There's a free Cisco Export Compliance online tool to check the Export Control Classification Number (ECCN), Harmonized System (HS) and other info on various Cisco products. This is useful when dealing with a courrier or customs in other countries.
In the example, I tried to search for the Export Compliance codes for a Cisco 4331 ISR router.
Type Product ID: ISR4331/K9 > click Search (bottom page).
You can also download the result into an excel file (XLSX).