Access to database files

This data feed subscription is licensed to you or your organization only, you may not resell or relicense the data without explicit written permission from Whois API, Inc. Any violation will be prosecuted to the fullest extent of the law.

Update time

The data feed is updated weekly. An update contains a full dump with one enriched record for every domain, plus a changes file listing the domains whose records were added or updated during that week.

The data feed includes the following files

Domain info files

• Data included: one enriched domain registration record per domain, combining WHOIS, RDAP, and historical WHOIS data — for active, expired, and deleted domains.
• Filename format: domain_info.%date%.weekly.jsonl.zst
• Sample: domain_info.sample.weekly.jsonl.zst

Domain names files

• Data included: the full list of domain names covered by the data feed, without their registration records.
• Filename format: domain_names.%date%.weekly.csv.zst
• Filename example: domain_names.2026-07-13.weekly.csv.zst
• Sample: domain_names.sample.weekly.csv.zst

Weekly changes files

• Data included: only domains whose records were added or updated during the week.
• Filename format: domain_info.%date%.weekly.diff.jsonl.zst
• Filename example: domain_info.2026-07-13.weekly.diff.jsonl.zst
• Sample: domain_info.sample.weekly.diff.jsonl.zst

The file formats are described in detail on the Output format page.

Typical file sizes

The data files are compressed; uncompressed they are several times larger, which is why streaming rather than decompressing to disk is the recommended way to read them.

How to download the datafeed files

Recommended decompression tool

The data feed files are compressed with zstd (Zstandard). Use zstd -d (or unzstd) to decompress them. Zstandard offers significantly faster decompression than gzip-based tools, which matters when working with full weekly dumps.

zstdcat domain_info.2026-07-13.weekly.jsonl.zst | head   # stream, no temp file
unzstd domain_info.2026-07-13.weekly.jsonl.zst           # decompress to a file

Downloading via HTTPS

• Base path: https://download.whoisxmlapi.com/datafeeds/
• Username and password: equal to your personal API Key which you can obtain from the My Products page.
• Folder: Domain_Info_Data_Feed

Note: if the IP allowlist is enabled in your account settings, HTTPS downloads are accepted only from the listed IP addresses; other requests are rejected with 403 "Your IP address is not on the allowlist".

Downloading via FTP

• Host: datafeeds.whoisxmlapi.com
• Port: 21210
• Username: 'user'
• Password: equal to your personal API Key which you can obtain from the My Products page.
• Base path: ftp://datafeeds.whoisxmlapi.com:21210
• Folder: Domain_Info_Data_Feed

Note: if the IP allowlist is enabled in your account settings, it applies to data feed downloads as well as to API calls: FTP, FTPS and HTTPS requests from IP addresses that are not on the list are rejected with 403 "Your IP address is not on the allowlist". Add the IP addresses of every machine that downloads the data feeds before enabling it.

Downloading via FTPS

Read more about the FTPS connection: https://en.wikipedia.org/wiki/FTPS.

Our FTP server supports explicit FTP over TLS encryption. You may configure your FTP client to use explicit FTP over TLS encryption for secure communications.

Our FTPS server is accessed using the same paths and API keys as a regular FTP server, the instructions for which are described above. To connect via FTPS, select the "Require explicit FTP over TLS" encryption option in your FTP client, if it supports it. FileZilla configuration example: