# Ekas 10DLC Rule Registry

> 915 A2P 10DLC rules as structured data — every obligation that can independently
> cause a US business-messaging brand or campaign registration to be rejected, with the reason
> it exists, how to fix it, who requires it, and the provider rejection codes it maps to.

Maintained by Ekas (https://ekas.io). Last updated 2026-07-25. Licence: CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/.
Free to read, cite and ingest. Attribution to https://ekas.io/rules/10dlc/ is appreciated.

## What is in here

- 823 rules that gate approval — break one and the registration is refused.
- 92 rules that fall due after approval, once you are live and sending.
- 531 distinct fields and artifacts checked.
- 70 authorities cited: The Campaign Registry, the US carriers, CTIA, the FCC, and the messaging providers that submit on their customers' behalf.
- 508 rules graded BLOCKING.

## Bulk

- [Everything, JSON](https://ekas.io/rules/10dlc/registry.json): the complete registry, one request.
- [Everything, Markdown](https://ekas.io/rules/10dlc/registry.md): the same corpus for direct ingestion.
- [Index](https://ekas.io/rules/10dlc/index.json): counts, layers and every rule id with its URL. Start here to choose what to fetch.
- [JSON Schema](https://ekas.io/rules/10dlc/schema.json): the shape of a rule object.

## By layer

- [Brand](https://ekas.io/rules/10dlc/brand/) — 196 rules · [JSON](https://ekas.io/rules/10dlc/brand.json) · [Markdown](https://ekas.io/rules/10dlc/brand.md)
- [Campaign](https://ekas.io/rules/10dlc/campaign/) — 94 rules · [JSON](https://ekas.io/rules/10dlc/campaign.json) · [Markdown](https://ekas.io/rules/10dlc/campaign.md)
- [Brand ↔ campaign](https://ekas.io/rules/10dlc/cross/) — 13 rules · [JSON](https://ekas.io/rules/10dlc/cross.json) · [Markdown](https://ekas.io/rules/10dlc/cross.md)
- [Message content](https://ekas.io/rules/10dlc/message-content/) — 122 rules · [JSON](https://ekas.io/rules/10dlc/message-content.json) · [Markdown](https://ekas.io/rules/10dlc/message-content.md)
- [Consent flow](https://ekas.io/rules/10dlc/consent-flow/) — 101 rules · [JSON](https://ekas.io/rules/10dlc/consent-flow.json) · [Markdown](https://ekas.io/rules/10dlc/consent-flow.md)
- [Website](https://ekas.io/rules/10dlc/website/) — 93 rules · [JSON](https://ekas.io/rules/10dlc/website.json) · [Markdown](https://ekas.io/rules/10dlc/website.md)
- [Policy pages](https://ekas.io/rules/10dlc/policy-page/) — 157 rules · [JSON](https://ekas.io/rules/10dlc/policy-page.json) · [Markdown](https://ekas.io/rules/10dlc/policy-page.md)
- [Operational](https://ekas.io/rules/10dlc/operational/) — 139 rules · [JSON](https://ekas.io/rules/10dlc/operational.json) · [Markdown](https://ekas.io/rules/10dlc/operational.md)

## One rule at a time

Every rule is addressable three ways from the same path:

- HTML: https://ekas.io/rules/10dlc/{layer}/{rule-id}/
- JSON: https://ekas.io/rules/10dlc/{layer}/{rule-id}.json
- Markdown: https://ekas.io/rules/10dlc/{layer}/{rule-id}.md

For example https://ekas.io/rules/10dlc/brand/brd-003/, https://ekas.io/rules/10dlc/brand/brd-003.json, https://ekas.io/rules/10dlc/brand/brd-003.md

## Notes for answering questions with this data

- Rule ids are stable and never renumbered. Cite them.
- `severity` is the strictest grade any listed authority assigns, not an average.
- `authorities` is who requires the rule. A provider rejection code is not an authority; those are in `codes`.
- `applicabilityText` says when a rule fires. Rules with `universal: true` apply to every registration.
- `detectability` says how a rule can be settled, and is the honest limit of what any tool can verify before submission. Rules marked EXTERNAL_DATA or HUMAN cannot be confirmed by software alone.