List of Domains Registered with

(Dynu Systems Incorporated) WHOIS Datasets

Registrar (legal entity): Dynu Systems Incorporated

Official brand name:

Update frequency: daily (last updated December 4, 2025)

Registered domains included in datasets: 7,891

Datasets available:
Basic Domain List (download sample 💾)
Detailed WHOIS Dataset (download sample 💾)

Dataset type choose your desired type	Last updated next update: today	Total domains for last 24h	Emails crawled from websites	Phones crawled from websites
Basic Domain List	December 4, 2025	7,891	---	---	Download GET
Extended WHOIS Dataset	December 4, 2025	7,891	YES	YES	Download GET

Looking for more details? Check out our full FAQ →

Can I download sample datasets?

Absolutely! Click here to download a sample list or here to download a sample detailed dataset.

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 registrar there are currently 7,891 unique domain names).
A basic domain list contains _only_ a list of domains (one domain per line). The detailed WHOIS dataset includes additional fields such as registration and expiration dates, IP addresses, country codes, emails, phone numbers found on the corresponding domains or websites, and more. More information about the extended dataset file format can be found here.

I need to regularly import domain lists to my server. I don't want to download them manually every time. What should I do?

We’ve built a developer-friendly API that lets you download any specific dataset automatically. Read the full API documentation here.

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

Please do not use our data for mass emailing. You may use it for targeted, lawful outreach after proper filtering. We extract emails and phone numbers from the websites of the respective domains. Since many websites do not publish this data, we cannot guarantee that every domain in the dataset includes it.