About this denylist

CARIAD is intended to provide new service providers a basic, first step in reflecting the domain blocking activity demonstrated by high volume, well-regarded service providers, as a means to observe the most widely-blocked domains. IFTAS Needs Assessment respondents; community members; and advisors have asked for a shared knowledge of the most commonly blocked domains. The CARIAD list reflects the observed domain blocks affecting roughly 50% of all Mastodon accounts.

As of September 2026, the CARIAD Domain Observatory reflects the blocks in place for 54.13% of all known Mastodon accounts.

Read the full policy specification.

Download / subscribe

Note: Because CARIAD is an observational aggregate of consensus reflecting the domains blocked by major Fediverse services, threads.net (Meta) is currently included on this list based on widespread community defederation.

If your server intends to federate with Threads, please ensure you review your local import settings to explicitly allow threads.net before applying the CARIAD denylist.

Local file download (Mastodon format)

• https://about.iftas.org/wp-content/uploads/2026/06/iftas-cariad-latest.csv

(The file path includes ‘/2026/06’ which will not change; the current version will overwrite any previous version at this URL)

DEPRECATION NOTICE: As of August 2026 we publish three files, listing domains that meet or exceed the 51%, 66%, 80% thresholds. The above file will be deprecated on September 30, 2026

Source files

Machine readable files are best for automation and streaming use cases, human-friendly will initiate a browser CSV download. In effect, the 51% file is the replacement for the deprecated CARIAD-latest file.

• 51% consensus and above Machine Readable, Human Friendly
• 66% consensus and above Machine Readable, Human Friendly
• 80% consensus and above Machine Readable, Human Friendly
• Omnibus (combines 51% along with our DNI and AUD lists) Machine Readable, Human Friendly

See Denylist Management Tools for third-party tools to import or implement this denylist.

Preview current CARIAD denylist

IFTAS CARIAD Denylist Output – HTML table view of this denylist

Bias

The inclusion criteria are a mix of North American, Western European, and East Asian service providers. This biases the list in favor of Western and Global North institutional norms, and as such should be used only by new service providers who are comfortable reflecting the aggregated views of Western and major-market service providers.

Additionally, the sources represent some of the largest service providers, who have generally favored preserving relationships over blocking speech and content, and therefore are less likely to take action against domains that others may consider worthy of blocking. Larger service providers are also less hesitant to block a small service with few accounts, which may lead to unintended aggregation of this bias.

Domain Inclusion Criteria

As new entries become eligible for inclusion, they are reviewed by IFTAS. If approved for inclusion, entries are listed with the majority recommendation.

The database and its associated lists is reviewed at least quarterly by IFTAS to ensure the criteria are working as intended, and not causing harm to any community.

Domain Exclusion Criteria

As and when domains fail to meet inclusion they will be delisted.

Appeals

• Requests must be submitted from an email address publicly listed on the service in question. If your service does not list an administrator email address, we cannot process your request.
• Email contact @ about.iftas.org in English.
• Include the domain name and a brief summary of the actions taken to address the initial reasons for inclusion.
• There is no fee for the review or removal of a domain from IFTAS lists.

Listing Longevity

As an observational list, all listings are observed and reported once approved for inclusion. Each individual listing will remain on the list for as long as a listing is visible on any of the sources and meets the requisite threshold.

Access

Access to the CARIAD list is free and available on this page. No payment is required for use of the list, nor for listing or delisting requests.

Public Feedback

Email [email protected]