Have you already got a message “This message is your annual reminder that the contact data associated with your domain name must be accurate and up-to-date” which also says “… remember that under the Terms of our Agreement, the provision of false WhoIs information can be grounds for cancellation of your domain name registration.”? I did!
Most people don’t pay attention on the contact details they use when register domain names. Some even provide inaccurate information when registering web addresses – some of them try to hide their identity, others just do it without any particular reason, just like that. However any domain registrar may decide to temporarily suspend or even cancel any domains name if its WhoIs information does not comply with ICANN rules.
The Internet Corporation for Assigned Names and Numbers (ICANN) adopts a Whois Data Reminder Policy (WDRP) policy which requires domain registrants to at least once a year the contact information associated with their domain names and to make corrections when necessary. Domain registrars are required to formally remind their customers once a year to review and update their contact information. For detailed information about the adoption of the WDRP policy.
Some registrars take ICCAN’s rules very seriously and even suspend DNS services for some web addresses which has inaccurate information in the WhoIs. You can get your domain name temporarily suspended if there is a mistake in the ZIP code or difference between city physical address and State/Province.
So login to your domain of web hosting account and check the WhoIs details of your domain names. More about Whois Data Reminder Policy can be found at ICCAN’s website.