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537 Area Code

Bulgaria

Detailed Information

Related Area Codes:5363, 5364, 5365, 5366, 5379, 538

Area Codes by Administrative Region

Blagoevgrad Province Burgas Province Dobrich Province Gabrovo Province Haskovo Province Kardzhali Province Kyustendil Province Lovech Province Montana Province Pazardzhik Province Pernik Province Pleven Province Plovdiv Province Razgrad Province Ruse Province Shumen Province Silistra Province