Ultima Online Protocol
Packet # Packet Name Length Client Server Obsolete
---- Data Types ---- ---- ---- ----
---- Encrypted Login Seed 0x0004 X X
0x00 Character Creation 0x0068 X X
0x01 Logout 0x0005 X
0x02 Request Movement 0x0007 X X
0x03 Speech dynamic X
0x04 Request God Mode 0x0002 X
0x05 Attack 0x0005 X X
0x06 Double Click 0x0005 X X
0x07 Take Object 0x0007 X X
0x08 Drop Object 0x000E X X
0x09 Single Click 0x0005 X X
0x0A Edit 0x000B X
0x0B Edit Area 0x010A ? ?
0x0C Tile Data dynamic
0x0D NPC Data 0x0003 ? ?
0x0E Edit Template Data dynamic ? ?
0x0F Paperdoll (Old) 0x003D ? ?
0x10 Hue Data 0x00D7 ? ?
0x11 Mobile Stats dynamic X X
0x12 God Command dynamic X X
0x13 Equip Item Request 0x000A X X
0x14 Change Elevation 0x0006 X
0x15 Follow 0x0009 ? X
0x16 Request Script Names 0x0001 X
0x17 Script Tree Command dynamic X
0x18 Script Attach dynamic X
0x19 NPC Conversation Data dynamic X
0x1A Show Item dynamic X X
0x1B Login Confirm 0x0025 X X
0x1C Text dynamic X X
0x1D Destroy 0x0005 X
0x1E Animate 0x0004 ? ?
0x1F Explode 0x0008 X
0x20 Teleport 0x0013 X X
0x21 Block Movement 0x0008 X X
0x22 Accept Movement/Resync Request 0x0003 X
0x23 Drag Item 0x001A X X
0x24 Open Container 0x0007 X X
0x25 Object to Object 0x0014 X X
0x26 Old Client 0x0005 X
0x27 Get Item Failed 0x0002 X X
0x28 Drop Item Failed 0x0005 X
0x29 Drop Item OK 0x0001 X
0x2A Blood 0x0005 ? ?
0x2B God Mode 0x0002 X
0x2C Death 0x0002
0x2D Health 0x0011 ?
0x2E Equip Item 0x000F X X
0x2F Swing 0x000A X X
0x30 Attack OK 0x0005 X
0x31 Attack End 0x0001 ?
0x32 Hack Mover 0x0002 X
0x33 Group 0x0002 ?
0x34 Client Query 0x000A X X
0x35 Resource Type 0x028D
0x36 Resource Tile Data dynamic X
0x37 Move Object 0x0008 X
0x38 Follow Move 0x0007 ?
0x39 Groups 0x0009 ?
0x3A Skills dynamic X
0x3B Accept Offer dynamic X
0x3C Container Contents dynamic X X
0x3D Ship 0x0002 ? X
0x3E Versions 0x0025 ?
0x3F Update Statics dynamic X
0x40 Update Terrain 0x00C9 X
0x41
Update Tiledata
 dynamic X
0x42 Update Art dynamic X
0x43 Update Anim 0x0229 X
0x44 Update Hues 0x02C9 X
0x45 Ver OK 0x0005 X
0x46 New Art dynamic X
0x47 New Terrain 0x000B X
0x48 New Anim 0x0049 X
0x49 New Hues 0x005D X
0x4A
Destroy Art
 0x0005 X
0x4B Check Ver 0x0009 X
0x4C Script Names dynamic ?
0x4D Script File dynamic ? ?
0x4E Light Change 0x0006 X X
0x4F Sunlight 0x0002 X X
0x50 Board Header dynamic X
0x51 Board Message dynamic X
0x52 Post Message dynamic X
0x53 Login Reject 0x0002 X X
0x54 Sound 0x000C X X
0x55 Login Complete 0x0001 X X
0x56 Map Command 0x000B X
0x57 Update Regions 0x006E X
0x58
New Region
 0x006A X
0x59 New Context FX dynamic X
0x5A Update Context FX dynamic X
0x5B Game Time 0x0004 X X
0x5C Restart Ver 0x0002 X
0x5D Pre Login 0x0049 X X
0x5E Server List dynamic ? ?
0x5F Add Server 0x0031 ? ?
0x60 Server Remove 0x0005 ? ?
0x61 Destroy Static 0x0009 X
0x62 Move Static 0x000F X
0x63 Area Load 0x000D X
0x64 Area Load Request 0x0001 X
0x65 Weather Change 0x0004 X X
0x66 Book Contents dynamic X
0x67 Simple Edit 0x0015 X
0x68 Script LS Attach dynamic ? ?
0x69 Friends dynamic ? ?
0x6A Friend Notify 0x0003 ?
0x6B Key Use 0x0009 ? ?
0x6C Target 0x0013 X
0x6D Music 0x0003 X X
0x6E Animation 0x000E X X
0x6F
Trade
 dynamic X
0x70
Effect
 0x001C X X
0x71 Bulletin Board dynamic X
0x72 Combat 0x0005 X
0x73 Ping 0x0002 X
0x74 Shop Data dynamic X X
0x75 Rename MOB 0x0023 X X
0x76
Server Change
 0x0010 ?
0x77 Naked MOB 0x0011 X X
0x78 Equipped MOB dynamic X X
0x79 Resource Query 0x0009 ? ?
0x7A Resource Data dynamic ? ?
0x7B Sequence 0x0002 ?
0x7C Object Picker dynamic X X
0x7D Picked Object 0x000D X X
0x7E
God View Query
 0x0002 ?
0x7F
God View Data
 dynamic X
0x80 Account Login Request 0x003E X X
0x81 Account Login OK dynamic X X
0x82 Account Login Failed 0x0002 X X
0x83 Account Delete Character 0x0027 X X
0x84
Change Character Password
 0x0045 X
0x85 Delete Character Failed 0x0002 X X
0x86 All Characters dynamic X X
0x87 Send Resources dynamic X
0x88 Open Paperdoll 0x0042 X X
0x89 Corpse Equipment dynamic X X
0x8A
Trigger Edit
 dynamic ?
0x8B Display Sign dynamic X
0x8C Server Redirect 0x000B X X
0x8D Unused3 dynamic X X
0x8E Move Character dynamic ? ?
0x8F Unused4 dynamic X X
0x90 Open Course Gump 0x0013 X X
0x91 Post Login 0x0041 X X
0x92 Update Multi dynamic X
0x93 Book Header 0x0063 X X
0x94 Update Skill dynamic X
0x95 Hue Picker 0x0009 X
0x96
Game Central Monitor
 dynamic ?
0x97 Move Player 0x0002 ? X
0x98 MOB Name dynamic X
0x99 Target Multi 0x001A X X
0x9A Text Entry dynamic X
0x9B Request Assistance 0x0102 X X
0x9C
Assist Request
 0x0135 ?
0x9D
GM Single
 0x0033
0x9E Shop Sell dynamic X X
0x9F Shop Offer dynamic X X
0xA0 Server Select 0x0003 X X
0xA1 HP Health 0x0009 X X
0xA2 Mana Health 0x0009 X X
0xA3 Fat Health 0x0009 X X
0xA4 Hardware Info 0x0095 X X
0xA5 Web Browser dynamic X X
0xA6 Message dynamic X
0xA7 Request Tip 0x0004 X
0xA8 Server List dynamic X X
0xA9 Character List dynamic X X
0xAA Current Target 0x0005 X X
0xAB String Query dynamic X X
0xAC String Response dynamic X X
0xAD Speech Unicode dynamic X X
0xAE Text Unicode dynamic X X
0xAF Death Animation 0x000D X X
0xB0 Generic Gump dynamic X X
0xB1 Generic Gump Trigger dynamic X X
0xB2 Chat Message dynamic X X
0xB3 Chat Text dynamic X X
0xB4 Target Object List dynamic ? X
0xB5 Open Chat 0x0040 X
0xB6 Help Request 0x0009 X
0xB7 Help Text dynamic X
0xB8 Character Profile dynamic X
0xB9 Features 0x0003 X X
0xBA Pointer 0x0006 X X
0xBB Account ID 0x0009 X
0xBC Game Season 0x0003 X X
0xBD Client Version dynamic X
0xBE Assist Version dynamic ?
0xBF Generic Command dynamic X
0xC0 Hued FX 0x0024 X X
0xC1 Localized Text dynamic X X
0xC2 Unicode Text Entry dynamic X
0xC3 Global Queue dynamic X X
0xC4 Semivisible 0x0006 X X
0xC5 Invalid Map 0x00CB X X
0xC6 Invalid Map Enable 0x0001 X X
0xC7 Particle Effect 0x0031 X X
0xC8 Change Update Range 0x0002 X
0xC9
Trip Time
 0x0006
0xCA
UTrip Time
 0x0006
0xCB Global Queue Count 0x0007 X X
0xCC Localized Text Plus String dynamic X X
0xCD Unknown God Packet 0x0001 ? X
0xCE IGR Client dynamic X X
0xCF IGR Login 0x004E X X
0xD0 IGR Configuration dynamic X
0xD1 IGR Logout 0x0002 X
0xD2 Update Mobile 0x0019 X X
0xD3 Show Mobile dynamic X X
0xD4 Book Info dynamic X
0xD5 Unknown Client Packet dynamic X X
0xD6 Mega Cliloc dynamic X X
0xD7 AOS Command dynamic X
0xD8 Custom House dynamic X X
0xD9 Metrics 0x010C X X
0xDA Mahjong dynamic X
0xDB Character Transfer Log dynamic X X


Item Meaning
Obsolete packets
Yes
X No
? Unknown