IFTAS

Updates to IFTAS Denylists and Access Options

At IFTAS, our mission is to equip Social Web moderators and administrators with the tools and data they need to keep their communities safe. To make managing moderation feeds easier, more flexible, and more accessible across various platforms, we have rolled out several updates to our Do Not Interact (DNI), Abandoned and Unmanaged Domain (AUD), and CARIAD denylists.

• All documentation pages have been updated to reflect the growing ecosystem of platforms that natively support, integrate, or offer IFTAS denylists as default options,
• While our legacy WordPress-hosted CSV files remain fully available for backwards compatibility, we are introducing direct-from-source downloads for all lists, and FIRES options where available,
• Machine-readable streams are best for automated scripts, moderation tools, and platform integrations. Human-friendly versions are browser download CSVs for manual imports.

Introducing the Omnibus File

Managing multiple lists can create unnecessary administrative overhead. To streamline access for operators who want comprehensive coverage, we’ve launched an Omnibus File. The Omnibus combines our DNI, AUD, and the CARIAD 51% consensus tier into a single list available in both machine-readable and human-friendly formats.

The Omnibus is available on the Denylist Resources library page.

Consuming Data with Pelago FIRES

Where available, we are now linking to Pelago FIRES as an option for consuming our denylist feeds. FIRES provides service administrators with a robust way to subscribe/automate list imports directly.

Granular CARIAD Consensus Tiers

As part of the CARIAD Domain Observatory transition, CARIAD is now available in three distinct consensus thresholds based on observed network domain blocks:

• 51% Consensus & Above (this also serves as the replacement for the legacy CARIAD feed)
• 66% Consensus & Above
• 80% Consensus & Above

Note for CARIAD users: The legacy CARIAD file (iftas-cariad-latest.csv) will be deprecated on September 30, 2026. Please update your automated jobs or subscriptions to point to the new consensus tier files or the Omnibus file as appropriate.

Learn More

You can explore the documentation, view platform integrations, preview the current lists, and access the new data feeds on the relevant library pages:

• IFTAS Do Not Interact (DNI) List
• IFTAS Abandoned and Unmanaged Domain (AUD) List
• IFTAS CARIAD Denylist

See all Denylist Resources

Deprecation Notice: CARIAD Domain Observatory Transition

The CARIAD Domain Observatory Web service (cariad.fedicheck.iftas.org) is being shut down. To ensure server administrators and moderation teams can retain access to reliable, consensus-driven moderation data, IFTAS is transitioning to a suite of downloadable and subscribable denylist files.

IFTAS is providing direct access to these lists in our Community Library: https://about.iftas.org/library/denylist-resources/#IFTAS_Domain_Denylist_Resources

Moving forward, you can select from tiered consensus levels based on observed blocking activity across the network, alongside the human-curated lists maintained by IFTAS:

• CARIAD Consensus Tiers: Available in 51%, 66%, and 80% agreement thresholds.
• Do Not Interact (DNI) List: Our human-reviewed list of high-risk domains strongly recommended for defederation.
• Abandoned & Unmanaged Domains (AUD) List: Curated list targeting dedicated spam services and unmoderated/abandoned instances.
• (New) Omnibus File: A single, comprehensive file that combines the 51% Consensus Tier, AUD, and DNI lists into one stream.

If you currently rely on automated scripts or tools pulling from cariad.fedicheck.iftas.org, please update your endpoints to point to the new resource files linked above. We don’t have a hard date for shutdown, but it will likely be by end of September 2026. To be clear, it is broken, you should stop using it as soon as you read this.

The Denylist Ecosystem

We want to acknowledge the broader community efforts pushing trust and safety forward:

• Emelia Smith’s FIRES for pioneering proactive moderation infrastructure,
• Oliphant’s Pelago service for continued leadership in federated denylist curation and accessibility,
• Denylist Maintainers who publish their lists in a wide range of formats,
• Platform Developers: We are deeply grateful for the ongoing work across various Fediverse platform teams to build native, automated, and streamlined methods for importing and managing trusted sources like IFTAS. Special shoutout to GoToSocial’s extremely well-thought-out implementation of automated list import, see https://docs.gotosocial.org/en/latest/admin/domain_permission_subscriptions/ for more.

Scalable Safety for an Expanding Fediverse

With the rapid explosion of new domains federating, the operational overhead for volunteer admins and moderation teams has scaled exponentially. Federating with a new domain means opening an untrusted door; doing so safely requires real-time insight, shared metadata, and reliable reputational signals that don’t rely on single points of failure.

We firmly believe that the future of the Social Web rests on consent-based federation, where server administrators and users retain explicit control over who they connect with, backed by actionable, transparent reputational data. IFTAS is working on reputation metrics/signals to help identify common markers when encountering a new domain. More to come, watch this space!

As the ecosystem matures, IFTAS remains committed to supporting sustainable moderation infrastructure, advancing shared signals, and empowering server operators with the tools needed to keep the Fediverse safe, resilient, and connected.

If you need assistance selecting the right tier or denylist for your server, reach out on network @iftas or email contact@iftas.org