1&1 Speed Test - Check DSL and Fiber Speed
Test your 1&1 internet speed in Germany
www.1und1.de1&1 is one of Germany's largest internet providers with approximately 4.2 million broadband subscribers. Part of United Internet AG, 1&1 offers DSL, VDSL, and Glasfaser plans using wholesale access to Deutsche Telekom and Telefonica networks. Test your 1&1 connection to measure actual download, upload, and latency performance.
About 1&1
1&1, founded in 1988 and headquartered in Montabaur, Germany, is a major telecommunications brand of United Internet AG. The company holds an 11.1% share of Germany's broadband market with approximately 4.2 million subscribers.
1&1 provides DSL, VDSL, fiber, and mobile services using wholesale access to Deutsche Telekom's fixed-line network and Telefonica's mobile infrastructure. In 2023, 1&1 launched its own 5G mobile network using Open RAN technology. The company also operates the 1&1 Versatel business division and the web hosting brands IONOS and GMX.
1&1 Plans and Services
1&1 offers several internet plans across different technologies and price points.
1&1 DSL plans range from 29.99 to 69.99 EUR per month. DSL 50 offers 50/10 Mbps at 29.99 EUR. DSL 100 provides 100/40 Mbps VDSL at 39.99 EUR.
DSL 250 delivers 250/40 Mbps Super Vectoring at 49.99 EUR. Glasfaser 1000 reaches 1 Gbps symmetrical at 69.99 EUR where FTTH is available. All plans include unlimited data, a FRITZ!Box router, and flat-rate telephony. Mobile plans on the 1&1 5G network start from 9.99 EUR per month.
1&1 Internet Plans
| Plan | Speed | Price | Features |
|---|---|---|---|
| DSL 50 dsl | 50 Mbps | 29.99 EUR/month |
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| DSL 100 dsl | 100 Mbps | 39.99 EUR/month |
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| DSL 250 dsl | 250 Mbps | 49.99 EUR/month |
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| Glasfaser 1000 fiber | 1000 Mbps | 69.99 EUR/month |
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Prices and availability may vary by location. Contact 1&1 for current offers.
1&1 Coverage by Region
1&1 performance varies by location. Coverage density, local infrastructure, and network congestion affect speeds in each market.
North Rhine-Westphalia
Largest subscriber base for 1&1 due to population density.
Bavaria
M-net fiber competes strongly in Munich. 1&1 better for smaller Bavarian towns.
Lower Saxony
Glasfaser Nordwest expanding fiber in the northwest.
Berlin
Strong cable competition from Vodafone and PYUR in Berlin.
Rhineland-Palatinate
1&1 Versatel operates its own business fiber backbone in this region.
Is 1&1 Right for You?
Every provider has trade-offs. Here is how 1&1 performs based on real-world usage and customer feedback.
Strengths
- Consistent quality - ranked best in Germany for reliable everyday performance by Opensignal 2025
- FRITZ!Box router included with all plans at no extra cost
- Flexible contract options with monthly cancellation available
- Own 5G mobile network launched in 2023 using Open RAN technology
- Competitive DSL pricing starting at 29.99 EUR per month
- Symmetrical 1 Gbps speeds on Glasfaser fiber plans
- Free domain and email included with broadband packages
Weaknesses
- DSL relies on Telekom wholesale network - limited control over line quality
- FTTH fiber availability limited to roughly 25% of German households
- Upload speeds capped at 40 Mbps on VDSL plans
- 5G mobile network still in early rollout with limited coverage
- Customer service wait times reported above 10 minutes during peak periods
Best For
- Price-conscious households wanting reliable DSL on the Telekom network
- Customers who want a FRITZ!Box router included at no added cost
- Users needing combined broadband and mobile from one provider
- Small businesses wanting affordable VDSL with flat-rate telephony
- Tech-savvy users interested in early 5G Open RAN mobile access
Not Ideal For
- Users needing guaranteed fiber speeds - FTTH availability still limited
- Gamers requiring ultra-low latency - DSL adds distance-based lag
- Heavy uploaders needing more than 40 Mbps upstream on VDSL
How 1&1 Compares
Side-by-side comparison of 1&1 against major competitors in Germany.
| Competitor | Speed | Price | Coverage | Verdict |
|---|---|---|---|---|
| Telekom | Both offer VDSL up to 250 Mbps and Glasfaser up to 1 Gbps on the same lines. | 1&1 DSL 100 costs 39.99 EUR. Telekom MagentaZuhause L costs 48.95 EUR for the same 100 Mbps. | Both cover 86% of German households via VDSL. Fiber depends on local FTTH deployment. | Choose 1&1 for lower prices on the same Telekom DSL lines. Choose Telekom for premium support and Hybrid bonding. |
| Vodafone | 1&1 VDSL tops at 250 Mbps. Vodafone cable reaches 1 Gbps in more areas. | 1&1 DSL 250 costs 49.99 EUR. Vodafone GigaZuhause 1000 starts at promotional 44.99 EUR. | 1&1 available via Telekom DSL lines nationwide. Vodafone cable covers 24 million households. | Choose 1&1 for reliable DSL where cable is unavailable. Choose Vodafone for faster cable speeds. |
| Congstar | 1&1 DSL goes up to 250 Mbps and Glasfaser 1 Gbps. Congstar DSL maxes at 50 Mbps. | Congstar DSL 50 costs 30 EUR. 1&1 DSL 50 costs 29.99 EUR with a FRITZ!Box included. | Similar DSL coverage since both use Telekom lines. 1&1 adds fiber where available. | Choose 1&1 for faster speeds and included router. Choose Congstar for simple budget mobile plans. |
Troubleshooting 1&1 Issues
Common 1&1 connection problems and how to fix them.
DSL speed only reaching 30-60 Mbps instead of advertised 100 Mbps
Cause: VDSL speed depends on copper line length from the nearest DSLAM cabinet.
- Check the FRITZ!Box DSL info page for line attenuation and sync rate
- Connect via ethernet cable to rule out WiFi as the bottleneck
- Restart the FRITZ!Box and wait 5 minutes for line re-sync
- Contact 1&1 support to request a line quality check from Telekom
- Consider switching to Glasfaser if FTTH is available at your address
WiFi disconnects frequently or signal weak in some rooms
Cause: Router placement, wall materials, and interference from neighboring networks reduce signal.
- Place the FRITZ!Box in a central elevated location away from walls
- Switch to the 5 GHz WiFi band for less interference
- Add a FRITZ!Repeater to extend coverage to distant rooms
- Update FRITZ!Box firmware via the admin panel at fritz.box
New connection shows no internet after router setup
Cause: Activation date not yet reached or incorrect PPPoE credentials entered.
- Verify your activation date in the 1&1 Control Center
- Check that PPPoE username and password are entered correctly in the FRITZ!Box
- Restart the FRITZ!Box after confirming credentials
- Call 1&1 activation hotline if the line does not sync within 24 hours
1&1 History
Key milestones in 1&1 development and network expansion.
Ralph Dommermuth founded 1&1 EDV-Marketing GmbH in Montabaur as a marketing services firm
1&1 became the first German internet company listed on the Frankfurt Stock Exchange
Holding company restructured and renamed to United Internet AG
Entered the German DSL broadband market and launched VoIP telephony
Signed Germany's first MVNO contract with Vodafone for mobile services
1&1 Telecommunication and Drillisch AG merged to form 1&1 AG
Won 5G spectrum in the Bundesnetzagentur frequency auction
Launched Europe's first fully virtualized 5G mobile network using Open RAN
Test Your 1&1 Speed
Run a free speed test to check if 1&1 delivers the speeds you are paying for. Test during peak evening hours for the most realistic results. Compare your results against 1&1 advertised speeds above.
1&1 Speed Test FAQ
How fast is 1&1 internet?
1&1 offers DSL speeds from 16 Mbps to 250 Mbps using Deutsche Telekom's VDSL network with Vectoring and Super Vectoring technology. Glasfaser plans deliver up to 1 Gbps symmetrical where FTTH is deployed. Actual DSL speeds depend on your distance from the nearest DSLAM and copper line quality. VDSL 100 typically delivers 80-100 Mbps in good conditions. Run a speed test to check your actual 1&1 performance.
Does 1&1 have its own network?
1&1 uses Deutsche Telekom's fixed-line infrastructure for DSL and VDSL services through wholesale access. For mobile, 1&1 launched its own 5G network in 2023 using Open RAN technology, supplemented by national roaming on Telefonica's O2 network. 1&1 Versatel operates its own fiber backbone for business customers. Fixed broadband customers access the same Telekom infrastructure as Telekom retail customers, with 1&1 managing its own backhaul capacity.
How do I test my 1&1 speed?
Use the speed test tool on this page to measure your 1&1 download speed, upload speed, and ping latency. Connect via ethernet cable to your FRITZ!Box router for accurate results. WiFi speeds are typically lower due to interference. Test at different times including peak hours between 19:00 and 22:00 to assess congestion. Compare results against your plan's advertised speed to verify 1&1 is delivering expected performance.
What is 1&1 Glasfaser?
1&1 Glasfaser is the fiber-optic broadband service offering speeds up to 1 Gbps symmetrical through FTTH connections. Availability depends on whether fiber has been deployed to your address by Deutsche Telekom, Deutsche Glasfaser, or other infrastructure providers. Only about 25% of German households currently have FTTH access. Check availability on the 1&1 website using your address. Where fiber is not available, 1&1 offers VDSL as the next best option.