Japan country code, +81 explained.
Everything you need to call Japan with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Japan
Tokyo · Asia
· COUNTRY INFO · VERIFIED
ISO Alpha-2
JP
Capital
Tokyo
Region
Asia
Timezone
UTC+9
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +81 · XX · XXXXXXXX
How Japan numbers break down
A complete number to Japan follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into Japan.
AREA / MOBILE
Regional or mobile prefix — drop the leading 0.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +81 · XX · XXXXXXXX
Japan on the map
Tokyo · Asia
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
Get a business phone number in Japan
A Twiching virtual number in Japan carries local +81 caller ID over a Tier-1 SIP trunk, so outbound calls land as a recognisable domestic number instead of an unfamiliar international one. Provisioning takes minutes, not a carrier contract.
Local +81 caller ID
Calls display a recognisable Japan number instead of an unfamiliar international one.
SIP trunking
Route your existing PBX or softphone through Twiching's Tier-1 trunk — no hardware swap.
Minutes to provision
Numbers activate in the dashboard the same day, with no on-the-ground carrier contract.
+81
Japan · ready to provision today
Why businesses route Japan calls through Twiching
The same Tier-1 interconnects, STIR/SHAKEN attestation, and delivery-rate guarantees that cover major markets apply to Japan calls too, with no reduced service tier.
Japan
+81
191
Countries in directory
JAPAN INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
How Japan phone numbers are structured
Numbering Format
COUNTRY
+81
AREA
XX
LOCAL
XXXXXXXX
Dialing into Japan means working with an open numbering plan under country code +81: a 2-digit prefix plus a 8-digit subscriber number, 10 digits total. Locally, numbers usually carry a leading "0" that gets dropped when calling Japan from outside the country.
Carriers & language
Mobile coverage in Japan comes from 3 major networks — NTT, SoftBank, KDDI — with internet penetration at 93%. VoIP is permitted and regulated by MIC Japan. Language (Japanese) and currency (JPY) both matter here for IVR, SMS, and scheduling support around local business hours.
Asia context
Asian markets range from fully liberalised to licensed-only VoIP, so compliant routing and correct local caller ID have an outsized effect on answer rates.
Skipping the exit code
From the US you must dial 011 before the +81 country code to reach Japan.
Keeping the national trunk "0"
That leading 0 on a Japan number is for domestic calls only; leave it out when dialing in after +81.
Ignoring the time difference
Before dialing Japan, check the local clock — it runs on UTC+9, and off-hours calls tend to go unanswered.
Compliance, carriers & rates for Japan
Permitted — MIC regulated
Regulated by MIC Japan
Japan's regulatory posture under MIC Japan is permissive toward VoIP, meaning a business can start calling and texting into the country without a separate compliance process.
- Act on Protection of Personal Info
- MIC VoIP guidelines
- 050 prefix for VoIP
Direct Tier-1 interconnect with NTT — no wholesale transit in between.
US → Japan
$0.010/min
Japan → US
$0.010/min
Billed per second, not rounded to the minute
How businesses use a Japan number
Local JP caller ID
Present a Japan +81 number so prospects in Tokyo and nationwide recognise the call and are more likely to answer.
Consistent delivery into Asia
Japan sits on the same Tier-1 routing Twiching uses across Asia, so call quality doesn't drop when a campaign expands beyond one country.
No missed calls after hours
Scheduling support and sales coverage around UTC+9 keeps a Japan number answered during the local business day, not the middle of the night elsewhere.
Test the market before committing
A Japan SIP trunk lets a team pilot the market on a real local number, then scale to full local hiring later without changing the number customers already know.
FAQ
Calling Japan — frequently asked questions
Yes, where locally supported — a single Twiching Japan number can handle both voice calls and SMS. That avoids the overhead of provisioning and managing two separate numbers for one customer-facing line.
No — Japan isn't part of the NANP. It has its own country code, +81, under the international E.164 numbering system, which is why calls from the US need the 011 exit code first.
Yes. VoIP is permitted in Japan, regulated by MIC Japan, so businesses can run cloud numbers and SIP termination on compliant routes. There's no special licensing hurdle for a Twiching customer to clear before calling or texting into Japan.
Japan has 93% internet penetration, which is a useful signal for how reliably VoIP and SMS-based channels will perform there. Higher penetration generally means more consistent call quality and app-based delivery for messaging.
Over Tier-1 direct interconnects with major local networks like NTT, rather than lower-quality wholesale transit routes. That direct-carrier approach is what keeps delivery rates and call clarity high.
3 major networks serve Japan: NTT, SoftBank, KDDI. Twiching interconnects directly with these carriers over Tier-1 routes rather than relying on third-party transit.
Full country code directory
The rest of Asia is one click away — each country page below follows the same format as Japan: dial code, numbering plan, carriers, and current rates. All 190 other countries are listed below, Asia first.
Get started
Get a Japan number.
See what a real phone stack does.
Phone numbers, voice, SMS and AI on one account. Direct Tier-1 routing into Japan from day one.
Compliance with applicable regulations required.