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Our database confirms that +81 4389 is assigned to Kisarazu, Chiba.
The prefix +81 4389 is operated by "NTT".
Coordinates for +81 4389 are (35.3810808, 139.9247334).
These pages show detailed information for area codes, even when the full number is unknown.
Country: 🇯🇵 JP
Country Code: +81
Carrier: NTT
Prefix: 4389
Location: Kisarazu, Chiba
Coords: 35.3810808, 139.9247334
Area Code Page: +81 4389
Comments: Disabled for area-code pages
Example: +81 4389 *** ***
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+81 4389 is an area code/prefix that appears to be associated with Kisarazu, Chiba. It may be assigned to multiple phone numbers within that region.
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Carrier information for this prefix: NTT. In some cases multiple carriers may use similar prefixes.
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