EXHIBIT 23-a CONSENT OF INDEPENDENT AUDITORS We consent to the incorporation by reference in the Registration statement (Form S-3 No. 333-37513) of Pacific Bell and in the related Prospectus of our report dated February 12, 1999, with respect to the financial statements and schedules of Pacific Bell included in this Annual Report (Form 10-K) for the year ended December 31, 1998. ERNST & YOUNG LLP San Antonio, Texas March 8, 1999