"110": "Restart marker replay"
"120": "Service ready in n minutes"
"125": "Data connection already open; transfer starting"
"150": "Opening data connection"
"200": "Success"
"202": "Command not implemented"
"211": "System status or help reply"
"212": "Directory status"
"213": "File status"
"214": "Help message"
"215": "System type"
"220": "Service ready for new user"
"221": "Service closing control connection"
"225": "Data connection open; no transfer in progress"
"226": "Closing data connection"
"227": "Entering Passive Mode"
"228": "Entering Long Passive Mode"
"229": "Entering Extended Passive Mode"
"230": "User logged in"
"231": "User logged out"
"232": "Logout command noted"
"234": "Authentication method accepted"
"250": "Successful file action"
"257": "Successful directory creation"
"331": "Username okay, need password"
"332": "Need account for login"
"350": "Requested file action pending further information"
"421": "Service not available"
"425": "Can't open data connection"
"426": "Connection closed; transfer aborted"
"430": "Invalid username or password"
"434": "Requested host unavailable"
"450": "Requested file action not taken"
"451": "Requested action aborted; local error in processing"
"452": "Requested action not taken; file system error"
"501": "Syntax error"
"502": "Command not implemented"
"503": "Bad command sequence"
"504": "Command not implemented for that parameter"
"530": "Not logged in"
"532": "Need account for storing files"
"534": "Could not connect; policy requires SSL"
"550": "Requested action not taken; file unavailable"
"551": "Requested action aborted; page type unknown"
"552": "Requested file action aborted; exceeded storage allocation"
"553": "Requested action not taken; file name not allowed"
"631": "Integrity protected"
"632": "Confidentiality and integrity protected"
"633": "Confidentiality protected"