There's actually six variants of this:
char description unicode html html entity utf-8
· Middle Dot U+00B7 · · C2 B7
• Bullet U+2022 • • E2 80 A2
‧ Hyphenation Point U+2027 ₁ E2 80 A7
∙ Bullet Operator U+2219 ∙ E2 88 99
● Black Circle U+25CF ● E2 97 8F
⬤ Black Large Circle U+2B24 ⬤ E2 AC A4
Depending on your viewing application or font, the Bullet Operator may seem very similar to either the Middle Dot or the Bullet.