You only have until July 31 to
register your cell number at the Attorney General's website, or by calling
Chris Koster's office at
Koster says so far 175,000 Missourians have put their numbers into the state's database since June 14th. Everybody signing up by July 31 will be protected from annoying sales calls by October 1.
There will be a second sign-up period between August 1 and November 1. Those people won't be protected until January 1.
The attorney general's website is ago.mo.gov.