List of .io Zone Domains

What is a basic domain list, and how does it differ from a detailed dataset?

Both datasets include the same number of domains (for the .io zone there are currently 792,567 unique domain names).
A simple domain sheet contains _only_ a list of domains (one domain per line). The detailed dataset contains a set of additional fields, including DNS servers, IP, emails, phone numbers found on the corresponding domains/websites, etc. More information about the extended dataset file format can be found here.

Why don't you provide daily updates for the .io zone?

The .io domain zone is a country-code, and its domain registry (zone file) is inaccessible. However, since our search spiders crawl hundreds of millions of different domains every month, they find cross-references to .io domains on them. After various checks, the identified domain names are exported to the dataset. Thus, the majority of domain names in the .io zone are included in the dataset, but the dataset is not updated every day.

I need to set up a regular import of domain lists to my server. I don't want to download it manually every time. What should I do?

For the convenience of other developers, we have created a special and very convenient API, which allows you to download both any selected dataset individually and the total dataset of all domains at once. Read the full description of the API here.

The detailed dataset contains emails and phone numbers. Are they for every domain?

Please do not use our data for mass mailings. Of course, they can be used for targeted cold outreach, but only after careful filtering and when used within the law. We take emails and phone numbers from the websites of the respective dataset domains. Many sites do not have these data, so we do not guarantee that these data are present in the dataset for a particular domain.