Where is area code 986?

As noted, there is no exchange that has 986 as an area code.

Close matches include:

968 - international code for Oman (6 & 8 transposed)

996 - international code for Kyrgyzstan (second digit 9 instead of 8)

689 - international code for French Guiana (numbers reversed)

985 - New Orleans, LA (last digit 5 instead of 6)

989 - Saginaw, MI (last digit 9 instead of 6)

786 - Miami, FL (first digit 7 instead of 9)