Part Marking search site

Occasionally we need to verify that the part in my hand is the MPN it is supposed to be. Or I need to figure out what a part is because the part number label is damaged. I had been using smdmark (dot) com with some success, but it appears to be down. It's also not the greatest. Is there a better site to use? Also, I do not understand the manufacturers that mark their ICs, yet the datasheets have zero information on what the PART MARKING should be. Marking the part does no good if the Datasheet doesn't confirm the marking. Whenever AOI encounters a different marking than what is saved in the system, I essentially have to "prove" it's the valid part. 90% of the information on those datasheets matters to 1% of the people involved with the product. Yet the information that 90% of the people would find useful, is either well hidden, or not included. I really wish there was a standard format like MSDS sheets. *rant over*

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