Pacbell isn't part of Verizon. We here in California are part of Ma Bell aka AT&T.
When Verizon became the premier telco long before AT&T got self made with BellSouth they acquired GTE so they are part of the landscape of California telco. If you look carefully at the deal assets had to switched back & forth so that the deal could pass anti-trust. No doubt some CA municipalities got switched around and some former PacBell assets wound up in Verizon hands too as part of the deal and some GTE assets went to Pacbell. What happened after is irrelevant.. to how Verizon.. a former northeast telco wound up with West Coast telecom wireline assets in the last mile.