EXHIBIT 99.1 SIGNATURES FOR FORM 4 VERIZON COMMUNICATIONS INC. By: /s/ John W. Diercksen ----------------------------------------------------- Name: John W. Diercksen Title: Executive Vice President - Strategy, Development and Planning Date: April 8, 2011 VERIZON HOLDINGS INC. By: /s/ John W. Diercksen ----------------------------------------------------- Name: John W. Diercksen Title: Executive Vice President - Strategy, Development and Planning Date: April 8, 2011