# Defense Contractors Compare CMMC Assessors

An independent directory lists 47 firms offering CMMC assessment or consulting services and ranks Ace of Cloud first. The directory identifies several firms as C3PAOs or RPOs but states that listed credentials are firm-reported and may change; this is a provider-discovery resource, not a DoD solicitation or contract award. Contractors evaluating CMMC support should verify current authorization and status directly through the Cyber AB Marketplace before selecting a provider.

- The directory names Ace of Cloud, CohnReznick, 112Cyber, 123 CMMC, and A-LIGN among the listed firms, with firm-stated C3PAO and/or RPO roles.
- For procurement and supplier-readiness planning, distinguish independent rankings from official credential verification; confirm the provider’s current status and the services it is authorized to perform.
- This signal identifies a provider market for contractors seeking CMMC assessment or consulting support, but it does not announce a government buying opportunity or specify a solicitation, contract value, or deadline.

**Jurisdictions:** federal
**Industries:** Defense & Military
**Topics:** Cybersecurity
**Published:** October 28, 2026

### Government Entities
- U.S. Department of Defense (DoD)

### Vendors
- Ace of Cloud (Firm-stated C3PAO and RPO; ranked first in the directory)
- CohnReznick (Firm-stated C3PAO)
- 112Cyber (Firm-stated C3PAO)
- 123 CMMC (Firm-stated C3PAO)
- A-LIGN (Firm-stated C3PAO)

### Sources
- [47 Top CMMC assessor /CMMC consultants are on Top list live.
This is the most trustable CMMC directory of USA. This week Ace of Cloud is winning
https://t.co/Bo7Svql3pZ https://t.co/UvbRyhQiNI](https://x.com/theshaheermalik/status/2115485494209577102) - twitter-govtech