ATN International, Inc.
Oct 26, 2006

Investor Conference Call Scheduled

Salem, MA (October 26, 2006) — Atlantic Tele-Network, Inc. (NASDAQ: ATNI) announced today that it will report results for the third quarter ended September 30, 2006 on Tuesday, October 31, 2006, after market close.

In addition, the Company will host a conference call to discuss its third quarter results with investors at 10:00 a.m. Eastern Time (ET) on Wednesday, November 1, 2006. Dial-in information for the conference call is as follows:

Call Date: November 1, 2006
Call Time: 10:00 a.m. (ET)
Call Dial-in: 877-502-9276 (US/Canada)
913-981-5591 (International)
Call Passcode: 5504813

A replay of the conference call will be available as follows:

Replay Dates: November 1, 2006, 1:00 p.m. (ET) until
November 6, 2006, 11:59 p.m. (ET)
Replay Dial-in: 888-203-1112 (US/Canada)
719-457-0820 (International)
Replay Passcode: 5504813

About Atlantic Tele-Network
Atlantic Tele-Network, Inc. is a telecommunications company with corporate offices in Salem, Massachusetts and St. Thomas, U.S. Virgin Islands. Its principal subsidiaries include: Guyana Telephone and Telegraph Company, Limited, which is the national telephone service provider in the Cooperative Republic of Guyana for all local, long-distance and international service, as well as the largest cellular service provider; Commnet Wireless, LLC, which provides voice and data wireless roaming services for U.S. and international carriers in rural areas throughout the United States; Sovernet, Inc., which provides wireline voice and data services to businesses and homes across Vermont; and Choice Communications, LLC, which provides wireless television and wireless broadband services, as well as dial-up internet services in the United States Virgin Islands. The Company also owns 44% of Bermuda Digital Communications Ltd., which, under the Cellular One name, is the largest provider of cellular voice and data services in Bermuda.

Atlantic Tele-Network, Inc.
Michael T. Prior
Chief Executive Officer
978-619-1300

Justin D. Benincasa
Chief Financial Officer
978-619-1300