What is 'Registered Express'?

[Frank_Rizzo]

A customer says he sent me a document via 'registered express'. He quotes a reference number.

Is there somewhere I can go to see the tracking status of the document?

The format of the reference number is RR **** *** *CY

The document would have originated in Cyprus.

[choster]

Doesn't appear to be much out there: www.pio.gov.cy/dps/ .