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Form.
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Form

Zone Information
Zone	The domain (ie: zone) that should be tested (ie: the domain name that you want to register).
Primary	The nameserver that is considered as primary (the one in the SOA record if it is public).
Secondary	The secondary nameservers (all the NS records associated with the zone, except for the one listed above).
IPs	List of IP addresses associated with the nameserver. they are only required if they can't be resolved (ie: they are in the zone that you want to register). if you have several addresses you must use a space or a coma as the separator. the form accept IPv4 and IPv6 addresses.
Options: Output
zone summary	Includes a summary about the zone and its nameservers in the generated report
test name	Includes the name of the test that has been performed when reporting errors
explanations	Includes an explanation (when the test failed) about the purpose of the test and why you should fixed it.
details	Includes details (when the test failed) about the culprit elements.
progress bar	Display information about the test progression using a a progress bar (require javascript and Mozilla or IE5+ for correct rendering).
description	Give a short description of the test when it is performed.
nothing	Don't display information about the test progression.
report	Select the type of generated report you want.
format	Select the format in which you want the report (HTML or plain text).
language	Select the language that you want the report generated in.
Options: Error report
default error	Errors are reported with the default severity associated with them.
all fatals	All errors are considered fatals.
all warnings	All errors are considered warnings.
don't stop on fatal	Keep going even after encountering a fatal error (this could lead to some unexpected results).
report ok	Report test that passed.
Options: Extra tests performed
mail delivery	Perform extra checking on mail delivery for typical mail account (hostmaster, postmaster, ...) associated with domain names.
zone transfer	Perform additional tests on the zone retrieved after a zone transfer.
RIR databases	Check that IP addresses used are registered in the RIR databases
Options: Transport layer
IPv4, IPv6	Select the routing layer (if none are selected it will default to IPv4 and IPv6).
STD, UDP, TCP	Select the transport layer you want for interrogating your nameservers.

Results

The word generic means that the error is eitheir unrelated or present on all nameservers,
when an error is between [brackets], this means that the test failed for external reason, this reason is displayed next to it.