Filed by Verizon Communications Inc.

Pursuant to Rule 425 under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934

Subject Company: MCI, Inc.

Commission File No.: 001-10415

Verizon Acquisition of MCI

Safe Harbor Statement

NOTE: This presentation contains statements about expected future events and financial results that are forward-looking and subject to risks and uncertainties. For those statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. The following important factors could affect future results and could cause those results to differ materially from those expressed in the forward-looking statements: a significant change in the timing of, or the imposition of any government conditions to, the closing of the transaction; actual and contingent liabilities; and the extent and timing of our ability to obtain revenue enhancements and cost savings following the transaction. Additional factors that may affect the future results of Verizon and MCI are set forth in their respective filings with the Securities and Exchange Commission, which are available at www.verizon.com/investor and www.mci.com/about/investor_relations/sec/.

Verizon intends to file a registration statement, including a proxy statement of MCI, and other materials with the Securities and Exchange Commission (“SEC”) in connection with the proposed transaction. We urge investors to read these documents when they become available because they will contain important information. Investors will be able to obtain free copies of the registration statement and proxy statement, as well as other filed documents containing information about Verizon and MCI, at www.sec.gov, the SEC’s website. Investors may also obtain free copies of these documents at www.verizon.com/investor, or by request to Verizon Communications Inc., Investor Relations, 1095 Avenue of the Americas, 36th Floor, New York, NY 10036. Free copies of MCI’s filings are available at www.mci.com/about/investor_relations, or by request to MCI, Inc., Investor Relations, 22001 Loudoun County Parkway, Ashburn, VA 20147.

Verizon, MCI, and their respective directors, executive officers, and other employees may be deemed to be participants in the solicitation of proxies from MCI shareowners with respect to the proposed transaction. Information about Verizon’s directors and executive officers is available in Verizon’s proxy statement for its 2004 annual meeting of shareholders, dated March 15, 2004. Information about MCI’s directors and executive officers is available in MCI’s annual report on Form 10-K for the year ended December 31, 2004. Additional information about the interests of potential participants will be included in the registration statement and proxy statement and other materials filed with the SEC.

2

Straightforward, Smart Deal

Focused on the Enterprise market Verizon will be better positioned Ensures solid competitor

Continuity for critical government services, national defense and homeland security Reliability of IP backbone network

3

Driven by Technology

Indicative of continuing evolution of telecom industry Not transformational to industry; rather done as a result of ongoing transformation Industry restructuring will continue

4

Robust Competition

Customers have choices: wireless, cable, VoIP, other CLECs, e-mail, IM

Industrywide decrease in wireline minutes and usage POTS-only company would become obsolete Customers driving market

5

Verizon Transformation

Introduction of new broadband services

Iobi VoiceWing Verizon One Phone

FTTP

Video in the future Wireless products

Moving the industry forward

6

MCI Capabilities

Broad client reach with tenured sales force Strong customer relationships Expansive global network Extensive IP-centric product portfolio Innovative culture

7

A Winning Combination

Greater financial resources

Complementary strengths ensure VZ/MCI as stable, viable supplier Continued investment in MCI’s IP backbone network Robust, advanced set of services New, capable competitor

8

Consumer Benefits

Verizon’s continued transformation into wireless and broadband company Combined company can create platform to support broad set of multimedia communications and applications Competing, reliable IP backbone Choice will still remain

9

US Benefits

Critical domestic networks are robust and advanced Owned and operated by US company Strong US-based network and service provider, placing US in telecom leadership role

10

Verizon Communications Inc. (Verizon) intends to file a registration statement, including a proxy statement of MCI, Inc. (MCI), and other materials with the Securities and Exchange Commission (SEC) in connection with the proposed transaction. We urge investors to read these documents when they become available because they will contain important information. Investors will be able to obtain free copies of the registration statement and proxy statement, as well as other filed documents containing information about Verizon and MCI, at www.sec.gov, the SEC’s website. Investors may also obtain free copies of these documents at www.verizon.com/investor, or by request to Verizon Communications Inc., Investor Relations, 1095 Avenue of the Americas, 36^th Floor, New York, NY 10036. Free copies of MCI’s filings are available at www.mci.com/about/investor_relations, or by request to MCI, Inc., Investor Relations, 22001 Loudoun County Parkway, Ashburn, VA 20147.

Verizon, MCI, and their respective directors, executive officers, and other employees may be deemed to be participants in the solicitation of proxies from MCI shareholders with respect to the proposed transaction. Information about Verizon’s directors and executive officers is available in Verizon’s proxy statement for its 2005 annual meeting of shareholders, dated March 21, 2005. Information about MCI’s directors and executive officers is available in MCI’s annual report on Form 10-K for the year ended December 31, 2004. Additional information about the interests of potential participants will be included in the registration statement and proxy statement and other materials filed with the SEC.

NOTE: This document contains statements about expected future events and financial results that are forward-looking and subject to risks and uncertainties. For those statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. The following important factors could affect future results and could cause those results to differ materially from those expressed in the forward-looking statements: a significant change in the timing of, or the imposition of any government conditions to, the closing of the transaction; actual and contingent liabilities; and the extent and timing of our ability to obtain revenue enhancements and cost savings following the transaction. Additional factors that may affect the future results of Verizon and MCI are set forth in their respective filings with the Securities and Exchange Commission, which are available at www.verizon.com/investor and www.mci.com/about/investor_relations/sec/.