Ready for fibre optics?
Unter- und Obersiggenthal already are
Free choice of provider
Ready for fibre optics?
Unter- und Obersiggenthal already are
Free choice of provider
The fibre optic network for Untersiggenthal and Obersiggenthal
Siggenthal4net provides a fully comprehensive, ultra-fast point-to-point FTTH fibre optic network in Untersiggenthal and Obersiggenthal. Every home and business benefits from reliable fibre optic internet, stable telephony and modern TV services – delivered directly via the optical telecommunications outlet (OTO).
Your personal advisor
Professional, neutral & free
How I support you
Clarifying your needs &
comparing offers
Support with subscription selection, switching providers & formalities
Help with connection & activation
Customer Consultant, Siggenthal4net AG
Providers on the Siggenthal4net Fibre Optic Network
Your choice. Your provider. Our network.
Providers on the Siggenthal4net Fibre Optic Network
Your choice. Your provider. Our network.
The best network compared to lower-quality access technologies
Status: 27 January 2026 / Excluding one-time and time-limited discounts
* Sunrise offers its high-speed products via the Siggenthal4net fibre-optic network. The slower products are based on their own legacy copper and coaxial cable networks.
Your benefits at a glance
In homes
and businesses
Fibre connection
including OTO outlet
already available.
Ready to use
immediately
No waiting time.
Connect the modem.
Done.
Dedicated
fibre line
Full performance without sharing with neighbours.
Free choice
of provider
Multiple providers available.
No provider lock-in.
Stable and
reliable
Ideal for everyday use, home office and business.
Already in homes
and businesses
Ready to use
immediately
Dedicated
fibre line
Free choice
of provider
Stable and
reliable
What makes our fibre optic network unique?
Discover why our fibre optic network in Unter- and Obersiggenthal has no equal.