Maybe the answer varies depending on where you are located, but for me, in one case, Verizon buried the cable and on a second install, Verizon hired an outside contractor when they couldn't get to it quickly enough. Also, my first install was just a fairly small cable that was buried. In the second case, they ran about an inch in diameter flexible plastic conduit to my house and then pulled the fiber through that. I didn't pay for either one. That was quite a while ago though, so maybe that's changed.
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