Ultima Online Packet Guide

A definitive reference for Ultima Online network packets. Search, filter, and sort by direction, type, client version, and status to explore every known client↔server packet.

212 results

Direction

Type

Status

Client Version


0x00	CreateCharacter (legacy)	C->S	104	Fixed	All	Active	View
0x01	Disconnect	C->S	5	Fixed	All	Active	View
0x02	MovementReq	C->S	7	Fixed	All	Active	View
0x03	Talk Request	C->S	Variable	Variable	All	Active	View
0x05	AttackReq	C->S	5	Fixed	All	Active	View
0x07	LiftReq	C->S	7	Fixed	All	Active	View
0x08	DropReq	C->S	14(+grid)	Variable	All	Active	View
0x0B	Damage	S->C	7	Fixed	All	Active	View
0x11	MobileStatus	S->C	43/70/88/91/121	Variable	All	Active	View
0x12	TextCommand	C->S	Variable	Variable	All	Active	View
0x13	EquipReq	C->S	10	Fixed	All	Active	View
0x17	MobileHealthbar	S->C	12	Fixed	All	Active	View
0x1A	WorldItem	S->C	14 + opt	Variable	All	Active	View
0x1B	LoginConfirmation	S->C	37	Fixed	All	Active	View
0x1C	Send Speech (ASCII)	S->C	Variable	Variable	All	Active	View
0x1D	RemoveEntity	S->C	5	Fixed	All	Active	View
0x20	MobileUpdate	S->C	19	Fixed	All	Active	View
0x21	MovementRejected	S->C	8	Fixed	All	Active	View
0x22	MovementAccepted	S->C	3	Fixed	All	Active	View
0x22	Resynchronize	C->S	3	Fixed	All	Active	View
0x23	DragEffect	S->C	26	Fixed	All	Active	View
0x24	DisplayContainer	S->C	7 or 9	Fixed	All	Active	View
0x25	ContainerContentUpdate	S->C	20 or 21	Fixed	All	Active	View
0x27	LiftReject	S->C	2	Fixed	All	Active	View
0x2C	DeathStatusResponse	C->S	2	Fixed	All	Active	View
0x2C	DeathStatus	S->C	2	Fixed	All	Active	View
0x2E	EquipUpdate	S->C	15	Fixed	All	Active	View
0x2F	Swing	S->C	10	Fixed	All	Active	View
0x31	Pet Window	S->C	Variable	Variable	KR	Reference	View
0x34	MobileQuery	C->S	10	Fixed	All	Active	View
0x38	PathfindMessage	S->C	7	Fixed	All	Active	View
0x3A	ChangeSkillLock	C->S	Variable	Variable	All	Active	View
0x3A	SkillsUpdate (absolute)	S->C	Variable	Variable	All	Active	View
0x3A	SkillChange (delta)	S->C	13	Fixed	All	Active	View
0x3B	EndVendorBuy	S->C	8	Fixed	All	Active	View
0x3C	ContainerContent	S->C	5 + N*(19/20)	Variable	All	Active	View
0x3D	Ship	S->C	2	Fixed	Legacy	Reference	View
0x3E	Vestion Blob	S->C	37	Fixed	Legacy	Reference	View
0x3F	Update Object Chunk	S->C	Variable	Variable	Legacy	Reference	View
0x40	Update Terrain Chunk	S->C	201	Fixed	Legacy	Reference	View
0x41	Update Tile Data	S->C	Variable	Variable	Legacy	Reference	View
0x42	Update Art	S->C	Variable	Variable	Legacy	Reference	View
0x43	Update Anim	S->C	41	Fixed	Legacy	Reference	View
0x44	Update Hues	S->C	201	Fixed	Legacy	Reference	View
0x45	Version OK	S->C	5	Fixed	Legacy	Reference	View
0x46	New Art	S->C	Variable	Variable	Legacy	Reference	View
0x47	New Terrain	C->S	11	Fixed	Legacy	Reference	View
0x48	New Animation	C->S	73	Fixed	Legacy	Reference	View
0x49	New Hues	C->S	93	Fixed	Legacy	Reference	View
0x4A	Destroy Art	C->S	5	Fixed	Legacy	Reference	View
0x4B	Check Version	C->S	9	Fixed	Legacy	Reference	View
0x4E	PersonalLightLevel	S->C	6	Fixed	All	Active	View
0x4F	GlobalLightLevel	S->C	2	Fixed	All	Active	View
0x50	Bulletin Board Header (Old)	S->C	Variable	Variable	Legacy	Reference	View
0x51	Bulletin Board Message (Old)	S->C	Variable	Variable	Legacy	Reference	View
0x52	Post Board Message (Old)	C->S	Variable	Variable	Legacy	Reference	View
0x53	PopupMessage	S->C	2	Fixed	All	Active	View
0x54	SoundEffect	S->C	12	Fixed	All	Active	View
0x55	LoginComplete	S->C	1	Fixed	All	Active	View
0x59	New Context Effect	S->C	Variable	Variable	Legacy	Reference	View
0x5A	Update Context Effect	S->C	Variable	Variable	Legacy	Reference	View
0x5B	CurrentTime	S->C	4	Fixed	All	Active	View
0x5C	Restart Version	S->C	2	Fixed	Legacy	Reference	View
0x5D	PlayCharacter	C->S	73	Fixed	All	Active	View
0x65	Weather	S->C	4	Fixed	All	Active	View
0x67	Simped	S->C	21	Fixed	Legacy	Reference	View
0x68	Script LS Attach	S->C	Variable	Variable	Legacy	Reference	View
0x69	Friends	S->C	Variable	Variable	Legacy	Reference	View
0x6A	Friend Notify	S->C	3	Fixed	Legacy	Reference	View
0x6B	Key Use	C->S	9	Fixed	Legacy	Reference	View
0x6C	TargetResponse	C->S	19	Fixed	All	Active	View
0x6C	TargetReq	S->C	19	Fixed	All	Active	View
0x6C	CancelTarget	S->C	19	Fixed	All	Active	View
0x6D	PlayMusic	S->C	3	Fixed	All	Active	View
0x6D	StopMusic	S->C	3	Fixed	All	Active	View
0x6E	MobileAnimation	S->C	14	Fixed	All	Active	View
0x6F	SecureTrade (incoming)	C->S	Variable	Variable	All	Active	View
0x70	ScreenEffect	S->C	28	Fixed	All	Active	View
0x71	Bulletin Board (Grouped)	Both	Variable	Extended	Legacy	Reference	View
0x72	SetWarMode	C->S	5	Fixed	All	Active	View
0x72	SetWarMode (server)	S->C	5	Fixed	All	Active	View
0x73	PingReq	C->S	2	Fixed	All	Active	View
0x73	PingAck	S->C	2	Fixed	All	Active	View
0x74	VendorBuyList	S->C	Variable	Variable	All	Active	View
0x75	RenameRequest	C->S	35	Fixed	All	Active	View
0x76	ServerChange	S->C	16	Fixed	All	Active	View
0x77	MobileMoving	S->C	17	Fixed	All	Active	View
0x78	MobileIncoming	S->C	Variable	Variable	All	Active	View
0x7B	Sequence	S->C	2	Fixed	All	Active	View
0x7C	Open Dialog Box (Menus)	S->C	Variable	Variable	All	Active	View
0x7D	MenuResponse	C->S	13	Fixed	All	Active	View
0x7E	God View Query	C->S	2	Fixed	Legacy	Reference	View
0x7F	God View Data	S->C	Variable	Variable	Legacy	Reference	View
0x80	AccountLogin	C->S	62	Fixed	All	Active	View
0x81	ChangeCharacter	S->C	5+60*slots	Variable	All	Unused	View
0x82	AccountLoginRejected	S->C	2	Fixed	All	Active	View
0x83	DeleteCharacter	C->S	39	Fixed	All	Active	View
0x85	CharacterDeleteResult	S->C	2	Fixed	All	Active	View
0x87	Send Resources	S->C	Variable	Variable	Legacy	Reference	View
0x88	DisplayPaperdoll	S->C	66	Fixed	All	Active	View
0x8C	PlayServerAck	S->C	11	Fixed	All	Active	View
0x91	GameLogin	C->S	65	Fixed	All	Active	View
0x95	HuePickerResponse	C->S	9	Fixed	All	Active	View
0x95	DisplayHuePicker	S->C	9	Fixed	All	Active	View
0x97	MovePlayer	S->C	2	Fixed	All	Active	View
0x98	MobileNameRequest	C->S	Variable	Variable	All	Active	View
0x99	MultiTargetReq	S->C	26 or 30	Fixed	All	Active	View
0x9A	AsciiPromptResponse	C->S	Variable	Variable	All	Active	View
0x9B	HelpRequest	C->S	258	Fixed	All	Active	View
0x9E	VendorSellList	S->C	Variable	Variable	All	Active	View
0x9F	Shop Offer (Sell Window)	S->C	Variable	Variable	Legacy	Reference	View
0xA0	PlayServer	C->S	3	Fixed	All	Active	View
0xA1	MobileHits	S->C	9	Fixed	All	Active	View
0xA2	MobileMana	S->C	9	Fixed	All	Active	View
0xA3	MobileStam	S->C	9	Fixed	All	Active	View
0xA4	SystemInfo	C->S	149	Fixed	All	Active	View
0xA5	LaunchBrowser	S->C	Variable	Variable	All	Active	View
0xA6	ScrollMessage	S->C	Variable	Variable	All	Active	View
0xA7	RequestScrollWindow	C->S	4	Fixed	All	Active	View
0xA8	AccountLoginAck (Server List)	S->C	6 + 40*N	Variable	All	Active	View
0xA9	CharacterList	S->C	Variable	Variable	All	Active	View
0xAA	ChangeCombatant	S->C	5	Fixed	All	Active	View
0xAD	Unicode/Ascii Speech Request	C->S	Variable	Variable	All	Active	View
0xAE	Unicode Speech Message	S->C	Variable	Variable	All	Active	View
0xAF	DeathAnimation	S->C	13	Fixed	All	Active	View
0xB0	Send Gump Menu Dialog	S->C	Variable	Variable	All	Reference	View
0xB2	Chat Message	S->C	Variable	Variable	Legacy	Reference	View
0xB3	Chat Text	S->C	Variable	Variable	Legacy	Reference	View
0xB5	Chat Open	S->C	64	Fixed	Legacy	Reference	View
0xB7	Help/Tip Data	S->C	Variable	Variable	All	Active	View
0xB8	ProfileReq	C->S	Variable	Variable	All	Active	View
0xB8	DisplayProfile	S->C	Variable	Variable	All	Active	View
0xB9	SupportedFeature	S->C	3 or 5	Variable	All	Active	View
0xBC	SeasonChange	S->C	3	Fixed	All	Active	View
0xBD	ClientVersionRequest	S->C	3	Fixed	All	Active	View
0xBD	ClientVersion	C->S	Variable	Variable	All	Active	View
0xBE	Assist Version	C->S	Variable	Variable	Legacy	Reference	View
0xBF	Extended Command	C->S	Variable	Extended	All	Active	View
0xBF.0x05	ScreenSize (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x06	Party System (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x08	MapChange	S->C	6	Extended	All	Active	View
0xBF.0x09	DisarmRequest (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x0A	StunRequest (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x0B	Language (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x0C	CloseStatus (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x0E	Animate (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x0F	Unknown/Empty (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x10	QueryProperties (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x10	DisplayEquipmentInfo	S->C	Variable	Extended	All	Active	View
0xBF.0x18	MapPatches	S->C	41	Extended	All	Active	View
0xBF.0x19	StatLockInfo (sub)	S->C	12	Extended	AOS+	Active	View
0xBF.0x1A	StatLockChange (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x1B.0x01	NewSpellbookContent (sub/cmd)	S->C	23	Extended	AOS+	Active	View
0xBF.0x1C	CastSpell (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x22	Damage (legacy)	S->C	11	Extended	All	Active	View
0xBF.0x24	Unhandled (sub)	C->S	Variable	Extended	All	Active	View
0xBF.0x2C	BandageTarget (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x2D	TargetedSpell (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x2E	TargetedSkillUse (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x30	TargetByResourceMacro (sub)	C->S	Variable	Extended	AOS+	Active	View
0xBF.0x32	ToggleFlying (sub)	C->S	Variable	Extended	SA+	Active	View
0xC0	HuedEffect	S->C	36	Fixed	All	Active	View
0xC1	Cliloc Message (Localized)	S->C	Variable	Variable	AOS+	Active	View
0xC2	Unicode TextEntry Prompt	S->C	21	Fixed	All	Active	View
0xC2	UnicodePromptResponse	C->S	Variable	Variable	All	Active	View
0xC4	Semi Visible	S->C	6	Fixed	Legacy	Reference	View
0xC5	Invalid Map (Legacy)	S->C	203	Fixed	Legacy	Reference	View
0xC6	InvalidMap	S->C	1	Fixed	All	Active	View
0xC7	ParticleEffect	S->C	49	Fixed	All	Active	View
0xC8	SetUpdateRange	C->S	2	Fixed	All	Active	View
0xC8	ChangeUpdateRange	S->C	2	Fixed	All	Active	View
0xCB	GQ Count	S->C	7	Fixed	Legacy	Reference	View
0xCC	Cliloc Message Affix	S->C	Variable	Variable	AOS+	Active	View
0xCD	Unknown	S->C	Variable	Variable	Legacy	Reference	View
0xCE	Unknown	S->C	Variable	Variable	Legacy	Reference	View
0xD0	ConfigurationFile	C->S	Variable	Variable	All	Active	View
0xD1	LogoutReq	C->S	2	Fixed	All	Active	View
0xD1	LogoutAck	S->C	2	Fixed	All	Active	View
0xD2	Unknown	S->C	Variable	Variable	Legacy	Reference	View
0xD3	Unknown	S->C	Variable	Variable	Legacy	Reference	View
0xD4	Book Header (Old)	S->C	99	Fixed	Legacy	Reference	View
0xD6	Mega Cliloc	S->C	Variable	Variable	AOS+	Reference	View
0xD7	Generic AOS Commands	Both	Variable	Extended	AOS+	Reference	View
0xD7	EncodedCommand (container)	C->S	Variable	Extended	AOS+	Active	View
0xD7.0x28	Guild Gump Request (encoded)	C->S	Variable	Extended	AOS+	Active	View
0xD7.0x32	Quest Gump Request (encoded)	C->S	Variable	Extended	AOS+	Active	View
0xDC	OPL Info	S->C	9	Fixed	AOS+	Active	View
0xDD	Compressed Gump	S->C	Variable	Variable	All	Reference	View
0xDE	Update Mobile Status	S->C	Variable	Variable	AOS+	Reference	View
0xDF	Buff/Debuff System	S->C	Variable	Variable	AOS+	Reference	View
0xE0	Bug Report (KR)	C->S	Variable	Variable	KR	Reference	View
0xE1	ClientType	C->S	Variable	Variable	All	Active	View
0xE2	NewMobileAnimation	S->C	10	Fixed	All	Active	View
0xE3	KR Encryption Request	S->C	77	Fixed	KR	Reference	View
0xE4	KR Encryption Response	C->S	Variable	Variable	KR	Reference	View
0xE5	Display Waypoint	S->C	Variable	Variable	KR	Reference	View
0xE6	Hide Waypoint	S->C	5	Fixed	KR	Reference	View
0xE7	Continue Highlight UI (KR)	S->C	12	Fixed	KR	Reference	View
0xE8	Remove Highlight UI (KR)	C->S	13	Fixed	KR	Reference	View
0xE9	Toggle Highlight UI (KR)	S->C	Variable	Variable	KR	Reference	View
0xEA	Enable KR Hotbar	S->C	3	Fixed	KR	Reference	View
0xEB	Report Use KR Hotbar Icon	C->S	11	Fixed	KR	Reference	View
0xEC	EquipMacro	C->S	Variable	Variable	All	Active	View
0xED	UnequipMacro	C->S	Variable	Variable	All	Active	View
0xEE	Unknown	S->C	Variable	Variable	KR	Reference	View
0xEF	LoginServerSeed	C->S	21	Fixed	All	Active	View
0xF0	Unknown (Client)	C->S	Variable	Variable	KR	Reference	View
0xF1	Unknown (Client)	C->S	9	Fixed	KR	Reference	View
0xF2	TimeSyncResponse	S->C	25	Fixed	All	Active	View
0xF3	WorldEntity (HS)	S->C	24 or 26	Fixed	SA/HS	Active	View
0xF4	CrashReport	C->S	Variable	Variable	All	Active	View
0xF8	CreateCharacter (new)	C->S	106	Fixed	All	Active	View

Thank you to RunUO, ServUO and POL Server