Xinux found this post on redguides - http://www.redguides.com/forums/showthread.php/5141-eq2-current-offsets

In case it ever comes in handy :)


#opcode 0 is actually Login Request, hack because of dynamic opcode lists
OP_Unknown=0x0000
#Login opcodes
OP_LoginRequestMsg=0xF001
OP_LoginByNumRequestMsg=0x0001
OP_WSLoginRequestMsg=0x0002
OP_ESLoginRequestMsg=0x0003
OP_LoginReplyMsg=0x0004
OP_WSStatusReplyMsg=0x0005
OP_WorldStatusChangeMsg=0x0006
OP_AllWSDescRequestMsg=0x0007
OP_WorldListMsg=0x0008
OP_AllCharactersDescRequestMsg=0x0009
OP_AllCharactersDescReplyMsg=0x000A
OP_CreateCharacterRequestMsg=0x000B
OP_CreateCharacterReplyMsg=0x000C
OP_WSCreateCharacterRequestMsg=0x000D
OP_WSCreateCharacterReplyMsg=0x000E
OP_ReskinCharacterRequestMsg=0x000F
OP_DeleteCharacterRequestMsg=0x0010
OP_DeleteCharacterReplyMsg=0x0011
OP_PlayCharacterRequestMsg=0x0012
OP_PlayCharacterReplyMsg=0x0013
OP_ServerPlayCharacterRequestMsg=0x0014
OP_ServerPlayCharacterReplyMsg=0x0015
OP_ESInitMsg=0x0016
OP_ESReadyForClientsMsg=0x0017
OP_CreateZoneInstanceMsg=0x0018
OP_ZoneInstanceCreateReplyMsg=0x0019
OP_ZoneInstanceDestroyedMsg=0x001A
OP_ExpectClientAsCharacterRequest=0x001B
OP_ExpectClientAsCharacterReplyMs=0x001C
OP_ZoneInfoMsg=0x001D
OP_DoneLoadingZoneResourcesMsg=0x001E
OP_DoneSendingInitialEntitiesMsg=0x001F
OP_DoneLoadingEntityResourcesMsg=0x0020
OP_PredictionUpdateMsg=0x0021
OP_SetRemoteCmdsMsg=0x0022
OP_RemoteCmdMsg=0x0023
OP_GameWorldTimeMsg=0x0024
OP_MOTDMsg=0x0025
OP_ZoneMOTDMsg=0x0026
OP_AvatarCreatedMsg=0x0027
OP_AvatarDestroyedMsg=0x0028
OP_RequestCampMsg=0x0029
OP_CampStartedMsg=0x002A
OP_CampAbortedMsg=0x002B
OP_WhoQueryRequestMsg=0x002C
OP_WhoQueryReplyMsg=0x002D
OP_MonitorReplyMsg=0x002E
OP_MonitorCharacterListMsg=0x002F
OP_MonitorCharacterListRequestMsg=0x0030
OP_ClientCmdMsg=0x0031
OP_DispatchClientCmdMsg=0x0032
OP_DispatchESMsg=0x0033
OP_UpdateTargetMsg=0x0034
OP_UpdateTargetLocMsg=0x0035
OP_UpdateCharacterSheetMsg=0x0036
OP_UpdateSpellBookMsg=0x0037
OP_UpdateInventoryMsg=0x0039
OP_UpdateRecipeBookMsg=0x003A
OP_RequestRecipeDetailsMsg=0x003B
OP_RecipeDetailsMsg=0x003C
OP_UpdateSkillBookMsg=0x003D
OP_UpdateSkillsMsg=0x003E
OP_UpdateOpportunityMsg=0x003F
OP_ChangeZoneMsg=0x0041
OP_ClientTeleportRequestMsg=0x0042
OP_TeleportWithinZoneMsg=0x0043
OP_TeleportWithinZoneNoReloadMsg=0x0044
OP_MigrateClientToZoneRequestMsg=0x0045
OP_MigrateClientToZoneReplyMsg=0x0046
OP_ReadyToZoneMsg=0x0047
OP_AddClientToGroupMsg=0x0048
OP_AddGroupToGroupMsg=0x0049
OP_RemoveClientFromGroupMsg=0x004A
OP_RemoveGroupFromGroupMsg=0x004B
OP_MakeGroupLeaderMsg=0x004C
OP_GroupCreatedMsg=0x004D
OP_GroupDestroyedMsg=0x004E
OP_GroupMemberAddedMsg=0x004F
OP_GroupMemberRemovedMsg=0x0050
OP_GroupRemovedFromGroupMsg=0x0051
OP_GroupLeaderChangedMsg=0x0052
OP_GroupResendOOZDataMsg=0x0053
OP_GroupSettingsChangedMsg=0x0054
OP_OutOfZoneMemberDataMsg=0x0055
OP_SendLatestRequestMsg=0x0056
OP_ClearDataMsg=0x0057
OP_SetSocialMsg=0x0058
OP_ESStatusMsg=0x0059
OP_ESZoneInstanceStatusMsg=0x005A
OP_ZonesStatusRequestMsg=0x005B
OP_ZonesStatusMsg=0x005C
OP_ESWeatherRequestMsg=0x005D
OP_ESWeatherRequestEndMsg=0x005E
OP_WSWeatherUpdateMsg=0x005F
OP_DialogSelectMsg=0x0060
OP_DialogCloseMsg=0x0061
OP_RemoveSpellEffectMsg=0x0062
OP_RemoveConcentrationMsg=0x0063
OP_QuestJournalOpenMsg=0x0064
OP_QuestJournalInspectMsg=0x0065
OP_QuestJournalSetVisibleMsg=0x0066
OP_QuestJournalWaypointMsg=0x0067
OP_CreateGuildRequestMsg=0x0068
OP_CreateGuildReplyMsg=0x0069
OP_GuildsayMsg=0x006A
OP_GuildKickMsg=0x006B
OP_GuildUpdateMsg=0x006C
OP_DeleteGuildMsg=0x006D
OP_FellowshipExpMsg=0x006E
OP_ConsignmentCloseStoreMsg=0x006F
OP_ConsignItemRequestMsg=0x0070
OP_ConsignItemResponseMsg=0x0071
OP_PurchaseConsignmentRequestMsg=0x0072
OP_PurchaseConsignmentResponseMsg=0x0073
OP_ProcessScriptMsg=0x0074
OP_ProcessWorkspaceMsg=0x0075
OP_HouseDeletedRemotelyMsg=0x0076
OP_UpdateHouseDataMsg=0x0077
OP_UpdateHouseAccessDataMsg=0x0078
OP_PlayerHouseBaseScreenMsg=0x0079
OP_PlayerHousePurchaseScreenMsg=0x007A
OP_PlayerHouseAccessUpdateMsg=0x007B
OP_PlayerHouseDisplayStatusMsg=0x007C
OP_PlayerHouseCloseUIMsg=0x007D
OP_BuyPlayerHouseMsg=0x007E
OP_BuyPlayerHouseTintMsg=0x007F
OP_CollectAllHouseItemsMsg=0x0080
OP_RelinquishHouseMsg=0x0081
OP_EnterHouseMsg=0x0082
OP_ExitHouseMsg=0x0083
OP_HouseDefaultAccessSetMsg=0x0084
OP_HouseAccessSetMsg=0x0085
OP_HouseAccessRemoveMsg=0x0086
OP_PayHouseUpkeepMsg=0x0087
OP_MoveableObjectPlacementCriteri=0x0088
OP_EnterMoveObjectModeMsg=0x0089
OP_PositionMoveableObject=0x008A
OP_CancelMoveObjectModeMsg=0x008B
OP_ShaderCustomizationMsg=0x008C
OP_ReplaceableSubMeshesMsg=0x008D
OP_HouseCustomizationScreenMsg=0x008E
OP_CustomizationPurchaseRequestMs=0x008F
OP_CustomizationSetRequestMsg=0x0090
OP_CustomizationReplyMsg=0x0091
OP_TintWidgetsMsg=0x0092
OP_ExamineConsignmentRequestMsg=0x0093
OP_ExamineConsignmentResponseMsg=0x0094
OP_UISettingsResponseMsg=0x0095
OP_UIResetMsg=0x0096
OP_KeymapLoadMsg=0x0097
OP_KeymapNoneMsg=0x0098
OP_KeymapDataMsg=0x0099
OP_KeymapSaveMsg=0x009A
OP_DispatchSpellCmdMsg=0x009B
OP_EntityVerbsRequestMsg=0x009D
OP_EntityVerbsReplyMsg=0x009E
OP_EntityVerbsVerbMsg=0x009F
OP_ChatRelationshipUpdateMsg=0x00A0
OP_LootItemsRequestMsg=0x00A1
OP_StoppedLootingMsg=0x00A2
OP_SitMsg=0x00A3
OP_StandMsg=0x00A4
OP_SatMsg=0x00A5
OP_StoodMsg=0x00A6
OP_ExamineItemRequestMsg=0x00A7
OP_DefaultGroupOptionsRequestMsg=0x00A8
OP_DefaultGroupOptionsMsg=0x00A9
OP_GroupOptionsMsg=0x00AA
OP_DisplayGroupOptionsScreenMsg=0x00AB
OP_DisplayInnVisitScreenMsg=0x00AC
OP_DumpSchedulerMsg=0x00AD
OP_LSRequestPlayerDescMsg=0x00AE
OP_LSCheckAcctLockMsg=0x00AF
OP_WSAcctLockStatusMsg=0x00B0
OP_RequestHelpRepathMsg=0x00B1
OP_RequestTargetLocMsg=0x00B2
OP_UpdateMotdMsg=0x00B3
OP_PerformPlayerKnockbackMsg=0x00B4
OP_PerformCameraShakeMsg=0x00B5
OP_PopulateSkillMapsMsg=0x00B6
OP_CancelledFeignMsg=0x00B7
OP_SignalMsg=0x00B8
OP_ShowCreateFromRecipeUIMsg=0x00B9
OP_CancelCreateFromRecipeMsg=0x00BA
OP_BeginItemCreationMsg=0x00BB
OP_StopItemCreationMsg=0x00BC
OP_ShowItemCreationProcessUIMsg=0x00BD
OP_UpdateItemCreationProcessUIMsg=0x00BE
OP_DisplayTSEventReactionMsg=0x00BF
OP_ShowRecipeBookMsg=0x00C0
OP_KnowledgebaseRequestMsg=0x00C1
OP_KnowledgebaseResponseMsg=0x00C2
OP_CSTicketHeaderRequestMsg=0x00C3
OP_CSTicketInfoMsg=0x00C4
OP_CSTicketCommentRequestMsg=0x00C5
OP_CSTicketCommentResponseMsg=0x00C6
OP_CSTicketCreateMsg=0x00C7
OP_CSTicketAddCommentMsg=0x00C8
OP_CSTicketDeleteMsg=0x00C9
OP_CSTicketChangeNotificationMsg=0x00CA
OP_WorldDataUpdateMsg=0x00CB
OP_KnownLanguagesMsg=0x00CC
OP_LsRequestClientCrashLogMsg=0x00CD
OP_LsClientBaselogReplyMsg=0x00CE
OP_LsClientCrashlogReplyMsg=0x00CF
OP_LsClientAlertlogReplyMsg=0x00D0
OP_LsClientVerifylogReplyMsg=0x00D1
OP_ClientTeleportToLocationMsg=0x00D2
OP_UpdateClientPredFlagsMsg=0x00D3
OP_ChangeServerControlFlagMsg=0x00D4
OP_CSToolsRequestMsg=0x00D5
OP_CSToolsResponseMsg=0x00D6
OP_AddSocialStructureStandingMsg=0x00D7
OP_CreateBoatTransportsMsg=0x00D8
OP_PositionBoatTransportMsg=0x00D9
OP_MigrateBoatTransportMsg=0x00DA
OP_MigrateBoatTransportReplyMsg=0x00DB
OP_DisplayDebugNLLPointsMsg=0x00DC
OP_ExamineInfoRequestMsg=0x00DD
OP_QuickbarInitMsg=0x00DE
OP_QuickbarUpdateMsg=0x00DF
OP_MacroInitMsg=0x00E0
OP_MacroUpdateMsg=0x00E1
OP_QuestionnaireMsg=0x00E2
OP_LevelChangedMsg=0x00E3
OP_SpellGainedMsg=0x00E4
OP_EncounterBrokenMsg=0x00E5
OP_OnscreenMsgMsg=0x00E6
OP_DisplayWarningMsg=0x00E7
OP_ModifyGuildMsg=0x00E8
OP_GuildEventMsg=0x00E9
OP_GuildEventAddMsg=0x00EA
OP_GuildEventActionMsg=0x00EB
OP_GuildEventListMsg=0x00EC
OP_RequestGuildEventDetailsMsg=0x00ED
OP_GuildEventDetailsMsg=0x00EE
OP_RequestGuildInfoMsg=0x00EF
OP_RewardPackMsg=0x00F0
OP_RenameGuildMsg=0x00F1
OP_ZoneToFriendRequestMsg=0x00F2
OP_ZoneToFriendReplyMsg=0x00F3
OP_ChatCreateChannelMsg=0x00F4
OP_ChatJoinChannelMsg=0x00F5
OP_ChatWhoChannelMsg=0x00F6
OP_ChatLeaveChannelMsg=0x00F7
OP_ChatTellChannelMsg=0x00F8
OP_ChatTellUserMsg=0x00F9
OP_ChatToggleFriendMsg=0x00FA
OP_ChatToggleIgnoreMsg=0x00FB
OP_ChatSendFriendsMsg=0x00FC
OP_ChatSendIgnoresMsg=0x00FD
OP_ChatFiltersMsg=0x00FE
OP_MailGetHeadersMsg=0x00FF
OP_MailGetMessageMsg=0x0100
OP_MailSendMessageMsg=0x0101
OP_MailDeleteMessageMsg=0x0102
OP_MailGetHeadersReplyMsg=0x0103
OP_MailGetMessageReplyMsg=0x0104
OP_MailSendMessageReplyMsg=0x0105
OP_MailCommitSendMessageMsg=0x0106
OP_MailSendSystemMessageMsg=0x0107
OP_MailRemoveAttachFromMailMsg=0x0108
OP_WaypointRequestMsg=0x0109
OP_WaypointReplyMsg=0x010A
OP_WaypointSelectMsg=0x010B
OP_WaypointUpdateMsg=0x010C
OP_CharNameChangedMsg=0x010D
OP_ShowZoneTeleporterDestinations=0x010E
OP_SelectZoneTeleporterDestinatio=0x010F
OP_ReloadLocalizedTxtMsg=0x0110
OP_RequestGuildMembershipMsg=0x0111
OP_GuildMembershipResponseMsg=0x0112
OP_LeaveGuildNotifyMsg=0x0113
OP_JoinGuildNotifyMsg=0x0114
OP_AvatarUpdateMsg=0x0115
OP_BioUpdateMsg=0x0116
OP_InspectPlayerMsg=0x0117
OP_WSServerLockMsg=0x0118
OP_LSServerLockMsg=0x0119
OP_WSServerHideMsg=0x011A
OP_CsCategoryRequestMsg=0x011B
OP_CsCategoryResponseMsg=0x011C
OP_KnowledgeWindowSlotMappingMsg=0x011D
OP_LFGUpdateMsg=0x011E
OP_AFKUpdateMsg=0x011F
OP_AnonUpdateMsg=0x0120
OP_UpdateActivePublicZonesMsg=0x0121
OP_UnknownNpcMsg=0x0122
OP_PromoFlagsDetailsMsg=0x0123
OP_ConsignViewCreateMsg=0x0124
OP_ConsignViewGetPageMsg=0x0125
OP_ConsignViewReleaseMsg=0x0126
OP_ConsignRemoveItemsMsg=0x0127
OP_UpdateDebugRadiiMsg=0x0128
OP_SnoopMsg=0x0129
OP_ReportMsg=0x012A
OP_UpdateRaidMsg=0x012B
OP_UpdateArenaMsg=0x012C
OP_ConsignViewSortMsg=0x012D
OP_TitleUpdateMsg=0x012E
OP_ClientFellMsg=0x012F
OP_ClientInDeathRegionMsg=0x0130
OP_CampClientMsg=0x0131
OP_CSToolAccessResponseMsg=0x0132
OP_GetAvatarAccessRequestForCSToo=0x0133
OP_TrackingUpdateMsg=0x0134
OP_BeginTrackingMsg=0x0135
OP_StopTrackingMsg=0x0136
OP_AdvancementRequestMsg=0x0137
OP_UpdateAvgFrameTimeMsg=0x0138
OP_MapFogDataInitMsg=0x0139
OP_MapFogDataUpdateMsg=0x013A
OP_CloseGroupInviteWindowMsg=0x013B
OP_UpdateGroupMemberDataMsg=0x013C
OP_WorldPingMsg=0x013D
OP_MoveLogUpdateMsg=0x013E
OP_OfferQuestMsg=0x013F
OP_WorldShutdownUpdateMsg=0x0140
OP_DisplayMailScreenMsg=0x0141
OP_ClientIdleBeginMsg=0x0142
OP_ClientIdleEndMsg=0x0143
OP_PurchaseConsignmentLoreCheckRe=0x0144
OP_NotifyApprenticeStoppedMentori=0x0145
OP_CorruptedClientMsg=0x0146
OP_WorldDataChangeMsg=0x0147
OP_MailEventNotificationMsg=0x0148
OP_RestartZoneMsg=0x0149
OP_FlightPathsMsg=0x014A
OP_CharacterLinkdeadMsg=0x014B
OP_CharTransferStartRequestMsg=0x014C
OP_CharTransferStartReplyMsg=0x014D
OP_CharTransferRequestMsg=0x014E
OP_CharTransferReplyMsg=0x014F
OP_CharTransferRollbackRequestMsg=0x0150
OP_CharTransferCommitRequestMsg=0x0151
OP_CharTransferRollbackReplyMsg=0x0152
OP_CharTransferCommitReplyMsg=0x0153
OP_GetCharacterSerializedRequestM=0x0154
OP_GetCharacterSerializedReplyMsg=0x0155
OP_CreateCharFromCBBRequestMsg=0x0156
OP_CreateCharFromCBBReplyMsg=0x0157
OP_HousingDataChangedMsg=0x0158
OP_HousingRestoreMsg=0x0159
OP_AuctionItem=0x015A
OP_AuctionItemReply=0x015B
OP_AuctionCoin=0x015C
OP_AuctionCoinReply=0x015D
OP_AuctionCharacter=0x015E
OP_AuctionCharacterReply=0x015F
OP_AuctionCommitMsg=0x0160
OP_AuctionAbortMsg=0x0161
OP_CharTransferValidateRequestMsg=0x0162
OP_CharTransferValidateReplyMsg=0x0163
OP_RaceRestrictionMsg=0x0164
OP_SetInstanceDisplayNameMsg=0x0165
OP_GetAuctionAssetIDMsg=0x0166
OP_GetAuctionAssetIDReplyMsg=0x0167
OP_ResendWorldChannelsMsg=0x0168
OP_DisplayExchangeScreenMsg=0x0169
OP_AuditAuctionEventMsg=0x016A
OP_ArenaGameTypesMsg=0x016B
OP_ArenaListMsg=0x016C
OP_ArenaSettingsMsg=0x016D
OP_ArenaZoneListMsg=0x016E
OP_ArenaResponseMsg=0x016F
OP_ArenaActionMsg=0x0170
OP_ArenaParamsMsg=0x0171
OP_ArenaInstanceReadyMsg=0x0172
OP_ArenaCreateMsg=0x0173
OP_ArenaJoinRequestMsg=0x0174
OP_ArenaMatchStateMsg=0x0175
OP_ArenaMatchStateUpdateMsg=0x0176
OP_ArenaJoinTeamRequestMsg=0x0177
OP_ArenaChampionDetailsMsg=0x0178
OP_ArenaChampionListMsg=0x0179
OP_ArenaSetChampionRequestMsg=0x017A
OP_ArenaPlayerReadyMsg=0x017B
OP_ArenaLeaveRequestMsg=0x017C
OP_ArenaZoneRequestMsg=0x017D
OP_ArenaOpenArenaRequestMsg=0x017E
OP_ArenaCloseArenaRequestMsg=0x017F
OP_InviteRequestMsg=0x0180
OP_InviteResponseMsg=0x0181
OP_InviteTargetResponseMsg=0x0182
OP_InspectPlayerRequestMsg=0x0183
OP_DispatchMsg=0x0184

OP_EqHearChatCmd=0x0185
OP_EqDisplayTextCmd=0x0186
OP_EqCreateGhostCmd=0x0187
OP_EqCreateWidgetCmd=0x0188
OP_EqCreateSignWidgetCmd=0x0189
OP_EqDestroyGhostCmd=0x018A
OP_EqUpdateGhostCmd=0x018B
OP_EqSetControlGhostCmd=0x018C
OP_EqSetPOVGhostCmd=0x018D
OP_EqHearCombatCmd=0x018E
OP_EqHearSpellCastCmd=0x018F
OP_EqHearSpellInterruptCmd=0x0190
OP_EqHearSpellFizzleCmd=0x0191
OP_EqHearConsiderCmd=0x0192
OP_EqUpdateSubClassesCmd=0x0193
OP_EqCreateListBoxCmd=0x0194
OP_EqSetDebugPathPointsCmd=0x0195
OP_EqCannedEmoteCmd=0x0196
OP_EqStateCmd=0x0197
OP_EqPlaySoundCmd=0x0198
OP_EqPlaySound3DCmd=0x0199
OP_EqPlayVoiceCmd=0x019A
OP_EqHearDrowningCmd=0x019B
OP_EqHearDeathCmd=0x019C
OP_EqGroupMemberRemovedCmd=0x019D
OP_EqHearChainEffectCmd=0x019E
OP_EqReceiveOfferCmd=0x019F
OP_EqInspectPCResultsCmd=0x01A0
OP_EqDrawablePathGraphCmd=0x01A1
OP_EqDialogOpenCmd=0x01A2
OP_EqDialogCloseCmd=0x01A3
OP_EqCollectionUpdateCmd=0x01A4
OP_EqCollectionFilterCmd=0x01A5
OP_EqCollectionItemCmd=0x01A6
OP_EqQuestJournalUpdateCmd=0x01A7
OP_EqQuestJournalReplyCmd=0x01A8
OP_EqQuestGroupCmd=0x01A9
OP_EqUpdateMerchantCmd=0x01AA
OP_EqUpdateStoreCmd=0x01AB
OP_EqUpdatePlayerTradeCmd=0x01AC
OP_EqHelpPathCmd=0x01AD
OP_EqHelpPathClearCmd=0x01AE
OP_EqUpdateBankCmd=0x01AF
OP_EqExamineInfoCmd=0x01B0
OP_EqUpdateLootCmd=0x01B1
OP_EqJunctionListCmd=0x01B2
OP_EqShowDeathWindowCmd=0x01B3
OP_EqDisplaySpellFailCmd=0x01B4
OP_EqSpellCastStartCmd=0x01B5
OP_EqSpellCastEndCmd=0x01B6
OP_EqResurrectedCmd=0x01B7
OP_EqChoiceWinCmd=0x01B8
OP_EqSetDefaultVerbCmd=0x01B9
OP_EqInstructionWindowCmd=0x01BA
OP_EqInstructionWindowCloseCmd=0x01BB
OP_EqInstructionWindowGoalCmd=0x01BC
OP_EqInstructionWindowTaskCmd=0x01BD
OP_EqEnableGameEventCmd=0x01BE
OP_EqShowWindowCmd=0x01BF
OP_EqEnableWindowCmd=0x01C0
OP_EqFlashWindowCmd=0x01C1
OP_EqHearPlayFlavorCmd=0x01C2
OP_EqUpdateSignWidgetCmd=0x01C3
OP_EqDebugPVDCmd=0x01C4
OP_EqShowBookCmd=0x01C5
OP_EqQuestionnaireCmd=0x01C6
OP_EqGetProbsCmd=0x01C7
OP_EqHearHealCmd=0x01C8
OP_EqChatChannelUpdateCmd=0x01C9
OP_EqWhoChannelQueryReplyCmd=0x01CA
OP_EqAvailWorldChannelsCmd=0x01CB
OP_EqUpdateTargetCmd=0x01CC
OP_EqConsignmentItemsCmd=0x01CD
OP_EqStartBrokerCmd=0x01CE
OP_EqMapExplorationCmd=0x01CF
OP_EqStoreLogCmd=0x01D0
OP_EqSpellMoveToRangeAndRetryCmd=0x01D1
OP_EqUpdatePlayerMailCmd=0x01D2
OP_EqArenaResultsCmd=0x01D3