MMA (Covea) registered over 1,000 second-level .MMA domain names for its insurance agent channel. Each domain is redirecting to an existing webpage. This is a good example of channel.brand. This is one of their agent domains:

MMA IARD Assurances Mutuelles provides insurance services. The Company offers automobile, house, buildings, health, family, accidental death, retirement plans, asset protection, enterprise solutions, and related insurance products. MMA IARD Assurances Mutuelles serves individuals and companies throughout France.
More Use Cases using .mma
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