What does a DB Schenker tracking number look like?

It depends on the transport mode. A land STT is a 12 to 15 character alphanumeric string (e.g. ESBCN223344567), an air waybill is an 11-digit number with a three-digit airline prefix and a hyphen (e.g. 020-12345678), and a sea container number is four letters plus seven digits (e.g. MSCU1234567). Ocean shipments may also use a House Bill of Lading number.