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NZB.su Review (2025) – NZB Indexer with API Support

nzb.su
Website: nzb.su

NZB.su is a private NZB indexer that has built a reputation over the years for stability, automation support, and a user-friendly interface. Designed for both manual browsing and full API automation, NZB.su integrates easily with tools like Sonarr, Radarr, and NZBHydra2. While it isn’t the most advanced search engine available and has some indexing limitations, it remains a practical option for Usenet users.

If you’re new to the scene, our Beginner’s Guide to Getting Started with Usenet explains how indexers like NZBCat fit into a complete Usenet setup.

Domain Update Notice

NZB.su is transitioning to a new domain. Moving forward, users should access the site at https://NZB.life, and configure automation clients (e.g., Sonarr, Radarr, NZBGet, SABnzbd) to use api.nzb.life. The .su domain is being deprecated and may eventually go offline.

Key Overview

Large NZB Archive (with Limits)

NZB.su indexes a wide range of newsgroups and offers solid article coverage, though the archive currently goes back just over 2.3 years. For users primarily interested in newer posts, this may be sufficient, but it’s notably shorter than top-tier indexers offering significantly more depth.

Functional Search Engine

The built-in search engine is responsive and offers helpful dropdown sorting sections as well as name, size, and age filters, among others, to help refine results. However, it lacks the advanced logic features found in some smarter Usenet search engines.

API Access and Automation Support

NZB.su supports full API access and works seamlessly with popular automation tools like Sonarr, Radarr, Lidarr, NZBHydra2, as well as popular download clients like SABnzbd and NZBGet. 

Clean and Functional Interface

The interface is simple and responsive, focused more on performance than appearance. It’s easy to navigate and provides quick access to NZBs through browsing or direct search.

Long-Term Uptime

As one of the older NZB indexers still in operation, NZB.su offers consistent uptime and reliability. It has a reasonably active user base and has proven dependable for long-term use.

Benefits of NZB.su

  1. Good NZB Coverage: NZB.su provides access to a good range of NZB’s across various newsgroups, making it a versatile NZB indexing tool for users looking for recent NZBs. 
  2. Fast Search Engine: The search engine on NZB.su is a great feature, and is fast. With dropdowns, filters and sorting options, you can narrow down searches to save time and effort.
  3. API Integration for Automation: For power users, NZB.su offers API access, which can be used to automate through apps like Sonarr and Radarr. This integration allows users to set up their system for automatic processing
  4. Community Support: NZB.su has a decent sized community of users who contribute and help keep the indexer updated and active.
  5. Uptime: The site is consistently available and well-maintained.

Drawbacks of NZB.su

  1. Indexing Limited to ~2.3 Years: While the database is regularly updated, the historical depth is short compared to other indexers that go back 5+ years. This prohibits access to older or middle-aged articles, even with a Usenet provider that supports longer article retention.
  2. Limited Free Access: While NZB.su does offer a free tier, it is limited in terms of searches and NZB grabs (5 free NZBs per day). For those who use Usenet frequently, the free version may not provide enough features or access. The paid membership offers much more in terms of functionality, but it comes at a cost.
  3. Not a Full NZB Solution: NZB.su is just an indexer, so users still need to pair it with a reliable Usenet provider and a download client to complete the process. If you don’t have a good Usenet provider, you may encounter issues with low completion rates or slow transfers.

Pairing NZB.su with a Usenet Provider

NZB.su is just one part of a complete Usenet setup. To make full use of its automation support and indexing capabilities, it should be paired with a high-quality Usenet provider that offers strong retention, fast speeds, and reliable completion. Without that, even the best NZB indexer can lead to failed Usenet transfers.

Recommended Usenet Provider for NZB.su

To get the most out of NZB.su, we recommend using it alongside a Tier-1 provider like Newshosting. With the longest article retention, fastest speeds, and highest completion, Newshosting is built to complement automation-friendly indexers like NZB.su

📌Exclusive Offer: Get 70% off plus 3 FREE months

Whether you’re running Sonarr, Radarr, or NZBHydra2, Newshosting helps maximize NZB.su’s potential by delivering high-speed, complete Usenet access.

Final Verdict

NZB.su is a reliable, automation-friendly NZB indexer that’s well-suited for experienced Usenet users. It combines fast search performance, a highly customizable interface, and seamless integration with the most popular tools in the Usenet ecosystem. While access may be gated by an invite system, NZB.su is a solid choice for dependable NZB indexing and API automation.

If you’re comparing private NZB indexers, or trying to decide which one best suits your setup, be sure to check out our Best NZB Indexers for Usenet article for a full breakdown of top choices and how they stack up.

✅ Longest Retention
Access more NZBs

✅ Highest Completion
Fewer failed downloads

✅ Tier-1 Backbone
Fastest speeds and top reliability