CitysDirectory
City of Detroit
Directory area code 313 and prefix 531 available at City of Detroit
Directory Numbers
+1 (313) 531-XXXX
Here are the components:
Country Code: +1 (both the USA and Canada share the same country code).
Area Code: A 3-digit code that designates a specific geographic area or region.
Prefix: A 3-digit code that narrows the location within the area covered by the area code.
Line Number: A 4-digit number unique to the individual or business within that prefix.
313-531-00**
313-531-01**
313-531-02**
313-531-03**
313-531-04**
313-531-05**
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313-531-07**
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313-531-22**
313-531-23**
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313-531-90**
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313-531-92**
313-531-93**
313-531-94**
313-531-95**
313-531-96**
313-531-97**
313-531-98**
313-531-99**
Complete Phone Number
e.g. 111-222-3333
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