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Cobytes

Scans a domain's DNS, email authentication and web security records, reporting failing checks with readable fix guidance.

SecuritySecurityAPIFree tier
intodns.ai ↗XGitHubLinkedIn
At a glanceswept 2026-10-12

≈ 97visits/mo

Little sign of use · estimate, read 2026-10-12

For
Developers, sysadmins and security-conscious teams checking a domain's DNS and email security
Price
Freepricing page, read 2026-10-13 ↗
Activity
Maintainedrelease 5 years ago · site updated 3 weeks ago
Company
Cobytes B.V. · since 2024privacy policy · per their site
Runs as
API
AlternativesSet it up for my teamIs Cobytes yours? Claim the card →
What people do with itread off intodns.ai on 2026-10-13
  • Check SPF, DKIM and DMARC records for a domain
  • Find why a domain's email lands in spam
  • Verify DNSSEC and blacklist status for a domain
The companyeach fact with its source · read 2026-10-13
Your datawhat they publish, each line with its page · read 2026-10-13

These are Cobytes's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read 2026-10-13

MCP server details →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Securityby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

All Security tools →

Questions this page answers
  • What is Cobytes?

    Scans a domain's DNS, email authentication and web security records, reporting failing checks with readable fix guidance. It is listed in the Atlas under Security and made by Cobytes B.V.

  • Who is Cobytes for?

    Developers, sysadmins and security-conscious teams checking a domain's DNS and email security

  • How much does Cobytes cost?

    Cobytes is free, per its pricing page on 2026-10-13.

  • Is Cobytes free?

    Yes: Cobytes is free, per its pricing page on 2026-10-13.

  • Do people use Cobytes?

    Little sign of use: ≈ 97 visits/mo · estimate, 2026-10.

  • Is Cobytes still maintained?

    Maintained: release 5 years ago · site updated 3 weeks ago.

  • Who owns Cobytes?

    Cobytes is run by Cobytes B.V., per its privacy policy (2026-10-13).

  • What are alternatives to Cobytes?

    In Security, by use: URLert, S4E, DomainScan AI, URL Scanner Online (Aprensec), UNPWNED, Scan My Shadow.

Not quite it? Describe the job

beta

Five tools from the Atlas that fit it, each judged against what you wrote.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.