diff --git a/IRCStates/Numeric.cs b/IRCStates/Numeric.cs
index 674e313..50374d4 100644
--- a/IRCStates/Numeric.cs
+++ b/IRCStates/Numeric.cs
@@ -8,50 +8,86 @@ namespace IRCStates
     public static class Numeric
     {
 #pragma warning disable CA1707 // Identifiers should not contain underscores
-        public const string RPL_WELCOME = "001";
-        public const string RPL_ISUPPORT = "005";
-        public const string RPL_MOTD = "372";
-        public const string RPL_MOTDSTART = "375";
-        public const string RPL_UMODEIS = "221";
+        public const string RPL_WELCOME     = "001";
+        public const string RPL_ISUPPORT    = "005";
+        public const string RPL_MOTD        = "372";
+        public const string RPL_MOTDSTART   = "375";
+        public const string RPL_ENDOFMOTD   = "376";
+        public const string ERR_NOMOTD      = "422";
+        public const string RPL_UMODEIS     = "221";
         public const string RPL_VISIBLEHOST = "396";
+        public const string RPL_TRYAGAIN    = "263";
+        public const string RPL_YOUREOPER   = "381";
+
+        public const string ERR_NOSUCHNICK   = "401";
+        public const string ERR_NOSUCHSERVER = "402";
 
         public const string RPL_CHANNELMODEIS = "324";
-        public const string RPL_CREATIONTIME = "329";
-        public const string RPL_TOPIC = "332";
-        public const string RPL_TOPICWHOTIME = "333";
+        public const string RPL_CREATIONTIME  = "329";
+        public const string RPL_TOPIC         = "332";
+        public const string RPL_TOPICWHOTIME  = "333";
 
-        public const string RPL_WHOREPLY = "352";
-        public const string RPL_WHOSPCRPL = "354";
-        public const string RPL_ENDOFWHO = "315";
-        public const string RPL_NAMREPLY = "353";
+        public const string RPL_WHOREPLY   = "352";
+        public const string RPL_WHOSPCRPL  = "354";
+        public const string RPL_ENDOFWHO   = "315";
+        public const string RPL_NAMREPLY   = "353";
         public const string RPL_ENDOFNAMES = "366";
 
-        public const string RPL_BANLIST = "367";
-        public const string RPL_ENDOFBANLIST = "368";
-        public const string RPL_QUIETLIST = "728";
+        public const string RPL_WHOWASUSER  = "314";
+        public const string RPL_ENDOFWHOWAS = "369";
+
+        public const string RPL_BANLIST        = "367";
+        public const string RPL_ENDOFBANLIST   = "368";
+        public const string RPL_QUIETLIST      = "728";
         public const string RPL_ENDOFQUIETLIST = "729";
 
-        public const string RPL_LOGGEDIN = "900";
-        public const string RPL_LOGGEDOUT = "901";
+        public const string RPL_LOGGEDIN    = "900";
+        public const string RPL_LOGGEDOUT   = "901";
         public const string RPL_SASLSUCCESS = "903";
-        public const string ERR_SASLFAIL = "904";
+        public const string ERR_SASLFAIL    = "904";
         public const string ERR_SASLTOOLONG = "905";
         public const string ERR_SASLABORTED = "906";
         public const string ERR_SASLALREADY = "907";
-        public const string RPL_SASLMECHS = "908";
+        public const string RPL_SASLMECHS   = "908";
 
-        public const string RPL_WHOISUSER = "311";
-        public const string RPL_WHOISSERVER = "312";
+        public const string RPL_WHOISUSER     = "311";
+        public const string RPL_WHOISSERVER   = "312";
         public const string RPL_WHOISOPERATOR = "313";
-        public const string RPL_WHOISIDLE = "317";
+        public const string RPL_WHOISIDLE     = "317";
         public const string RPL_WHOISCHANNELS = "319";
-        public const string RPL_WHOISACCOUNT = "330";
-        public const string RPL_WHOISHOST = "378";
-        public const string RPL_WHOISMODES = "379";
-        public const string RPL_WHOISSECURE = "671";
-        public const string RPL_ENDOFWHOIS = "318";
+        public const string RPL_WHOISACCOUNT  = "330";
+        public const string RPL_WHOISHOST     = "378";
+        public const string RPL_WHOISMODES    = "379";
+        public const string RPL_WHOISSECURE   = "671";
+        public const string RPL_AWAY          = "301";
+        public const string RPL_ENDOFWHOIS    = "318";
 
-        public const string ERR_NOSUCHCHANNEL = "403";
+        public const string ERR_ERRONEUSNICKNAME = "432";
+        public const string ERR_NICKNAMEINUSE    = "433";
+        public const string ERR_BANNICKCHANGE    = "435";
+        public const string ERR_UNAVAILRESOURCE  = "437";
+        public const string ERR_NICKTOOFAST      = "438";
+        public const string ERR_CANTCHANGENICK   = "447";
+
+        public const string ERR_NOSUCHCHANNEL   = "403";
+        public const string ERR_TOOMANYCHANNELS = "405";
+        public const string ERR_USERONCHANNEL   = "443";
+        public const string ERR_LINKCHANNEL     = "470";
+        public const string ERR_BADCHANNAME     = "479";
+        public const string ERR_BADCHANNEL      = "926";
+
+        public const string ERR_BANNEDFROMCHAN = "474";
+        public const string ERR_INVITEONLYCHAN = "473";
+        public const string ERR_BADCHANNELKEY  = "475";
+        public const string ERR_CHANNELISFULL  = "471";
+        public const string ERR_NEEDREGGEDNICK = "477";
+        public const string ERR_THROTTLE       = "480";
+
+        public const string RPL_LOGOFF     = "601";
+        public const string RPL_MONOFFLINE = "731";
+
+        public const string RPL_RSACHALLENGE2      = "740";
+        public const string RPL_ENDOFRSACHALLENGE2 = "741";
 #pragma warning restore CA1707 // Identifiers should not contain underscores
     }
 }