zonefiles.io was for years the reference source for daily lists of registered domain names across every top-level domain. The service no longer exists – but its author does, and NetAPI is the project he built to replace it. This page tells the story and shows what NetAPI offers today.
zonefiles.io was created in 2016 by the same person who runs NetAPI. It was one of the first services to sell complete, daily updated lists of registered domain names – per-zone files, new-domain deltas and detailed datasets with DNS, IP and contact data. In 2017 the project was sold to a large corporation, which operated it for several years.
In 2025 the corporation decided that zonefiles.io was outside its core business and closed the service. Its customers were left without a daily source of domain lists, and the original author started over – not as a copy of the old site, but as a new platform designed around the lessons of the first one.
The result is NetAPI: the same daily coverage of gTLD and ccTLD zones, built on a new data pipeline with richer per-domain datasets, registrar and registration/expiration dates taken directly from registry RDAP, DNS-provider and registrar-grouped lists, domain and reverse IP lookup, an API, and a free tier (Top 1M, compromised domains and IPs, abuse research) published under an open license. If you used zonefiles.io, NetAPI is its direct successor.
| NetAPI | |
|---|---|
| Domain zones covered | 1,584 TLDs (gTLD + ccTLD), the same daily coverage zonefiles.io was known for |
| Domains in the database | 460,900,044 domains |
| Update frequency | Every day; new-domain deltas for the last 24 hours on every daily-updated zone |
| Plain domain lists | Per zone and all-zones bundles, one domain per line, CSV / gzip – the zonefiles.io format |
| Enriched datasets (per domain) | DNS servers, IP, hostname, IP country, email addresses, phone numbers, Majestic rank, registrar, registration and expiration dates |
| Registrar / WHOIS data | Registrar-grouped WHOIS datasets with registration and expiration dates from registry RDAP – not available on zonefiles.io |
| DNS-provider lists | Domains grouped by authoritative DNS provider (Cloudflare, Route 53, GoDaddy, etc.) |
| Free datasets | Top 1M most popular websites, compromised domains and compromised IPs, TLD and registrar abuse reports – no registration |
| Open license for free data | Creative Commons Attribution 4.0: reuse, share and redistribute with attribution |
| Domain / IP lookup | Domain lookup and reverse IP lookup, on the web and via API |
| API | REST API v2 with token: lists, datasets, DNS and registrar files, lookup, compromised feeds; also on RapidAPI |
| Legal entity and transparency | CodeRockers LTD (Cyprus) – registered company with a published address, Terms of Service and Privacy Policy; public crawler page |
Everything zonefiles.io customers relied on is here – daily lists for 1,584 zones, new-domain deltas, per-zone and all-zones bundles, CSV/gzip files and an API – plus what the old service never had: registrar and WHOIS data with dates verified against registry RDAP, registrar-grouped WHOIS datasets, DNS-provider lists, domain and reverse IP lookup, abuse research reports and a free, openly licensed data tier: the Top 1M website ranking, the compromised domains and compromised IPs feeds under CC BY 4.0. The database holds 460,900,044 domains, and every zone page shows exactly when its data was last refreshed.
No. The service was closed by its corporate owner in 2025 and the website no longer provides domain lists or datasets. NetAPI, built by the original author of zonefiles.io, is its successor.
Not the same company – the same author. NetAPI is operated by CodeRockers LTD, the company of the original creator of zonefiles.io, and was launched after the corporation that owned zonefiles.io shut it down.
Yes. NetAPI publishes daily lists of active and newly registered domains for every TLD in the same one-domain-per-line CSV/gzip format, per zone or as all-zones bundles, and an API for automated downloads. The detailed datasets contain more fields than the zonefiles.io ones.
Registration and expiration dates and registrar data verified against registry RDAP, registrar- and DNS-provider-grouped datasets, domain and reverse IP lookup, daily abuse research reports, and a free tier – Top 1M, compromised domains and IPs – under an open CC BY 4.0 license. Every zone page shows when its data was last refreshed.
Sign up, copy the API token from the dashboard and replace the download URLs with the NetAPI endpoints described in the API documentation. Plain domain lists are fully compatible (CSV, one domain per line, gzip), so existing parsers need no changes. The detailed datasets keep the same idea – one domain per row with its attributes – but the column set is richer and slightly different, so importers of the enriched files need light adjustments to the field mapping.
Yes. The Top 1M ranking, the compromised domains and compromised IPs feeds and the research reports are free and need no registration, and sample files are available on every zone page.
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