Internet Providers in Japan
Asia-Pacific — Ranked #4 globally for broadband speed
Japan has among the world's best broadband infrastructure, with NTT, KDDI (au Hikari), SoftBank (Yahoo! BB), and Nuro competing for subscribers. Japan pioneered optical fibre deployments and today has over 82% FTTH penetration. Japan consistently ranks top 5 globally for both fixed and mobile internet speeds.
Broadband Overview — Japan
| Japan Internet Statistics | |
|---|---|
| Population | 123,294,513 |
| Internet Users | 118,600,000 (96.2% penetration) |
| Broadband Household Coverage | 95% of households |
| FTTH / Fibre Penetration | 82% of fixed broadband |
| Mobile Subscriptions | 155 per 100 people |
| Avg. Monthly Cost (broadband) | ~USD $40 |
| Regulatory Body | Ministry of Internal Affairs and Communications (MIC) |
| Global Speed Rank | #4 (Ookla fixed broadband index) |
Broadband Infrastructure
NTT (Nippon Telegraph and Telephone) owns and operates Japan's primary fibre infrastructure through NTT East and NTT West. KDDI and SoftBank use NTT's wholesale fibre to deliver competing services. Nuro (Sony Network) operates its own independent FTTH network offering speeds up to 10 Gbps.
Key Facts
- ✓ Japan has 82% FTTH penetration — among the highest in the world
- ✓ Nuro offers up to 10 Gbps residential fibre plans
- ✓ NTT East/West operate one of the world's largest FTTH networks
- ✓ Japan's median upload speed (243 Mbps) is among the highest globally
Internet Freedom in Japan
- ● Generally free internet with minimal blocking
- ● Courts can order blocking of piracy sites
- ● Voluntary ISP blocking of manga/anime piracy sites since 2018
- ● No social media censorship
ISP Speed Comparison — Japan
Benchmark speeds based on Speedtest.now methodology. Actual speeds vary by location and plan.
| Provider | Technology | Download | Upload | Ping | Details |
|---|---|---|---|---|---|
| NTT Flets Hikari | FTTH (GPON/XGS-PON), 10G Fiber | 620 Mbps | 590 Mbps | 4 ms | View → |
| SoftBank Hikari | FTTH (via NTT line), 5G Fixed Wireless | 570 Mbps | 540 Mbps | 5 ms | View → |
| au Hikari (KDDI) | FTTH (own + NTT line), 5G Fixed Wireless | 600 Mbps | 570 Mbps | 5 ms | View → |
All Providers in Japan
NTT Flets Hikari
AS4713Japan's nationwide FTTH infrastructure backbone
SoftBank Hikari
AS17676Fast fiber bundled with SoftBank mobile
au Hikari (KDDI)
AS2516KDDI fiber for au mobile customers
How to Choose an ISP in Japan
1. Check Coverage
Not all ISPs serve all addresses. Enter your postcode or address on each ISP's website to confirm availability before ordering.
2. Match Speed to Use
Streaming HD requires 10 Mbps per screen. Working from home with video calls needs 25 Mbps minimum. Gaming and 4K streaming benefit from 100+ Mbps.
3. Compare Contracts
Check whether the ISP locks you into a 12 or 24-month contract. Rolling monthly deals offer flexibility but may cost more. Watch for setup fees.
4. Run a Speed Test
After signing up, run a speed test to verify you're getting the speeds you paid for. Test at different times of day.
Frequently Asked Questions — Japan Broadband
What is the fastest residential internet in Japan?
Nuro (operated by Sony Network Communications) offers plans up to 10 Gbps. KDDI's au Hikari and NTT's Flet's Hikari also offer 10 Gbps plans in select areas.
Can foreigners sign up for broadband in Japan?
Yes, though some ISPs require a Japanese bank account and permanent address. English-language support is available from providers like IIJmio and NTT with some documentation.