The Nintendo DSi uses the same title scheme and update servers as the Wii. The following titles have been seen:
00030004: 484e474a, 4b41414a, 4b41444a, 4b414d4a, 4b44394a, 4b47554a, 4b4d394a, 4b4d464a, 4b4d534a, 4b4e444a, 4b4e524a, 4b50364a, 4b54504a, 4b55574a 00030005: 484e494a 0003000f: 484e4c4a, 484e4341 00030015: 484e464a 00030017: 484e414a
As with on the Wii, the TMD for these titles may be fetched at e.g. http://nus.cdn.t.shop.nintendowifi.net/ccs/download/0003000f484e4c4a/tmd.