Call of Duty: Modern Warfare In-Game Account Registration
https://support.activision.com/modern-warfare/articles/call-of-duty-modern-warfare-in-game-account-registration
WEBAfter signing up or logging in, you'll see your Activision ID, also referred to as your Display Name. Activision IDs include a hash mark followed by a series of numbers (ex: DisplayName#1234567). This number is unique to your Activision account and allows players with the same Gamertag, PSN ID, BattleTag, or SteamID to keep their names …
DA: 80 PA: 1 MOZ Rank: 66