List of Domains Using Key-Systems (verification hold) DNS

Key-Systems (verification hold) DNS Domain Datasets

Download a domain name list or full dataset of domains using Key-Systems (verification hold) nameservers (*.emailverification.info).

DNS Provider: Key-Systems (verification hold)

Nameserver pattern: *.emailverification.info

Update frequency: daily

Last updated: September 6, 2026

Domains included in datasets: 91,923

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

Dataset type
choose a type		 Last updated
next update: tomorrow 		Total domains
as of last update		 Emails
crawled from websites 		Phones
crawled from websites
Basic DNS Domain List September 6, 2026 91,923 --- --- Download GET
Detailed DNS Domain Dataset September 6, 2026 91,923 YES YES Download GET

Frequently Asked Questions

See our FAQ for more answers.

Can I download sample files?

Yes. Download a sample domain list or a sample detailed dataset.

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

Both cover the same 91,923 domains using Key-Systems (verification hold) nameservers. A basic list is one domain name per line in a gzip CSV. A detailed dataset adds DNS servers, server IP, hostname, emails, phone numbers, and more. See the dataset format details.

How do I automate daily downloads?

Schedule automatic downloads through the API. See the API documentation for authentication and endpoints.

Are emails and phone numbers available for every domain?

No. We collect contact details from public websites when available. Many domains have no published email or phone, and we do not guarantee these fields on every row. Do not use the data for unsolicited bulk outreach.

Questions? See our FAQ or contact us.

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