I'm going by a quick reference that has been reliable to me so far:
386 Deoxys
a) English/Japanese, level 30+, ID no: Original Owner, OT: Original Owner, in original ball, ticket acquired from various events
b) English, level 70+, ID no: 00010, OT: SPACE C, in pokeball, given away at Houston Space Center Event
c) Netherlands (DEOXYS still I guess), level 70+, ID no: 28606, OT: DOEL, in pokeball, given away at the TV Toys Museum Destiny Deoxys movie event
d) Japanese, level 50+, ID no: 07147, OT: 10th, in cherish ball, has classic ribbon, given away at Japanese Movie Event
FAKES: Any caught Deoxys under level 30. Also, any English Deoxys caught in Hoenn because the Aurora ticket was never distributed again by time Emerald came out (I've heard it may be caught in Hoenn if you could Wondercard it, but I need to get some more people to test and verify this v_v). Events are set as non shiny but island Deoxys may be shiny.