20283131

• 2028313 — GS1-8 prefix & item reference
• 1 — Check digit (confirms the number is well-formed)

EAN-8 ✓ Valid check digit

• 20277246 — Cien
• 20277253 — Cien #2
• 20321079 — Cien #4
• 20334338 — Cien #5
• 20334345 — Cien #6
• 20350406 — Cien #7

Cien #3

Search for Cien #3 on Amazon (or for the code 20283131)