI, Explorer guide, updated 15 March 2023; checked 11 November 2026
What does linkspect measure on Telekom?
We open your URL through Telekom home broadband and mobile connections, the way its customers would, and say for each whether the page opened and, if not, what stopped it. On mobile we cannot ask Telekom's DNS server directly, so a DNS block there is reported as "likely" at most. The same check also covers Vodafone and O2.
Facts checked on 11 November 2026.