When you sign up with Verizon, it sends out a tiny-print leaflet to customers informing them (under the vague title above) that they'll share subscribers' personal information unless you explicitly opt out. It does not provide instructions on how to do so without calling them, customers report that calling them is no help, and even when you log into your account, Verizon has made the online copies of this legalese document inaccessible to some of its own subscribers.
I can get to mine, so here it is: DownloadDocument.pdf.
Here are detailed instructions:
Then click on the "My Profile" tab.
Scroll down to the "Phone Controls" section. There, click on "View/Edit Privary (CPNI) Settings."
On the next page, click the radio button beneath "Do not share my CPNI" in the row for "All Cell Phone Numbers." Then click "Submit."
Verizon's website should serve a popup confirming the change. Click "Done."
Update: Verizon got in touch to say it's been sending these out to new subscribers since 2007--I've been with them just a month or two--and directs us to an official blog post on the matter. I've updated this post to make it clear that Verizon shares, rather than sells, the information with affiliates and partners.
Update 2: A claimed Verizon insider writes in to say it's really not as bad as it looks.
I doubt this will make the website, but here's my take...
I work for Verizon Wireless, and here's the scoop. When you sign up for service with Verizon Wireless your information is taken by number crunching geeks and when you're going over your text messaging, minutes, etc, a report is generated and those reports trickle down to a store level where they call and ask if you'd like to increase your text messaging, minutes, etc, to avoid overages charges. The reason why its for all VZW affiliates is because its not a VZW number cruncher usually, from what I understand, but some sort of number cruncher for one of the other companies that helps with the number crunching.
As far as I can tell, VZW just has to cover their butts when they sign you up, because TECHNICALLY VZW and Verizon are seperate companies and sharing info with a seperate company (even if its a member of a group of companies under one big title/group) is illegal according to the FCC.
FYI ATT does it to. At VZW those calls are called OCM or 5 Star calls. At ATT they're ROCCS calls. You think some guy in a store somewhere is printing all of those flyers and making all of those calls to let you know that you went over your minutes? I promise you, I work in a store, and I couldnt care less if you go over your minutes. Thats your own fault.
But thats what the deal is.