SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

Commission File Number: 333-13580

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____

Indicate by check mark whether by furnishing the information contained in this Form, the registrant is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82-

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• At March 31, 2006, Prodigy Infinitum (ADSL) services totaled 1.2 million, an increase of 82.4% compared with the first quarter of last year. During the quarter, 180 thousand services were added; 71.6% more than the first quarter of 2005. This growth was supported by commercial efforts related to Paquetes TELMEX (TELMEX Packages). During the quarter, billed line equivalents increased 31.8% and fixed lines in service increased 6.4%. Domestic long distance traffic increased 1.8%, outgoing international long distance increased 7% and local calls increased 0.2%.

• Consolidated revenues decreased 0.4% compared with the previous year mainly due to the reduction of the calling party pays rate. Total costs decreased 1.5%. The EBITDA margin was 45.3%, a decrease of 1.1 percentage point from 2005's first quarter, and the operating margin was 30.8%, an increase of 0.7 percentage point in the same period.

• In México, revenues decreased 2.3% compared with the first quarter of 2005 and costs and expenses decreased 3.5%. The EBITDA margin was 52.4% in the first quarter of 2006 and the operating margin was 37.4% compared with 53% and 36.6% in the first quarter of last year, respectively.

• In the first quarter, the operation in Brazil increased total revenues 5.2% compared with the first quarter of 2005, generating an EBITDA margin of 25.9% and an operating margin of 11.8%, compared with 24.5% and 10.1% in the first quarter of 2005.

• Consolidated investment in the first quarter rose to the equivalent of 318 million dollars.

• During the quarter, the company's consolidated net debt (3) increased the equivalent of approximately 302 million dollars, totaling 6.622 billion dollars at March 31.

• Net income was 7,593 million pesos in the first quarter, an increase of 12.8% compared with the same period of the previous year.

• Earnings per share in the quarter were 0.35 pesos and 0.65 dollars per ADR, increases of 20.7% and 35.4% compared with the same period of the previous year.

4.5 billion pesos Senior Notes: In January 2006, in financial markets outside of Mexico, TELMEX sold 4.5 billion pesos of 8.75% Senior Notes due 2016.

Increase of funds to purchase the company's own shares: On March 30, 2006, The Ordinary Shareholders' Meeting resolved to increase the amount of funds that can be allocated to purchase the company's own shares by 15 billion pesos. At that date, the balance was approximately 15,215 million pesos.

Acquisition of equity interest in CANTV: On April 3, 2006, TELMEX and América Móvil announced that through an equally owned joint venture they entered into an agreement with Verizon Communications, Inc. ("Verizon") to acquire Verizon's equity interest in Compañía Anónima Nacional Teléfonos de Venezuela (CANTV) for an aggregate purchase price of US$676.6 million in cash. The purchase price represents US$3.01 per ordinary CANTV share held by Verizon (or $21.10 per CANTV American Depositary Share held by Verizon. The joint venture will acquire Verizon's equity stake in CANTV indirectly through the purchase of a Verizon subsidiary holding company that holds all the CANTV ordinary shares and American Depositary Shares owned by Verizon. Verizon's equity stake in CANTV represents approximately 28.51% of the outstanding capital stock of CANTV. The purchase is subject to regulatory approvals and other conditions.

Revenues: In the first quarter, revenues from Teléfonos de México and its subsidiaries in Mexico and Latin America totaled 41,555 million pesos, 0.4% lower than the same period of 2005. The decrease was mainly due to lower revenues from calling party pays, measured service and international long distance. Of total consolidated revenues, voice revenues represented 76.9% and data transmission revenues represented 19.1%.

Costs and expenses: Costs and expenses in the first quarter totaled 28,756 million pesos, 1.5% lower than the same period of the previous year, mainly due to the decrease of interconnection costs as a result of the 10% reduction in the calling party pays rate and lower costs related to depreciation and amortization, international settlement, and prepaid cards.

EBITDA (1) and operating income: EBITDA (1) totaled 18,822 million pesos in the first quarter, a decrease of 2.8% compared with the same period of 2005. The EBITDA margin was 45.3%, 1.1 percentage point lower than the first quarter of 2005. Operating income totaled 12,799 million pesos, 2% higher than the first quarter of 2005. The operating margin was 30.8%, 0.7 percentage point higher than the operating margin in the first quarter of the previous year.

Comprehensive financing cost: Comprehensive financing cost was 984 million pesos in the quarter compared with 1,008 million pesos in the first quarter of 2005. This result was due to: (i) a decrease of 13% in net interest because of a lower cost of debt, (ii) a higher exchange loss from the impact of the first-quarter's exchange rate variation of 0.24 pesos per dollar; partially offset by the gain that hedges produced; and (iii) a gain in the monetary position of 599 million pesos during the quarter.

Majority net income: Majority net income totaled 7,593 million pesos in the first quarter, 12.8% higher than the same period of the previous year due to lower comprehensive financing cost and its effect on taxes. Earnings per share in the first quarter, based on the number of shares outstanding at March 31, 2006 (21,446,265,270 shares) was 0.35 pesos per share compared with 0.29 pesos per share in the same period of 2005 and earnings per ADR were 0.65 dollars compared with 0.48 dollars in last year's first quarter.

Investments: In the first quarter, consolidated investment was the equivalent of 318 million dollars, of which 76.1% was used for growth and modernization projects, 11.7% for operational support projects, 8.7% for operational needs and for 3.5% social telephony

Repurchase of shares: During the quarter, the company used 7,449 million pesos to repurchase 598,817,000 of its own shares.

Debt: Gross total debt at March 31 was the equivalent of 7.847 billion dollars, a reduction of 645 million dollars compared with the fourth quarter of 2005. Of total gross debt, 6.8% is short-term, 84.9% is in foreign currency that is fully hedged for the amount of 6.909 billion dollars of which 92.9% is related to hedges of dollars to pesos and the rest to hedges of dollars to reais. Also, 47.5% of gross total debt carries a fixed rate and by adding interest rate swaps for 15,900 million pesos at March 31, 2006 the percentage increases to 66%.

At March 31, 2006, the company's consolidated net debt (3) increased the equivalent of 302 million dollars during the quarter to a total of 6.622 billion dollars.

During the quarter, 6,653 million local calls were made, an increase of 0.2% compared with the first quarter of the previous year. The low growth in local calls was primarily due to intense competition from local and cellular operators.

In the first quarter, domestic long distance traffic rose to 4,374 million minutes, an increase of 1.8% compared with the same period of last year. International long distance outgoing minutes in the quarter totaled 467 million, an increase of 7% compared with the same period of the previous year. In the first quarter, incoming international long distance minutes totaled 1,650 million, an increase of 33%. The incoming-outgoing ratio was 3.5 in the first quarter and 2.8 in the same period of 2005.

Interconnection traffic totaled 9,015 million minutes in the quarter, 7.7% more than in the same period of the previous year. In the first quarter, calling party pays traffic increased 2.3% from a year ago. In the first quarter, traffic originated by the cellular system and terminated on TELMEX's network increased 7.4% compared with the same period of the previous year. Interconnection traffic generated by local and long distance operators increased 9.4%.

From January to March billed line equivalents* in the corporate data transmission market increased 31.8% compared with the same quarter of 2005, reaching 2.1 million billed line equivalents.

*Billed line equivalents of 64 Kbps.

In the first quarter, high speed Prodigy Infinitum service (ADSL) totaled 1 million 213 thousand customers, 82.4% higher than the same period of 2005. During the first quarter, 180 thousand Infinitum accounts were added. Total Internet access accounts including Prodigy Infinitum and dial-up were 2 million 237 thousand in the quarter, 20.6% higher than the first quarter of 2005.

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Revenues: In the first quarter, revenues from operations in Mexico totaled 30,298 million pesos, 2.3% lower than the same period of the previous year, mainly due to lower calling party pays and local revenues.

• Local: Local revenues totaled 13,736 million pesos, an annual decrease of 2.8% due to the decline in the average price of measured service of 6% in real terms, which was not offset by the increase in fixed lines.

• DLD: DLD revenues were 4,304 million pesos, a decrease of 0.8% compared with the same period of 2005, reflecting a decrease of 2.2% in average price per minute in real terms offset by DLD traffic growth of 1.8%.

• ILD: ILD revenues decreased 1.4% in the quarter compared with the same period of 2005, totaling 2,481 million pesos. ILD revenues from incoming traffic were 1,586 million pesos, 4.9% lower than the same period of 2005. The decline in the average price of 11.2% in real terms was not offset by ILD traffic growth of 7%. International settlement revenues totaled 894 million pesos, an increase of 5.3% compared with the first quarter of the previous year.

• Interconnection: Interconnection revenues in the first quarter were 3,891 million pesos, a decrease of 13.6%. Since January, the calling party pays rate decreased 10% to 2.03 pesos per minute, 76% of which goes to the cellular companies. Additionally, the interconnection rate for long distance operators decreased 12.6% in peso terms in part because of the exchange rate.

• Corporate networks: Revenues from services related to data transmission through private and managed networks totaled 2,584 million pesos in the first quarter, an increase of 2.7% due to more billed line equivalents in service compared with the first quarter of the previous year.

• Internet: Revenues from services related to the Internet platform rose 12.1% in the first quarter to 2,155 million pesos due to the increase in the number of Prodigy Infinitum (ADSL) customers.

Costs and expenses: In the first quarter, total costs and expenses from the operations in Mexico were 18,965 million pesos, a decrease of 3.5% compared with the same period of the previous year. This decrease was due to lower cost of sales and services, lower interconnection costs related to the calling party pays rate, and lower depreciation and amortization charges.

• Cost of sales and services: In the first quarter, cost of sales and services totaled 6,975 million pesos, a decrease of 0.1% resulting from efforts directed at improving operations and use of resources, which have reduced costs related to materials and international settlement. Excluding the change in accounting policy for PC's sold in 2005, these costs would have decreased 1.7%

• Commercial, administrative and general: Commercial, administrative and general expenses increased 3.3% to 4,642 million pesos in the first quarter due to higher advertising and systems expenses.

• Transport and interconnection: In the first quarter, transport and interconnection costs totaled 2,811 million pesos, a decrease of 9.1% due to the reduction of the calling party pays rate, the main component of this item.

• Depreciation and amortization: In the quarter, depreciation and amortization decreased 10.9% to 4,537 million pesos due to a lower level of assets to be depreciated and less impact from restatement of the value of fixed assets.

EBITDA (1) and operating income: EBITDA (1) totaled 15,870 million pesos in the first quarter, a decrease of 3.6%. The EBITDA margin was 52.4%; a decrease of 0.6 percentage point compared with the first quarter of 2005. Operating income totaled 11,333 million pesos, 0.3% lower than the first quarter of 2005, and the operating margin was 37.4%, 0.8 percentage point higher than the first quarter of 2005.

Investments: In Mexico total investments were 136 million dollars, of which 71.8% was used for growth and modernization projects, 18% for operational support projects, 8.1% for social telephony and 2.1% for operating needs.

Debt: In the first quarter, gross total debt was the equivalent of 7.107 billion dollars, a decrease of 693 million dollars. Of total gross debt, 5.5% is short-term, 84.1% is in foreign currency that is fully hedged, and 47% carries a fixed rate (67.4% considering interest rate swaps).

At March 31, 2006 net debt (3) in Mexico increased the equivalent of 256 million dollars during the quarter to a total of 6.162 billion dollars.

In the first quarter, revenues totaled 2,037 million reais, an increase of 5.2% compared with the same period of the previous year. Costs and expenses in the quarter increased 3%, totaling 1,792 million reais. During the quarter, Embratel signed a commercial agreement with Net Serviços de Comunicação to offer voice, data and video services in one package. This service was launched March 21 and by March 31 had sold 6,500 packages. Embratel also increased its corporate data customer base, reaching 1.8 million 64 Kbps billed line equivalents. The increase in total costs and expenses was mainly due to an increase in charges related to FUST (Telecommunications Service Universal Fund), to the revised service concession, and to increased maintenance and equipment costs (handsets) generated by higher local service sales, partially offset by decreased interconnection costs mainly from the reduction of local access rates (TU-RL). Operating income and EBITDA (1) totaled 241 and 528 million reais, respectively, with annual increases of 23% and 11.1%, respectively. The operating margin was 11.8% and the EBITDA margin was 25.9%.

In the first quarter, revenues from the operations in Chile totaled 16,418 million Chilean pesos, 2.1% higher than the previous year. The voice business, representing 67.4% of total revenues, benefited from higher local traffic levels. Costs and expenses totaled 15,613 million Chilean pesos, 0.2% higher than the first quarter of last year. Transport and interconnection decreased 0.7%, and cost of sales and services increased 4.9%. Operating income reached 805 million Chilean pesos compared with 496 million Chilean pesos in the same quarter of 2005. The operating margin was 4.9% in the first quarter of 2006 compared with an operating margin of 3.1% in the same period of 2005. EBITDA (1) in the quarter was 3,426 million Chilean pesos compared with 3,138 million Chilean pesos in the same period of 2005 with margins of 20.9% and 19.5%, respectively.

In the first quarter, revenues from the operations in Argentina totaled 83 million Argentinean pesos, 25.1% higher than the same period of 2005. Operating costs and expenses increased 40% and totaled 88 million Argentinean pesos in the first quarter due to higher transport and interconnection cost, depreciation, and advertising expenses. In the quarter, EBITDA (1) totaled 7 million Argentinean pesos, compared with 11 million Argentinean pesos in the same period of 2005. The EBITDA margin for the quarter was 8% compared with 17% in last year's first quarter.

Revenues from these operations during the first quarter totaled 42,068 million Colombian pesos, 86.6% higher than the same period of 2005 mainly due to the addition of several corporate customers. Costs and expenses increased 46.5%, totaling 28,876 million Colombian pesos. Depreciation increased 35.7% in the quarter due to more acquisition of telecommunications equipment. In the quarter, operating income and EBITDA (1) totaled 13,192 and 20,469 million Colombian pesos, respectively, with margins of 31.4% and 48.7%, respectively.

In the first quarter, revenues from operations in Peru totaled 51 million New Soles, 16% higher than the same period of the previous year. The voice business, which represented 64.1% of total revenues, increased 13.2% due to growth in local traffic, mainly from the increase in digital trunks serving the corporate market. Costs and expenses in the quarter increased 10.8% because depreciation increased 13.3%. Operating income for the quarter totaled 1.5 million New Soles compared with an operating loss of 0.7 million New Soles in the same period of 2005. The operating margin for the quarter was 3%. EBITDA (1) totaled 14 million New Soles in the first quarter, producing a margin of 28.3% compared with EBITDA (1) of 11 million New Soles and a margin of 24.3% in the first quarter of last year.