MEID Manufacturer Table
This table lists MEID manufacturer codes and serial number ranges. All entries are in the decimal format, which is explained on the CDMA Hardware IDs page.
To determine the manufacturer given an MEID, break it into a "Manufacturer Code" block and "Serial Number" block. Look up the (hex) manufacturer code in the table, then determine where your serial number falls in the serial number column (both hex and decimal included).
Note: This list was last updated in April, 2010. I no longer work in telecom and do not anticipate updating this again.