Japan Country Code (+81): Complete Guide
Complete guide to Japan country code +81. Learn how to dial Japan from abroad, understand Tokyo, Osaka area codes, mobile operators (NTT Docomo, au, SoftBank, Rakuten), and save money on international calls.
Japan Country Code: +81
Drop the leading 0 from area codes when calling internationally
How to Dial Japan
Drop the Zero!
Japanese area codes start with 0 domestically (03 for Tokyo, 090 for mobile). When calling internationally, always remove this leading 0: 03 → +81 3, 090 → +81 90.
Japan Area Codes
Japan uses geographic area codes for landlines. Major cities have shorter codes (2 digits), smaller areas have longer codes (3-4 digits):
| City/Region | Area Code | Notes |
|---|---|---|
| Tokyo (23 wards) | 03 | Capital city center |
| Osaka | 06 | Second largest city |
| Yokohama | 045 | Greater Tokyo area |
| Nagoya | 052 | Central Japan hub |
| Kyoto | 075 | Ancient capital |
| Sapporo | 011 | Hokkaido capital |
| Fukuoka | 092 | Kyushu main city |
| Kobe | 078 | Port city |
Mobile Operators in Japan
Japan has four major mobile carriers. NTT Docomo has the largest market share, followed by au (KDDI) and SoftBank:
Largest carrier, best coverage nationwide, premium service
Second largest, strong rural coverage, competitive plans
Third carrier, owns Yahoo Japan, good urban coverage
Newest carrier, aggressive pricing, growing network
📱 Japanese Mobile Number Format
Mobile numbers start with 090, 080, or 070 (90, 80, 70 internationally)
Cost to Call Japan
| Service | Rate to Japan | Notes |
|---|---|---|
| BubblyPhone | $0.02-0.03/min | Best value, no contracts |
| AT&T / Verizon | $2.00-3.50/min | Standard international rates |
| T-Mobile (Magenta) | $0.25/min or free | Free with some plans |
| Skype | $0.025/min | Landline & mobile |
| LINE / WhatsApp | Free | App-to-app only (LINE is #1 in Japan) |
LINE is King in Japan!
Unlike most countries where WhatsApp dominates, LINE is the #1 messaging app in Japan with 95+ million users. If you're contacting someone in Japan, they almost certainly have LINE. Free voice and video calls over WiFi/data.
Japan Time Zone
Japan uses Japan Standard Time (JST) year-round and does not observe daylight saving time:
💡 Best Time to Call: Due to the large time difference:
• 7-9 PM EST = 9-11 AM next day in Japan (morning there)
• 6-8 AM EST = 8-10 PM same day in Japan (evening there)
Japan doesn't do DST, so the gap changes when the US switches clocks.
Pro Tips for Calling Japan
Drop the Zero
Japanese numbers start with 0 domestically. When calling internationally, remove it: 03 → +81 3, 090 → +81 90.
Mobile Prefixes
Mobile numbers start with 090 (oldest), 080, or 070 (newest). All work the same way for international calls.
Use LINE
LINE is Japan's dominant messaging app (95M+ users). Almost everyone has it. Free calls over WiFi/data.
Business Hours
Japanese businesses typically operate 9 AM - 6 PM JST. Avoid calling during lunch (12-1 PM) for business matters.
Frequently Asked Questions
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