1&1 Telecommunication SE

1und1.de

telecommunications

1und1.de

Montabaur, Rhineland-Palatinate, Germany

1001-5000 employees

4522000000 revenue

LinkedIn Profile

About 1&1 Telecommunication SE

open ran technology, fiber optic network coverage, digital transformation, digital infrastructure, utilities, scalable networks, customer service, fiber optic internet for streaming, sustainable telecom practices, energy efficiency, ssl certificates, fiber-optic infrastructure, cloud-based network, customer service excellence, next-generation telecom technology, high-speed internet, fiber-to-the-home (ftth), fiber optic network innovation, fiber internet, information technology

1&1 Telecommunication SE's Tech Stack

28 technologies detected · 9 decision makers · Emails available

Sales Outreach Angle

1&1 Telecommunication SE uses 1&1 Email Provider, Microsoft Office 365, Unruly Media among other technologies. Use StackWho to identify the right decision-maker email for targeted sales outreach, recruiting, or partnership development.

1&1 Telecommunication SE's Position in the StackWho Database

• 1&1 Telecommunication SE is 1 of 6,980 telecommunications companies tracked in StackWho.
• 6,918 telecommunications companies in our database have verified decision-maker emails (99% of the cohort).
• 398 companies in Rhineland-Palatinate are in the StackWho database.
• 272 telecommunications companies are in the 1001-5000 employee range (same size as 1&1 Telecommunication SE).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated August 2026.

Frequently Asked Questions

What technology does 1&1 Telecommunication SE use?

1&1 Telecommunication SE uses 1&1 Email Provider, Microsoft Office 365, Unruly Media, Facebook Widget, MouseFlow, AppDynamics, and 22 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at 1&1 Telecommunication SE?

StackWho has verified email addresses for 9 decision makers at 1&1 Telecommunication SE. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach 1&1 Telecommunication SE directly for sales, recruiting, or partnerships.

What industry is 1&1 Telecommunication SE in?

1&1 Telecommunication SE operates in the telecommunications industry, headquartered in Montabaur, Rhineland-Palatinate, Germany. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export 1&1 Telecommunication SE's contact data?

Yes. StackWho Pro members can export decision maker contact data for 1&1 Telecommunication SE and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.