Form: EFFECT

Notice of Effectiveness

December 14, 2010

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Notice of Effectiveness

Effectiveness Date: December 14, 2010
Accession Number: 0001193125-10-280243
Submission Type: POS AM
CIK: 0001406666
Company Name: CALIX, INC
File Number: 333-170282