In general, my focus is on clear reporting and preventing errors by simplicity.
Dedicated file owners and process owners are essential in order to be in control.
Table structure and documentation within the code are in english.

course administration
The administration of membership or courses within your association, that’s what I take care of.
The participants of a course receive e-mail about the status and payment write off.
Screenshots are available. In 2007 started use at Nivon Arnhem.

direct debit Excel tool for SEPA (Single Euro Payments Area)
SEPA required changes in each administration.
You may need a tool to convert from Excel.
Such a tool, ‘Pain files from Excel’, is written and documented in English.
The tool can easily be adjusted for use in any SEPA country.

Pain files from Excel
Documentation Pain files tool

The banks in the SEPA differ in their requirements.
In case you are interested, please send me a message by e-mail.

dog show application

some experience regarding

Testing both for IPv4 and IPv6, IPv6 preference in the Domain Name System (DNS) is reproducable.
I am using an external tool functioning like a IPv6 process.
This open proxy is a forwarding proxy server that is accessible by any internet user:

Articles about DNSSEC and other security techniques:
Quick check (in development):
Reliable server score:
Test email: –
– –
Test security:
Test mailserver:
DNS propagation: several tools can check refresh of domain set up around the world.

web domain registration
The dutch has changed rules for internet privacy of a .nl domain from March 1, 2016.
In case no business contact is associated, access to holder’s name is not required anymore.

Check html code:
or old html:


J.W. (Jan Willem) Stegink, Tivolilaan 183, 6824 BV  Arnhem, NL  (+31) (0)26 445 39 16
JWST, KvK 59953888

Updated: 2016-10-24