- L00
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- Exalted Mythic Member
- gamertag: [none]
- user homepage:
I'm guessing that one of them might be for superusers, kinda like admin.bungie.net is for mods. Typically, an "m" subdomain is for mobile, but I'm not sure if that's the case here. And surely beta.bungie.net is for testing. Another one might be, too, for a different stage of testing.