I called 1-888-382-1222. After I entered my phone number, the voice said
> the calls would stop in 3 weeks, My understanding is that it is 3 months.
Although the "refresh" and "scrubbing" frequency from the FTC/FCC DNC Registry was originally set at 3 months, it was changed such that those telemarketers who must comply with the DNC Registry must "scrub" their lists every 30 days with the latest DNC database information.
Randy Hayes