Format: +358 18 XXXXX(X) and +358 457 XXX XXXX for regional GSM/3G operator Ålands Mobiltelefon (ÅMT).
Dominant operator on the island is the regional company Mariehamns Telefon Ab.
ÅMT has a domestic roaming agreement at no cost to the user with operator Elisa in mainland Finland.
This agreement is reciprocal except for Elisa's prepaid customers under the Saunalahti brand.
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