Japan country code +81 — call Japan & get a number.
In a country where a misdialed digit feels like a broken promise, precision matters. Here are the exact +81 formats from the US, UK, Australia and across Asia, every major area code, live mobile prefixes, current time and weather — and the path to your own Japan virtual number with MCM.
- 17,500+ 企業
- 99.99% 正常運作時間 SLA
- 190+ 個國家
- G2 4.8/5
Japan at a glance
撥號前您需要的號碼和事實。
What is the country code for Japan?
+81 is Japan's call sign to the world. Add it after your own exit code and any Japanese number is within reach. The one rule that trips up newcomers: the leading 0 that every domestic number wears at home gets retired the moment you cross the border. Tokyo's 03-1234-5678 becomes +81 3 1234 5678 abroad — the 0 was always a domestic courtesy, not part of the real address.
程式碼 +81 被分配給 Japan 由 ITU 根據 E.164 計劃制定。這 “+” 意思是「撥打您當地的國際退出代碼」；在行動裝置上，按住 0 來輸入它。
這四個意思都是一樣的——它們將您的電話連接到 Japan.
How to call Japan from anywhere
Think of it as four neat segments, assembled in order: your exit code, then 81, then the area or mobile code with its leading 0 removed, then the local digits. Get the sequence right and it connects on the first try — exactly the kind of reliability Japan expects.
完整範例： +81 03 XXXXXX — 從國外撥打電話時去掉本地前導 0。
Japan phone number format explained
At home, every Japanese number opens with a 0 — the trunk prefix — which falls away for international dialing. Count the digits and you'll find a tidy logic: landlines run 10 digits with the 0, mobiles run 11. There's a quiet hierarchy here too — the bigger the city, the shorter its area code.
固定電話
Area code (1–4 digits, starts with 0) + subscriber number. The major hubs claim the shortest codes: Tokyo 03, Osaka 06. Format example: 03-1234-5678 → +81 3 1234 5678.
移動的
Mobiles open with 070, 080 or 090, then 8 digits. Format example: 090-1234-5678 → +81 90 1234 5678. IP phones sit on 050; toll-free lines on 0120 / 0800.
Japan area codes — major cities
從國外撥打電話時，請去掉本地前導 0。
| 城市 | 地區 | 區號 |
|---|---|---|
| Tokyo | Kantō | 03 |
| Osaka | Kansai | 06 |
| Nagoya | Chūbu | 052 |
| Yokohama | Kantō | 045 |
| Kyoto | Kansai | 075 |
| Kobe | Kansai | 078 |
| Sapporo | Hokkaidō | 011 |
| Sendai | Tōhoku | 022 |
| Hiroshima | Chūgoku | 082 |
| Fukuoka | Kyūshū | 092 |
| Kawasaki | Kantō | 044 |
| Kitakyushu | Kyūshū | 093 |
Japan mobile network prefixes
The prefix after +81 tells you which network issued the SIM — though number portability means it no longer guarantees the operator.
NTT Docomo
au (KDDI)
SoftBank
Rakuten Mobile
Japan time zone
One nation, one clock. From Okinawa to Hokkaido, Japan runs entirely on Japan Standard Time (JST), UTC+9, and has never adopted daylight saving — so the offset you memorize in January still holds in July. No spring-forward arithmetic, no autumn surprises.
Punctuality is currency in Japanese business, so land your call inside working hours. US callers catch Japan's evening with an early-morning dial; UK and European callers reach the Japanese late afternoon between 08:00 and 10:00 their time. Offices keep 09:00–18:00 JST.
開啟互動式最佳通話時間規劃器Emergency numbers in Japan
Free to call from any Japan phone, landline or mobile.
Common mistakes when calling Japan
幾乎每次失敗的國際電話都是格式問題，而不是網路問題。
Trusting the prefix to name the carrier: Japan was an early mover on number portability, so 090, 080 and 070 reveal nothing about whether a line lives on Docomo, au or SoftBank
old assumptions simply break.
Keeping the leading 0: Internationally, the trunk-prefix 0 has to go (03 → +81 3)
Keeping the leading 0: Internationally, the trunk-prefix 0 has to go (03 → +81 3).
Swapping Tokyo and Osaka codes: Tokyo is 03, Osaka is 06
one transposed digit sends you to the wrong metropolis.
Mis-splitting the number: Groupings shift by line type (03-1234-5678 vs 090-1234-5678); the spacing is decorative, the digit count is law
Mis-splitting the number: Groupings shift by line type (03-1234-5678 vs 090-1234-5678); the spacing is decorative, the digit count is law.
Adjusting for a summer clock that doesn't exist: Japan never observes DST, so leave the offset at UTC+9 all year
Adjusting for a summer clock that doesn't exist: Japan never observes DST, so leave the offset at UTC+9 all year.
Tips to reduce the cost of calling Japan
Route over VoIP or a virtual number and sidestep premium per-minute international tariffs entirely.
Favor landlines when you can
termination to a Japanese mobile often carries a steeper rate.
Respect the 09:00–18:00 JST window so calls connect first time, sparing both sides the missed-call shuffle.
Hold a Japanese DID so your contacts dial you at a familiar local rate.
Why businesses get a Japan virtual number
Trust in Japan is earned in small, deliberate signals — and a domestic +81 line is one of the clearest. Customers and partners here reward the familiar over the foreign, and an unknown overseas number rarely makes it past the first ring.
Higher answer rates
A Tokyo or Osaka caller ID gets picked up where a strange foreign number is left to voicemail.
Lower trust friction
A Japanese number reads as a settled, reachable local presence.
Cheaper inbound
Your customers reach you at ordinary domestic rates.
Centralized routing
Send every Japan call to whichever team should take it, wherever they sit.
Faster expansion
Open the market without a physical office or a local carrier contract.
Real PSTN presence
A true geographic number on the network, not a forwarding relay.
Japan My Country Mobile 的虛擬號碼
Japanese customers expect the call to simply work — every time, with no static and no excuses. My Country Mobile delivers carrier-grade Japan numbers built to that standard of reliability and global reach.
主要區號中的本機 DID — 在幾分鐘內完成配置
通話轉接至全球任何行動電話、固定電話、SIP 端點或軟體電話
採用 G.711、G.729、Opus 和 AMR-WB 的高清語音 — 每次通話自動協商
透過分散式 PoP 在主要語音走廊上實現低於 150 毫秒的延遲
99.99% 的正常運作時間 SLA 由異地冗餘基礎設施和低於 2 秒的故障轉移支援
WebRTC 支援基於瀏覽器的呼叫，無需安裝軟體電話
用於設定、路由和呼叫詳細記錄 (CDR) 的 REST API
透過 AI 異常檢測和 STIR/SHAKEN 內建詐欺保護
24/7 網路監控和專門支持
How to get your Japan virtual number
大多數企業在幾小時內即可上線，而不是幾天。
Choose your line — claim a Tokyo, Osaka or other local Japanese DID.
Clear verification — a quick KYC and compliance pass.
Point your routing — direct calls to SIP, mobile, app or call center.
Go live — be taking Japan calls within minutes.
其他國家/地區撥號指南
更多值得加書籤的國家代碼。
Get a Japan virtual number with MCM
Claim a local Japan number, route every call wherever your team works, and meet Japanese customers with the trusted +81 presence they look for.
Japan +81 — FAQ
Why does Tokyo get a one-digit area code while smaller towns get four?expand_more
Japan assigned the shortest codes to its busiest hubs — Tokyo is 03, Osaka 06 — so size and seniority are baked right into the numbering.
Why can't I tell Docomo from SoftBank by the number anymore?expand_more
Japan adopted mobile number portability years ago, so 070, 080 and 090 now float freely between Docomo, au, SoftBank and Rakuten — the prefix has stopped being a clue.
What exactly is the 0 I keep being told to drop?expand_more
It's the domestic trunk prefix. Inside Japan you dial it; from abroad +81 takes its place, so 03 becomes +81 3.
How do I call Japan from the US?expand_more
Dial 011 + 81 + the number minus its leading 0 — for example 011 81 3 1234 5678.
How do I call Japan from the UK?expand_more
Dial 00 + 81 + the number with the leading 0 removed.
Do Japanese mobiles and landlines have different lengths?expand_more
Yes — counting the leading 0, landlines run 10 digits and mobiles run 11. Mobiles open with 070, 080 or 090.
Does Japan ever change its clocks for summer?expand_more
No. Japan has never run daylight saving, so JST holds at UTC+9 the whole year.
Can my business get a real Japanese number even without an office there?expand_more
Yes — MCM provisions genuine local Tokyo, Osaka and other Japan DIDs you can route to any team, anywhere.