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Instantly download latest and historical zonefiles and domain lists for all domain zones worldwide. Download over 381M registered domain names across 1,582 domain zones, updated daily. New and expired domains feeds daily.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Which is more popular?
Based on our record, AllZonefiles.io seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | allzonefiles.io | diffyn.com |
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| Company | Startup from the United States · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


AllZonefiles is a domain data platform providing access to large-scale domain datasets across gTLDs and ccTLDs. It helps cybersecurity teams, domain investors, SEO professionals, researchers, developers, and data companies work with domain registration data without collecting and processing...
No description of Diffyn yet.
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of AllZonefiles.io yet.
Overall verdict
Why this product is good
Recommended for
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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing AllZonefiles.io and Diffyn.
AllZonefiles.io's answer
AllZonefiles.io brings together large-scale domain datasets from hundreds of gTLDs and ccTLDs in one place. Instead of dealing with many registries, access systems, formats, and update schedules, users can download normalized domain data from a single source.
Its key differentiator is breadth: AllZonefiles.io combines current and historical zone files, newly registered and expired domains, and enriched domain metadata covering 380M+ domains across more than 1,580 TLD zones.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
AllZonefiles.io's answer
AllZonefiles.io is designed for users who need domain data at scale without building and maintaining their own collection infrastructure.
Compared with services focused mainly on ICANN gTLD zone files, AllZonefiles.io also provides extensive ccTLD coverage, historical datasets, daily domain changes, and enriched domain information.
It is especially useful for teams that want ready-to-use bulk data for cybersecurity, SEO, domain investing, research, analytics, and data products.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
AllZonefiles.io's answer
AllZonefiles.io is built primarily with Go, PostgreSQL, Linux, Docker, Nginx, and cloud/object-storage infrastructure.
The platform also uses custom data-processing pipelines for downloading, parsing, normalizing, comparing, and storing very large domain datasets and zone files.
The architecture is designed around efficient processing of hundreds of millions of domain records and frequent dataset updates.
Diffyn's answer:
React, Next.js, POSTGRESQL
AllZonefiles.io's answer
The primary audience includes cybersecurity professionals, threat intelligence teams, domain investors, SEO specialists, researchers, developers, data engineers, and companies building products based on domain intelligence.
Typical users need to analyze millions of domains, detect newly registered or expired domains, study TLD markets, monitor domain activity, or enrich their own datasets and applications.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
AllZonefiles.io's answer
AllZonefiles.io started from a simple problem: obtaining comprehensive domain data is surprisingly difficult.
Domain information is distributed across ICANN CZDS, individual registries, ccTLD operators, public datasets, and other sources, each with different formats and access requirements.
AllZonefiles.io was created to aggregate, normalize, store, and continuously update this data so developers and analysts can focus on using domain data instead of building infrastructure to collect it.
The project has since grown into a large domain data platform covering hundreds of millions of domains and more than 1,500 TLD zones.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
AllZonefiles.io's answer
AllZonefiles.io is used by customers working in:
Share your experience with using AllZonefiles.io and Diffyn. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Https://allzonefiles.io Bulk domain name datasets available for instant downloads, hassle-free (without submitting any application forms, waiting for approvals, etc, etc). 383M registered domain names across 1582 domain zones. Updated... - Source: Hacker News / 21 days ago
Tracking Diffyn since Jun 2025.
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Our mission is to give everyone a voice and show them the world.
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