ARES is the Czech Ministry of Finance information system that brings together data on economic subjects held in other registers, including the public register kept by the courts, the trade licensing register and the statistical register. It resolves a Czech entity to its identification number and shows what each source register records, without constituting any of that data itself.
Domain Rating is a dated Ahrefs snapshot of domain authority. PetroHrys Score is an independent editorial assessment of the directory’s practical business value. They are separate measurements and are never combined. Domain Rating values are dated historical Ahrefs snapshots. Domain Rating is a dated historical measurement of the shared domain, not an assessment of this individual registry page. New measurements are not collected because the Research Center does not depend on mandatory authenticated APIs. Where several registries are published on one measured domain they repeat that domain’s single dated snapshot rather than each carrying a figure of its own. Domain Rating is a third-party metric produced by their respective providers, not by PetroHrys.com. Each recorded value carries its provider and the date it was measured, and describes the domain that was measured rather than one page on it. No source has been consulted for authority score, estimated traffic and referring domains, so they are not published for any record.
Open The web application is client-rendered, but its public REST interface returned entity records anonymously without any credential, which is how free account-free access was established rather than inferred from the landing page.
One lookup reaches data from several Czech registers that are otherwise consulted separately.
The public interface is free and needs no account, and machine access returns structured records.
It is operated by the Ministry of Finance rather than by a commercial aggregator, so the assembly is a government service.
Limitations
ARES constitutes nothing. Every fact it displays is constituted in another register held by another body, and a legal question belongs to that register rather than to ARES.
Because it assembles data from several sources, a discrepancy is resolved against the originating register, not against this system.
The application renders client-side, so its interactive behaviour, any CAPTCHA and any rate limiting were not observed directly.
Submission guidance
Records are created through incorporation, registration, filing, or statutory processes.
Submission difficulty
Unknown
Typical listing quality
High
Typical approval time
Unknown
Review process
Unknown
Best for
Resolving a Czech business name or identification number and seeing at a glance which source registers hold data on it.
A first lookup before going to the register that actually constitutes the fact you need.
Not recommended for
Use as the legal source of record, which remains the public register kept by the courts, the trade licensing register or whichever register constitutes the specific fact.
Obtaining a certified extract, which is issued by the constituting register rather than by this system.
Preparation checklist
No checklist recorded yet.
Common mistakes
No common mistakes recorded yet.
Establishing required submission assets requires submitting a listing and observing the result. That has not been done for any directory in this dataset, so it is not published rather than estimated.
What this directory accepts
Startups
Yes
SaaS products
Unknown
Enterprises
Yes
Agencies
Unknown
Freelancers
Unknown
Local businesses
Yes
Developer tools
Unknown
Open-source projects
Unknown
Non-profits
Yes
AI products
Unknown
Mobile apps
Unknown
Ecommerce stores
Unknown
Recommended industries
Economic subjects recorded in Czech public registers
How the PetroHrys Score was reached
Editorial trust 15%
9 / 10How far the entries a directory publishes can be relied on as accurate.
Business usefulness 15%
9 / 10How much practical use a listing there is to the business being listed.
Verification quality 12%
7 / 10How thoroughly the directory establishes that an entry is genuine before publishing it.
Platform reputation 10%
8 / 10How the platform is regarded in its field. Deliberately not a popularity, traffic or recognition measure.
Spam resistance 10%
10 / 10How well the directory keeps low-quality and promotional entries out.
Industry importance 10%
8 / 10How central the directory is to its sector, independently of how useful one listing is.
Long-term stability 10%
9 / 10How likely the directory is to still exist, and to still carry the entry, years from now.
Submission quality 8%
5 / 10What the submission process asks for and how workable it is for the business submitting.
Transparency 5%
8 / 10How openly the directory states its rules, costs and criteria.
Moderation quality 5%
7 / 10How the directory maintains entries after publication.
The PetroHrys Score is a first-party editorial assessment, not a third-party
authority metric. It is the weighted sum of the ten factors above, divided by ten, so the number
on this page is reproducible from the values shown. Each factor is scored from 0 to 10 by a human reviewer and weighted as shown. The definitions describe what was weighed, not a rubric: no threshold or formula maps a directory onto a value, and two reviewers could reach different numbers. The score is reproducible from the factors shown on every record, but it is an editorial judgement, not a measurement.