AT&T spokeswoman Natasha Collins said the beaver-caused outage affected Ashdown, Bodcaw, Hope and Nashville.
Emergency officials say 911 calls had to be rerouted. A manager at a Hope Wal-Mart says customers could not pay with debit cards and that credit cards could be used for only small amounts.
A bill paying center was knocked out, and area gas stations were only able to accept cash.
Service went out at about 6:30 a.m. and was restored a little before 5 p.m.