Together, a project always gets better.
Therefore, do you have a suggestion for improvement or even want to help with the code?

Then take a look at the Github page:

Changelog

### 04.2025.5

- OpenSearch is now supported

### 04.2025.4

- Added to dnscheck that authoritative nameservers are marked accordingly.
- Fix whois check for subdomains
- Fix rdns/ptr check for subdomains
- The checking of differences between entries between nameservers has been added again.

### 04.2025.3

- Release of the new version

### 04.2025.2-dev

- Revised rDNS (ipv4 only)

### 04.2025.1-dev

- Improvements for spf check
- Mobile style

### 04.2025.0-dev

- Buttons on the start page are now the same size as the search bar.
- Optimized display of the DNS check.

Whois reworked:

- Quick information are removed (temporary)
The reason for this is that this has only worked for a few tlds so far.
This should therefore be corrected and then reintegrated.
- Collapse are removed. For a more clean look.
- Whois now uses whois -h instead of whois to provide more accurate information.

### 10.2024.0-dev

This version contains major changes to the last version.

- Revised navigation bar. Optimized for smaller screens.
- nslookup and dig to DNS Check merged.
- DNS check is again the default search
- DNS-Check has been completely rewritten and some bugs have been fixed.
- Individual checks can be deactivated in config.php.
- Provider Check has been added. Currently only netcup webhostings are supported.
- Health Check has been removed.
- Pagetitle is now the title in the tab

### 03.2024.2

- Page title configuration added

### 03.2024.1

- nslookup: MX Records priority and destination separated
- nslookup: DNS type explanation has been added.
- dig: Support for the following DNS records added: CNAME, OPENPGPKEY, SSHFP

### 01.2024.2

- Add DNSSEC (Partial)
- Add DNSSEC in Healthcheck

### 01.2024.1

- Error in nslookup fixed
- Fixed bug that idn domains did not work in dig

### 12.2023.1

- dig inplemented

### 09.2023.1

- Add IDN to Puny Converter as Standalone Tool.
- Add IDN to Puny Converter for nslookup, healthcheck, whois
- Add Changelog in footer

### 09.2023.0

- The name servers can now be customized.
nameserverlist.yaml
- Under nslookup, the domains and the IP addresses of the checked name servers are now displayed.
- Authoritative nameservers and custom nameservers have been visually separated under nslookup.
- A see what is newly added.
- Update already avaible featueres on startpage.
- Update ToDo on startpage.
- Add a Changelog
- Add new colors for: background, navbar, footer, dropdown menu, searchbar

### 07.2023.1

- Add Health Check Tool as new default

### 07.2023.0

- Bugfix for whois
- Bugfix for modal-content dark-Mode

### 04.2023.1

- New navbar that works better across devices.

### 04.2023.0

- Standalone rDNS/PTR check

### 03.2023.1

- Add Quick Informmations to whois

### 03.2023.0

- First release from own nslookup
- First release from own whois

### 01.2023.0

- First release