Your Data Center's DNS Zone Check performs several tests on your zone (ie:domain) to ensure that it is correctly
configured and can be safely delegated, providing a certain quality to your domain (see the benefit section).

For detailed information on how to fill this form see the help section.

The time required to completely verify a zone can take from 10 seconds up to 5 minutes depending on the network speed of the server being accessed.
If execution takes more than a minute it generally means slow access to your nameservers (configuration error, firewall, ...) is occurring. Expect a timeout.

Zone information - Enter a Domain Name to Check Here



zone summary
test name explanations details
description progress bar nothing
Error report
don't stop on fatal fatal only report ok
Extra tests performed
mail delivery zone transfer RIR databases
Transport layer
IPv4 IPv6


Among the tests performed you can find checking for:



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 comma as the separator.
  • the form accepts 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 fix 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 accounts (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.


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