Messages from swan

Based on the SMS messages received, it appears that "Swan" is a service or company that requires verification codes to be sent in order for the recipient to access something. The sender name suggests that this may be related to security or protection - swans are known for their graceful beauty but also their fierce protectiveness of themselves and their young. However, without further information about what exactly these verification codes are needed for, it's difficult to say more definitively about what Swan does as a business/service.