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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesSecurity ServicesZurichMaster Key, Claudio De Maio
Master Key, Claudio De Maio Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Master Key, Claudio De Maio is a locksmith and security service provider offering emergency locksmith services, key and cylinder ordering, and door and lock repairs. Services also include lock-system planning (master-key systems), access control, security consulting and post-burglary emergency interventions.

AI-generated
Offering

Products & services

Industry:Security Services
✓ Offered7
24/7 locksmith service
Emergency locksmith service in Zurich and the surrounding area, available around the clock; quick help with opening doors, being locked in or out, and short-notice on-site deployments.
Key and cylinder ordering
Ordering and delivery of keys and cylinders, including series and locking-system cylinders; on request, delivery to the desired address or professional installation.
Door and lock repairs
Repair or replacement of defective locks and locking systems; installation of additional locking systems as well as repairs and reinstallation of multi-point locking systems.
Emergency service after break-in damage
Immediate measures and repairs after a break-in or attempted break-in; on request, a brief statement for the insurer as well as professional support for insurance companies.
Locking system planning
Planning of mechanical and mechatronic locking systems; alignment with the intended use, inclusion of additional users, and design of special structural systems.
Access control
Solutions for managing access and locking, with time- or location-restricted authorizations and clear organization for multiple keys and users.
Security consulting
Free security concept tailored to needs, including advice on locking systems and protective measures; by phone, in the showroom or on site.
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4.1/5

Master Key, Claudio De Maio

Trust & reputation

ranQ Trust Score of Master Key, Claudio De Maio: 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.

Master Key, Claudio De Maio 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%
Master Key, Claudio De Maio scores 78.5 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.100.012%
  • 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%
Master Key, Claudio De Maio scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Master Key, Claudio De Maio scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Master Key, Claudio De Maio 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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Secure profile

Location

Berninaplatz 1
8057 Zurich

At a glance

Legal form
Sole proprietorship
UID
CHE-106.111.383
Founded
1994 · 32 years
Last commercial register change
May 12, 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.
67.0
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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