─────── § 04. NPA RECORD · 231 · FOLIO 0033 OF 0801 ──────────────
231
United States NPA Record
Area code 231 was created in 1999 as a split from 616 to serve the northwestern Lower Peninsula of Michigan, including Muskegon, Traverse City, and Cadillac.
Area code 231 was created in 1999 as a split from 616 to serve the northwestern Lower Peninsula of Michigan, including Muskegon, Traverse City, and Cadillac.
IN SERVICEFirst record · 1999
§ 04.05Event Summary
split · 2
§ 04.06
Documentary Record · 2 events
CHRONOLOGICAL ORDER
1999-01-01
split
NPA 231 split from 616
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1999-06-01
split
Creation of area code 231 by split from 616
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