Cnlab Speed Test (Switzerland)
This page helps Swiss internet users check their connection speed using the metrics favored by cnlab, the reference benchmark for Switzerland.
Major Swiss ISPs like Swisscom, Sunrise, and Salt rely on cnlab diagnostics to verify ifthey are delivering the advertised 1 Gbps or 10 Gbps (XGS-PON) speeds.
How to interpret your Cnlab speed test
Swiss internet is among the fastest in the world. Here is what your results mean on a typical Swiss Fiber or Cable line:
Download Speed:
• Fiber (Swisscom/Sunrise/Salt): Should clearly reach 900+ Mbps on a 1 Gig line.
• Vectoring (Copper): Often capped at 100-500 Mbps depending on distance to street
cabinet.
Upload Speed:
• Fiber: Symmetrical (same as download).
• Cable (Sunrise/UPC): Often lower (e.g., 100 Mbps upload on 1 Gig download).
Response Time (Ping):
• Fiber: Extremely fast (< 5ms).
• 5G Home Internet: Variable
(15-30ms).
The "UID" (User Identifier)
Cnlab tests generate a unique UID. If you call Swisscom or Sunrise support about slow speeds, they will ask for this UID to "look up your test" in their professional portal. It proves you performed the test correctly.
Swiss Router Login – Internet-Box & Connect Box
To optimize your Wi-Fi channels for a better speed test, you often need to log in to your router.
| Router Model | Login IP | Default Credentials |
| Swisscom Internet-Box 3/4/5 | 192.168.1.1 or internetbox.home | Set on first setup (or reset to create new) |
| Sunrise Connect Box | 192.168.1.1 | "Settings Password" (on bottom sticker) |
| Salt Fiber Box (X6) | 192.168.1.1 or salt.box | admin / admin (or check lid sticker) |
Steps to Optimize Speed (Swisscom/Sunrise)
- Log in to your router using the IPs above.
- Find the WLAN or Wi-Fi settings.
- Split the bands: Give your 5 GHz network a different name (e.g., "Home_5GHz").
- Connect your testing device exclusively to the 5 GHz Wi-Fi to avoid slow 2.4 GHz interference.
Common Causes of Slow Scores
1. Wi-Fi Interference (2.4 GHz): In Swiss apartments (multiple neighbors), 2.4 GHz is often congested. Use 5 GHz or Wi-Fi 6.
2. Old LAN Cables: Ensure you are using Cat5e or Cat6 cables. Old Cat5 cables are capped at 100 Mbps.
3. TV Boxes: Simultaneously running Swisscom Blue TV or Sunrise TV streams can consume bandwidth, affecting the test slightly.
Support Contacts
If your speeds are consistently below 50% of your plan:
- Swisscom: 0800 800 800 (Mention your Cnlab UID)
- Sunrise: 0800 707 707
- Salt: 0800 700 800
Cnlab Speed Test FAQs
What is the difference between Cnlab and Ookla? Cnlab is the "scientific" reference used by Swiss ISPs for diagnostics. It uses longer test cycles and specific servers within the Swiss IXP (Internet Exchange) to rule out international routing issues.
Why is my Wi-Fi speed only 500 Mbps on a 10 Gig line? This is a device limit. Most iPhones and laptops max out at 600-800 Mbps on Wi-Fi 6. To see full 10 Gbps speeds, you need a desktop PC with a 10GbE network card.
Does a VPN affect my Cnlab score? Yes. VPNs add encryption overhead. Always disable your VPN before running a speed test for accurate line measurement.
Compare with International Benchmarks
Check how your Swiss connection compares to global standards:
- Google Fiber Speed Test: US-based Gigabit standard.
- Deutsche Telekom Speed Test: The standard in neighboring Germany.
- Orange Speed Test: The standard in neighboring France.