Enter a number in E.164 format (for example +441952612345)
Users searching for +81 1638 will find it primarily covers Japan.
Known carrier for +81 1638: "NTT".
Ringbat database places +81 1638 at coordinates (36.5748441, 139.2394179).
Use this area-code page to access location, carrier, and prefix info for partial phone numbers.
Country: 🇯🇵 JP
Country Code: +81
Carrier: NTT
Prefix: 1638
Location: Japan
Coords: 36.5748441, 139.2394179
Area Code Page: +81 1638
Comments: Disabled for area-code pages
Example: +81 1638 *** ***
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+81 1638 is an area code/prefix that appears to be associated with Japan. It may be assigned to multiple phone numbers within that region.
Yes — use Ringbat's number search to look up a full number. This area-code page helps when only part of a number is known.
Carrier information for this prefix: NTT. In some cases multiple carriers may use similar prefixes.
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