Company lists · Data refreshed September 2026
Top 25 Calling companies based in Germany
RevenueBase identified 228 company matches for calling companies associated with Germany as of September 2026 and tracks 2,253 professional contacts across them, including 914 with verified work emails. Berlin is the largest hub.
This list covers company matches for calling companies associated with Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest calling companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 248 contacts → | ||||
Exact match “Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 201 contacts → | ||||
Exact match “Founded in 2004, we at sipgate were the first German VoIP provider and have been developing internet and telephony services ever since.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 96 contacts → | ||||
Exact match “innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 75 contacts → | ||||
Exact match “Enreach ist ein europaweit führender Anbieter von Unified-Communications- und Cloud-Contact-Center-Lösungen.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 67 contacts → | ||||
Exact match “Die HFO Telecom GmbH verbindet modernste Technologien im Telekommunikationsbereich mit langjähriger Erfahrung.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 55 contacts → | ||||
Exact match “Placetel ist in Deutschland einer der führenden Anbieter von professionellen Telefonanlagen aus der Cloud und ein Dienst der Gamma Placetel GmbH.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 45 contacts → | ||||
Exact match “IT Managed Services und Cloud Telefonie 2006 wurde die byon gmbh mit Sitz in Frankfurt/Main gegründet.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 36 contacts → | ||||
Exact match “SH business COM, zählt seit über 30 Jahren zu den größten und leistungsstärksten Kommunikationszentren in Deutschland.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 34 contacts → | ||||
Exact match “Für Unternehmen, Institutionen und öffentliche Verwaltung Die KEVAG Telekom (KTK) ist seit 1997 Ihr zuverlässiger Partner für professionelle Telekommunikationslösungen.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 33 contacts → | ||||
Exact match “Das Büro der Zukunft.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 32 contacts → | ||||
Exact match “We are global telecommunications provider of international voice, data, messaging and outsourcing services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 31 contacts → | ||||
Exact match “Established in 2002, 42com Telecommunication GmbH started by designing a white-label VoIP platform.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 28 contacts → | ||||
Exact match “S-KON Sales Kontor Hamburg AG is a telecommunications company based out of Germany.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 26 contacts → | ||||
Exact match “SYNO steht für Synergien.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 25 contacts → | ||||
Exact match “Die TELE THORWARTH GmbH realisiert für Geschäftskunden aller Branchen professionelle und innovative Lösungen in der Telekommunikation mit den Schwerpunkten Mobil- und Festnetze…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 24 contacts → | ||||
Exact match “Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 21 contacts → | ||||
Exact match “We offer advantages of modern telephone systems and cloud solutions as well as access to landline network and internet, all from one source.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 21 contacts → | ||||
Exact match “Die OFF Telekommunikation GmbH ist DER Partner für moderne Kommunikationslösungen.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 20 contacts → | ||||
Exact match “Wir sind speziell ausgebildete Dienstleister und Berater für Business-Telekommunikation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 19 contacts → | ||||
Exact match “Your experts in information technology.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 18 contacts → | ||||
Exact match “Seit der Gründung im Jahr 1997 hat sich die Netcom Kassel zu einem der wichtigsten Telekommunikationsunternehmen in Hessen entwickelt.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 16 contacts → | ||||
Exact match “Wir verbinden Informationstechnologie und Telekommunikation Seit 1987 stehen wir als zuverlässiger Partner an der Seite unserer Kunden.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 16 contacts → | ||||
Exact match “Schollmeier - Dein 360° Telekommunikationsanbieter.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 15 contacts → | ||||
Exact match “eNgY SOLUTIONS is revolutionizing business communication.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 15 contacts → | ||||
Exact match “WIR VERBINDEN BUSINESS TEAMS!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “calling companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 228 calling companies based in Germany
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Calling companies based in Germany at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 228 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Germany whose business descriptions match “calling companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 914 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “calling companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many calling companies are there based in Germany?
RevenueBase identified 228 company matches for calling companies associated with Germany as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Plusnet Gmbh tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most calling companies?
Berlin leads with 19 company records, followed by Munich (8) and Hamburg (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 914 professional contacts with verified work emails tracked across these 228 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 228 calling companies based in Germany. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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Company intelligence · public preview
Top 25 calling companies based in Germany
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 228 matching company records for calling companies based in Germany, with 2,253 tracked contacts and 914 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 calling companies based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Plusnet Gmbhplusnet.deHQ: Cologne, GermanyReported employees: 201-500 | Cologne, Germany | 201-500 | Exact match | 248 contacts → |
“Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Sipgatesipgate.deHQ: Düsseldorf, GermanyReported employees: 201-500 | Düsseldorf, Germany | 201-500 | Exact match | 201 contacts → |
“Founded in 2004, we at sipgate were the first German VoIP provider and have been developing internet and telephony services ever since.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Innovaphoneinnovaphone.comHQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 96 contacts → |
“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Enreach DEenreach.deHQ: Bochum, GermanyReported employees: 1,001-5,000 | Bochum, Germany | 1,001-5,000 | Exact match | 75 contacts → |
“Enreach ist ein europaweit führender Anbieter von Unified-Communications- und Cloud-Contact-Center-Lösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Gamma DEgammacommunications.deHQ: Oberkotzau, GermanyReported employees: 51-200 | Oberkotzau, Germany | 51-200 | Exact match | 67 contacts → |
“Die HFO Telecom GmbH verbindet modernste Technologien im Telekommunikationsbereich mit langjähriger Erfahrung.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Placetelplacetel.deHQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 55 contacts → |
“Placetel ist in Deutschland einer der führenden Anbieter von professionellen Telefonanlagen aus der Cloud und ein Dienst der Gamma Placetel GmbH.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Byon Gmbhbyon.deHQ: Frankfurt, GermanyReported employees: 51-200 | Frankfurt, Germany | 51-200 | Exact match | 45 contacts → |
“IT Managed Services und Cloud Telefonie 2006 wurde die byon gmbh mit Sitz in Frankfurt/Main gegründet.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | SH Business COM Gmbhmysh.de HQ: Herbolzheim, GermanyReported employees: 51-200 | Herbolzheim, Germany | 51-200 | Exact match | 36 contacts → |
“SH business COM, zählt seit über 30 Jahren zu den größten und leistungsstärksten Kommunikationszentren in Deutschland.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Kevag Telekom Gmbhkevag-telekom.deHQ: Koblenz, GermanyReported employees: 51-200 | Koblenz, Germany | 51-200 | Exact match | 34 contacts → |
“Für Unternehmen, Institutionen und öffentliche Verwaltung Die KEVAG Telekom (KTK) ist seit 1997 Ihr zuverlässiger Partner für professionelle Telekommunikationslösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Ebuero AGebuero.deHQ: Berlin, GermanyReported employees: 201-500 | Berlin, Germany | 201-500 | Exact match | 33 contacts → |
“Das Büro der Zukunft.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Apelbyapelby.comHQ: Düsseldorf, GermanyReported employees: 51-200 | Düsseldorf, Germany | 51-200 | Exact match | 32 contacts → |
“We are global telecommunications provider of international voice, data, messaging and outsourcing services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  42com Telecommunication Gmbh42com.comHQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 31 contacts → |
“Established in 2002, 42com Telecommunication GmbH started by designing a white-label VoIP platform.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | S-Kon Sales Kontor Hamburg AGsaleskontor.de HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 28 contacts → |
“S-KON Sales Kontor Hamburg AG is a telecommunications company based out of Germany.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Syno Consulting Group AGsyno.agHQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 26 contacts → |
“SYNO steht für Synergien.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Tele Thorwarth Gmbhtele-thorwarth.deHQ: Schmalkalden, GermanyReported employees: 51-200 | Schmalkalden, Germany | 51-200 | Exact match | 25 contacts → |
“Die TELE THORWARTH GmbH realisiert für Geschäftskunden aller Branchen professionelle und innovative Lösungen in der Telekommunikation mit den Schwerpunkten Mobil- und Festnetze…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Toplink Gmbhtoplink.deHQ: Darmstadt, GermanyReported employees: 11-50 | Darmstadt, Germany | 11-50 | Exact match | 24 contacts → |
“Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Firstcom Europefirstcomeurope.deHQ: Goldbach, GermanyReported employees: 51-200 | Goldbach, Germany | 51-200 | Exact match | 21 contacts → |
“We offer advantages of modern telephone systems and cloud solutions as well as access to landline network and internet, all from one source.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Börwang, GermanyReported employees: 51-200 | Börwang, Germany | 51-200 | Exact match | 21 contacts → |
“Die OFF Telekommunikation GmbH ist DER Partner für moderne Kommunikationslösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Good Connected Gmbh & Co. KGgood-connected.deHQ: Herrsching Am Ammersee, GermanyReported employees: 11-50 | Herrsching Am Ammersee, Germany | 11-50 | Exact match | 20 contacts → |
“Wir sind speziell ausgebildete Dienstleister und Berater für Business-Telekommunikation.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Sit-Solutionssit-solutions.deHQ: Adelsdorf, GermanyReported employees: 11-50 | Adelsdorf, Germany | 11-50 | Exact match | 19 contacts → |
“Your experts in information technology.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Netcom Kassel Gesellschaft FÜR Telekommunikation MBHnetcom-kassel.de HQ: Kassel, GermanyReported employees: 51-200 | Kassel, Germany | 51-200 | Exact match | 18 contacts → |
“Seit der Gründung im Jahr 1997 hat sich die Netcom Kassel zu einem der wichtigsten Telekommunikationsunternehmen in Hessen entwickelt.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Bunsieck & Partner Gmbhbunsieck.com HQ: Greven, GermanyReported employees: 11-50 | Greven, Germany | 11-50 | Exact match | 16 contacts → |
“Wir verbinden Informationstechnologie und Telekommunikation Seit 1987 stehen wir als zuverlässiger Partner an der Seite unserer Kunden.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Schollmeier Telekommunikationschollmeier.deHQ: Mannheim, GermanyReported employees: 11-50 | Mannheim, Germany | 11-50 | Exact match | 16 contacts → |
“Schollmeier - Dein 360° Telekommunikationsanbieter.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Engy Solutionsengy.solutions HQ: Dortmund, GermanyReported employees: 11-50 | Dortmund, Germany | 11-50 | Exact match | 15 contacts → |
“eNgY SOLUTIONS is revolutionizing business communication.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Phonekom Business Communications AGphonekom.de HQ: Friedrichsdorf, GermanyReported employees: 11-50 | Friedrichsdorf, Germany | 11-50 | Exact match | 15 contacts → |
“WIR VERBINDEN BUSINESS TEAMS!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 228 company matches
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Calling companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
224 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 228 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for calling companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many calling companies did RevenueBase find based in Germany?
The saved snapshot records 228 matching company records, 2,253 tracked contacts and 914 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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- Calling companies based in Austin, United States
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- Calling companies based in Houston, United States
- Calling companies based in New York, United States
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- Calling companies based in Belgium
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Browse the directory
Cite this list
RevenueBase Data Team. Top 25 calling companies based in Germany. Snapshot: September 21, 2026. https://revenuebase.ai/companies/calling-companies/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
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- New lists
- Calling companies based in Austin, United States
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Company intelligence · public preview
Top 25 calling companies based in Germany
RevenueBase records 228 matching company records for calling companies based in Germany, with 2,253 tracked contacts and 914 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 calling companies based in Germany
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Plusnet Gmbhplusnet.de HQ: Cologne, GermanyReported employees: 201-500 | Cologne, Germany | 201-500 | Exact match | 248 contacts → |
“Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Sipgatesipgate.de HQ: Düsseldorf, GermanyReported employees: 201-500 | Düsseldorf, Germany | 201-500 | Exact match | 201 contacts → |
“Founded in 2004, we at sipgate were the first German VoIP provider and have been developing internet and telephony services ever since.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Innovaphoneinnovaphone.com HQ: Sindelfingen, GermanyReported employees: 51-200 | Sindelfingen, Germany | 51-200 | Exact match | 96 contacts → |
“innovaphone has been playing a decisive role in driving the development of IP telephony and digital transformation for more than 25 years now and is a leading European provider of…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Enreach DEenreach.de HQ: Bochum, GermanyReported employees: 1,001-5,000 | Bochum, Germany | 1,001-5,000 | Exact match | 75 contacts → |
“Enreach ist ein europaweit führender Anbieter von Unified-Communications- und Cloud-Contact-Center-Lösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Gamma DEgammacommunications.de HQ: Oberkotzau, GermanyReported employees: 51-200 | Oberkotzau, Germany | 51-200 | Exact match | 67 contacts → |
“Die HFO Telecom GmbH verbindet modernste Technologien im Telekommunikationsbereich mit langjähriger Erfahrung.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Placetelplacetel.de HQ: Cologne, GermanyReported employees: 51-200 | Cologne, Germany | 51-200 | Exact match | 55 contacts → |
“Placetel ist in Deutschland einer der führenden Anbieter von professionellen Telefonanlagen aus der Cloud und ein Dienst der Gamma Placetel GmbH.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Byon Gmbhbyon.de HQ: Frankfurt, GermanyReported employees: 51-200 | Frankfurt, Germany | 51-200 | Exact match | 45 contacts → |
“IT Managed Services und Cloud Telefonie 2006 wurde die byon gmbh mit Sitz in Frankfurt/Main gegründet.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | SH Business COM Gmbhmysh.de HQ: Herbolzheim, GermanyReported employees: 51-200 | Herbolzheim, Germany | 51-200 | Exact match | 36 contacts → |
“SH business COM, zählt seit über 30 Jahren zu den größten und leistungsstärksten Kommunikationszentren in Deutschland.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kevag Telekom Gmbhkevag-telekom.de HQ: Koblenz, GermanyReported employees: 51-200 | Koblenz, Germany | 51-200 | Exact match | 34 contacts → |
“Für Unternehmen, Institutionen und öffentliche Verwaltung Die KEVAG Telekom (KTK) ist seit 1997 Ihr zuverlässiger Partner für professionelle Telekommunikationslösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Ebuero AGebuero.de HQ: Berlin, GermanyReported employees: 201-500 | Berlin, Germany | 201-500 | Exact match | 33 contacts → |
“Das Büro der Zukunft.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Apelbyapelby.com HQ: Düsseldorf, GermanyReported employees: 51-200 | Düsseldorf, Germany | 51-200 | Exact match | 32 contacts → |
“We are global telecommunications provider of international voice, data, messaging and outsourcing services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 42com Telecommunication Gmbh42com.com HQ: Berlin, GermanyReported employees: 11-50 | Berlin, Germany | 11-50 | Exact match | 31 contacts → |
“Established in 2002, 42com Telecommunication GmbH started by designing a white-label VoIP platform.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | S-Kon Sales Kontor Hamburg AGsaleskontor.de HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 28 contacts → |
“S-KON Sales Kontor Hamburg AG is a telecommunications company based out of Germany.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Syno Consulting Group AGsyno.ag HQ: Hamburg, GermanyReported employees: 51-200 | Hamburg, Germany | 51-200 | Exact match | 26 contacts → |
“SYNO steht für Synergien.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Tele Thorwarth Gmbhtele-thorwarth.de HQ: Schmalkalden, GermanyReported employees: 51-200 | Schmalkalden, Germany | 51-200 | Exact match | 25 contacts → |
“Die TELE THORWARTH GmbH realisiert für Geschäftskunden aller Branchen professionelle und innovative Lösungen in der Telekommunikation mit den Schwerpunkten Mobil- und Festnetze…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Toplink Gmbhtoplink.de HQ: Darmstadt, GermanyReported employees: 11-50 | Darmstadt, Germany | 11-50 | Exact match | 24 contacts → |
“Cloud- und On-Premise-Lösungen - Technologie verwandelt Die toplink-Gruppe etwas genauer betrachtet: toplink GmbH - die Cloud Company Bereits 2005 vermarktet die toplink GmbH die…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Firstcom Europefirstcomeurope.de HQ: Goldbach, GermanyReported employees: 51-200 | Goldbach, Germany | 51-200 | Exact match | 21 contacts → |
“We offer advantages of modern telephone systems and cloud solutions as well as access to landline network and internet, all from one source.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: Börwang, GermanyReported employees: 51-200 | Börwang, Germany | 51-200 | Exact match | 21 contacts → |
“Die OFF Telekommunikation GmbH ist DER Partner für moderne Kommunikationslösungen.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Good Connected Gmbh & Co. KGgood-connected.de HQ: Herrsching Am Ammersee, GermanyReported employees: 11-50 | Herrsching Am Ammersee, Germany | 11-50 | Exact match | 20 contacts → |
“Wir sind speziell ausgebildete Dienstleister und Berater für Business-Telekommunikation.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Sit-Solutionssit-solutions.de HQ: Adelsdorf, GermanyReported employees: 11-50 | Adelsdorf, Germany | 11-50 | Exact match | 19 contacts → |
“Your experts in information technology.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Netcom Kassel Gesellschaft FÜR Telekommunikation MBHnetcom-kassel.de HQ: Kassel, GermanyReported employees: 51-200 | Kassel, Germany | 51-200 | Exact match | 18 contacts → |
“Seit der Gründung im Jahr 1997 hat sich die Netcom Kassel zu einem der wichtigsten Telekommunikationsunternehmen in Hessen entwickelt.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Bunsieck & Partner Gmbhbunsieck.com HQ: Greven, GermanyReported employees: 11-50 | Greven, Germany | 11-50 | Exact match | 16 contacts → |
“Wir verbinden Informationstechnologie und Telekommunikation Seit 1987 stehen wir als zuverlässiger Partner an der Seite unserer Kunden.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Schollmeier Telekommunikationschollmeier.de HQ: Mannheim, GermanyReported employees: 11-50 | Mannheim, Germany | 11-50 | Exact match | 16 contacts → |
“Schollmeier - Dein 360° Telekommunikationsanbieter.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Engy Solutionsengy.solutions HQ: Dortmund, GermanyReported employees: 11-50 | Dortmund, Germany | 11-50 | Exact match | 15 contacts → |
“eNgY SOLUTIONS is revolutionizing business communication.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Phonekom Business Communications AGphonekom.de HQ: Friedrichsdorf, GermanyReported employees: 11-50 | Friedrichsdorf, Germany | 11-50 | Exact match | 15 contacts → |
“WIR VERBINDEN BUSINESS TEAMS!” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 228 company matches
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Calling companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
224 records in the displayed employee bands.
4 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 228 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for calling companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many calling companies did RevenueBase find based in Germany?
The saved snapshot records 228 matching company records, 2,253 tracked contacts and 914 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 calling companies based in Germany. Snapshot: September 21, 2026. https://revenuebase.ai/companies/calling-companies/germany.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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