. . . EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY SUBSIDIARY DBA JURISDICTION OF INCORPORATION - ---------- --- ----------------------------- Alaska Communications Systems Holdings, Inc. Delaware ACS of the Northland, Inc. ACS, ACS Local Service Alaska ACS of Alaska, Inc. ACS, ACS Local Service Alaska ACS of Fairbanks, Inc. ACS, ACS Local Service Alaska ACS of Anchorage, Inc. ACS, ACS Local Service Delaware ACS Wireless, Inc. ACS Wireless Alaska ACS Long Distance, Inc. ACS, ACS Long Distance Alaska ACS Internet, Inc. Delaware ACS Messaging, Inc. Alaska ACS InfoSource, Inc. Alaska ACS of Alaska License Sub, Inc. Alaska ACS of the Northland License Sub, Inc. Alaska ACS of Fairbanks License Sub, Inc. Alaska ACS of Anchorage License Sub, Inc. Alaska ACS Wireless License Sub, Inc. Alaska ACS Long Distance License Sub, Inc. Alaska ACS Service, Inc. Alaska