Fiber optic deployment, FTTH building connections and network installation – across Germany, to Telekom standards.
Numbers that speak for themselves.
Customer satisfaction
Active teams across Germany
Connections per month
About Us
Reliability, precision and future-ready fiber optic deployment – as a certified subcontractor to Telekom standards, across Germany.
Behind every successful fiber project stands a well-coordinated team. At DataNetzBau, experienced technicians, site managers and project coordinators work hand in hand with a single goal: the highest quality in fiber optic deployment, from civil works through to OTDR measurements.
Our group unites three companies – DataNetzBau GmbH, M-Technik GmbH and Multikom Sp. z o.o. – jointly delivering fiber rollout projects across Germany: FTTH, FTTB and FTTx connections, backbone splicing, building connections and network installations for Deutsche Telekom, regional carriers and municipalities.
With over 30 active teams, we are on the ground wherever the German fiber rollout is moving forward – and we are expanding into the Netherlands, Belgium and France. We plan, build and document to the highest standards – efficient, safe and Telekom-compliant.
Why DataNetzBau?
What makes us the right partner for your fiber optic infrastructure projects.
Technical Expertise
Certified technicians, tested fiber optic work and quality to Telekom standards.
Modern Equipment
Equipment from MAL-MET, Fujikura, EXFO and Kaeser. Precise measurements, mobile teams and up-to-date technology.
Germany & Europe
Over 30 active teams across Germany – and growing in Europe: the Netherlands, Belgium and France. In-house logistics and rapid deployment.
Direct Communication
Dedicated contacts, clear schedules and daily updates ensure transparency and trust.
Ready to start your next project?
Get in touchRapid Response
Your partner when things go wrong.
When deadlines slip, previous work needs reworking, or extra teams are needed on site at short notice — we step in. Fast, professional, no ramp-up time.
Deadlines at Risk
When the handover date is about to slip, we mobilise within days rather than weeks. Well-coordinated teams, in-house logistics, no slow ramp-up.
Rework & Remediation
Faulty previous work? Splices that won’t hold? Missing documentation? We take over, audit and bring the project back to Telekom standard.
Immediate Mobilisation
Over 30 active teams across Germany. When you need additional capacity at short notice, we deliver it — also in parallel with your existing team.
Is it burning at your site? Let’s talk.
Request rapid responseOur Fiber Optic Services
From initial planning through to handover – we deliver turnkey solutions for fiber deployment in Germany: FTTH, FTTB and FTTx, building connections, splicing and network installation. No rework required after us.
Civil Engineering & Duct Work for Fiber
Professional installation of duct systems and cable protection conduits for FTTH, FTTB and backbone routes. We work in open trenching, horizontal directional drilling and trenchless methods – all to DIN and Telekom standards, for long-lasting fiber infrastructure.
Fiber Optic Blowing (FTTH/FTTB)
High-precision micro-cable blowing for FTTH building connections, FTTB feeds and backbone routes. We work with professional blowing equipment from leading manufacturers such as Jetting, Mal-Met and Fremco – to Telekom standard, with certified specialists and complete blowing documentation.
Splicing & OTDR Measurement
Professional fusion splicing with Fujikura equipment, single-ended and bi-directional OTDR measurements, plus Tier-1 and Tier-2 protocols. Every fiber connection is measured, documented and signed off to Telekom and DIN standards.
Fiber Building Connections (NE3/NE4)
From trenching and wall penetrations to APL installation, we bring the fiber connection safely and professionally into the building – including clean restoration of the outdoor area and complete documentation for the network operator.
IT Technology & Network Installation
Installation and maintenance of active and passive network infrastructure: server cabinets, patch panels, distribution frames, DWDM racks and datacenter cabling – including power cabling per DGUV V3 for future-proof network installations.
Electrical Installation
Professional electrical installations for fiber POPs, industrial and commercial facilities – from distribution cabling through to commissioning. All work in accordance with VDE and DGUV V3, by certified electricians.
Let’s bring your project to life.
Get in touchOur Team
Experience, precision and passion for fiber optic deployment.
Behind every successful project is a strong team. At DataNetzBau, experienced technicians, site managers and project coordinators share a single goal – delivering the highest quality in fiber optic deployment.
Our teams combine technical expertise with a genuine hands-on mentality. Whether civil engineering, blowing, splicing or measurements – every team member knows what counts: reliability, precision and accountability.
With over 30 active teams across Germany, we are on the ground wherever progress is being made. We plan, build and document to the highest standards – efficiently, safely and sustainably.
Expert Knowledge
Certified professionals with up-to-date training in Telekom and DIN standards.
Safety First
All teams are fully equipped with modern safety and measurement technology.
Reliable Delivery
Dedicated contacts, clear processes and on-time project delivery.
Together, we shape the future of networks.
Client References
Proven expertise and successful project delivery in Germany’s fiber optic infrastructure.
TNG Stadtnetz GmbH
Comprehensive fiber optic infrastructure work for the regional network operator in Kiel – from building connections to backbone installation.
NetCologne GmbH
Complete FTTH deployment connecting 31 buildings to a passive fiber optic distribution system.
EKN Tiefbau GmbH
Large-scale fiber optic deployment with blowing, splicing and building connections as part of regional cluster development.
LEC Construction International GmbH
Long-term collaboration with LEC on regional FTTH deployments and infrastructure work.
Deutsche Netzbau GmbH
Subscriber and main cable blowing with complete splicing and measurement under general contractor DeNe.
Tempton Technik GmbH
Fiber optic infrastructure deployment for Telekom's AEON project, focused on datacenter and POP integration.
Your Company Here
You could be our next satisfied client
Ready to join our satisfied clients? Let’s discuss your project and achieve outstanding results together.
Our Certificates
Qualified, tested and certified – our credentials speak for themselves.
FOA CFOT Certification
Certified Fiber Optic Technician to FOA standard (Fiber Optic Association).
DVGW GW129 Safety
Network safety training to DVGW GW129 for work in telecommunications networks.
Traffic Safety (Schaufelmann)
Certified traffic safety officer for public work zones.
Fire Protection Inspection (TÜV SÜD)
Qualified specialist for fire protection systems – certified by TÜV SÜD Akademie.
Fire Protection Systems (ZAPP-ZIMMERMANN)
Training certificate for combination, cable and pipe penetration seals to ZAPP-ZIMMERMANN standards.
First Aid Certificate
First aid training in accordance with DGUV Regulation 1 – for safe on-site work.
Chemical Handling (ISOPA)
Certification for safe chemical handling – compliant with Telekom & EU REACH.
Blowing Technology MAH-4 (MAL-MET)
Training certificate for fiber optic blowing machines MAH-4 and blowing technology to MAL-MET standard.
All certificates of our group of companies are current, verified and approved for fiber optic deployment in Germany.
They reflect our commitment to quality, safety and reliability – from the construction site to final acceptance.
Frequently Asked Questions About Fiber Deployment
Answers to the most common questions about our fiber optic services, standards and field operations.
We cover the entire fiber rollout: civil works and duct laying, fiber blowing for FTTH, FTTB and FTTx, splicing and OTDR measurements, building connections to NE3 and NE4 standards, plus active and passive network installation in POPs and datacenters — all from a single source, to Telekom and DIN standards.
FTTH (Fiber to the Home) brings the fiber directly into the apartment. FTTB (Fiber to the Building) terminates at the building handover point, with internal distribution from there. FTTx is the umbrella term for all fiber rollout architectures. DataNetzBau plans, builds and documents all three variants — including civil works, blowing and building connection.
Our fiber infrastructure is delivered strictly to Deutsche Telekom standards, DIN norms and VDE. Splicing and OTDR measurements follow Tier-1 and Tier-2 protocols. Our technicians are FOA CFOT certified, DVGW GW129 trained and DGUV V3 qualified for electrical work. Every fiber connection is fully documented.
NE3 (Network Level 3) is the distribution level between the main distribution frame and the building handover point. NE4 is the in-building distribution level from the APL to the apartment. DataNetzBau delivers both levels — including fiber building connection, APL installation and clean handover to the network operator.
Yes. DataNetzBau is a certified subcontractor in fiber deployment for Deutsche Telekom, regional carriers and general contractors such as DeNe, NetCologne and EKN. We deliver civil works, micro-cable blowing, splicing, OTDR measurements, building connections and complete backbone routes — to Telekom standard and with full documentation.
With over 30 active teams across Germany and our own logistics, we typically mobilise within days. We also cover short-notice deployments — for example when another subcontractor drops out or a handover deadline is at risk — with ready-to-deploy fiber teams.
DataNetzBau works on fiber deployment across Germany — from Kiel through the Rhineland down to Bavaria. We are also expanding into the Netherlands, Belgium and France. Through our group (DataNetzBau GmbH, M-Technik GmbH, Multikom Sp. z o.o.) we also cover cross-border FTTH and backbone projects.
Every splice is individually measured and protocolled. OTDR measurements are taken single- and bi-directionally (Tier-1 and Tier-2), including attenuation, reflection and length analysis. You receive complete documentation: plans, splice register, OTDR diagrams — all in the format the network operator requires (PDF, XML, EDI).
Your Direct Line to Us
Need help with a fiber optic project? Contact us directly. We are available across Germany.