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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement ConsultingWinterthurA357 GmbH
A357 GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of A357 GmbH encompasses consulting and supporting telecommunications and cable network operators in planning, introducing and commissioning new network infrastructures and technologies. This includes developing business and investment cases, creating business field strategies, leading complex projects, tendering and contract design of IT solutions, as well as process automation.

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Offering

Products & services

Industry:Management ConsultingTechnical Consulting & Engineering
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A357 GmbH

IT Consulting & Services
✓ Offered8
Business model development and value contribution calculations
Develop business models, formulate value contributions and map the financial framework conditions so that business benefits are ensured in the long term.
Product development and introduction
Support product and service development, manage the concept and implementation phases and assist projects up to their introduction.
Process management
Define, model, optimise and automate business activities and workflows; simplify provisioning processes, capacity and monitoring and optimise costs.
Contract drafting, procurement and supplier management
Draft service contracts, manage suppliers in multi-provider environments and support strategic partner management.
Process analysis
Make current processes transparent, identify weaknesses and irregularities and uncover the causes; provide recommendations for process and product optimisation.
Portfolio adjustments
Adjust product and service portfolios to new conditions, accompany the sale or termination of business activities and support migration as well as phase-out projects.
Project management
Support projects with proven methods and specialist expertise so that objectives are achieved on time, within budget and successfully.
Representation of TNO in Switzerland
Represent TNO in Switzerland and provide access to applied research and innovation services of the Dutch organisation.
Trust & reputation

ranQ Trust Score of A357 GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

A357 GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
A357 GmbH scores 79.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.92.512%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
A357 GmbH scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
A357 GmbH scores 2.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.2.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A357 GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Zwinglistrasse 37
8400 Winterthur

At a glance

Legal form
Limited Liability Company
UID
CHE-248.374.279
Founded
2014 · 12 years
Last commercial register change
July 25, 2025
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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