Enter a number in E.164 format (for example +441952612345)
The prefix +81 3840 serves the region of Tokyo.
Known carrier for +81 3840: "NTT".
Mapped location for +81 3840 is (35.6768601, 139.7638947).
Ringbat creates area-code pages to provide details when only part of a number is available.
Country: 🇯🇵 JP
Country Code: +81
Carrier: NTT
Prefix: 3840
Location: Tokyo
Coords: 35.6768601, 139.7638947
Area Code Page: +81 3840
Comments: Disabled for area-code pages
Example: +81 3840 *** ***
If you have a full number, use the search box above to view the number-specific page.
+81 3840 is an area code/prefix that appears to be associated with Tokyo. 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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