NTT West Speed Test - Japan

NTT West is the largest fixed broadband provider in western Japan, operating the FLET'S Hikari fiber network across 30 prefectures. NTT West serves approximately 10.5 million fiber subscribers and covers all of Japan west of Toyama and Shizuoka, including Osaka, Nagoya, Fukuoka, and Hiroshima.

About NTT West

NTT West (Nippon Telegraph and Telephone West Corporation) was established in 1999 as part of NTT's regional restructuring. NTT West inherited the western half of Japan's fixed-line telephone and broadband infrastructure. The company is headquartered in Osaka, reflecting its role as the telecom provider for western Japan.

NTT West operates the FLET'S Hikari network in 30 prefectures from Toyama and Shizuoka westward to Okinawa. Together with NTT East, the two companies control approximately 58% of Japan's FTTH subscriptions. NTT West uses the same wholesale model as NTT East, where customers choose a separate ISP for internet access.

NTT West's FLET'S Hikari network passes over 25 million homes across western Japan. The company also supports docomo Hikari and SoftBank Hikari reseller services, which bundle the NTT line with ISP service for simplified billing.

NTT West Plans and Services

NTT West offers several internet plans across different technologies and price points.

NTT West's main fiber product is FLET'S Hikari Next Super Hayabusa, offering 1 Gbps speeds at JPY 5,940 per month for houses and JPY 3,575 for apartments. The apartment plan is among the cheapest gigabit fiber options in Japan. An additional ISP fee of JPY 550-1,100 per month applies.

FLET'S Hikari Cross provides 10 Gbps service at JPY 6,600 per month in Osaka, parts of Aichi, and expanding to other western cities. FLET'S Hikari Light offers a usage-based plan from JPY 2,860 per month for light users.

NTT West also provides Hikari Denwa (IP phone) at JPY 550 per month, FLET'S TV for television services, and Wi-Fi router rentals. The Hikari Hajime Wari Next discount program offers reduced pricing for the first 24 months.

NTT West Internet Plans

Plan	Speed	Price	Features
FLET'S Hikari Next Super Hayabusa (House) fiber	1 Gbps	JPY 5,940/month	1 Gbps download and upload for detached houses Dedicated fiber line Requires separate ISP contract Hikari Hajime Wari Next discount available
FLET'S Hikari Next Super Hayabusa (Apartment) fiber	1 Gbps	JPY 3,575/month	1 Gbps shared among apartment units Lowest cost fiber option in Japan ISP fee of JPY 550-1,100 additional per month 2-year contract with cancellation fee up to JPY 4,400
FLET'S Hikari Cross (House) fiber	10 Gbps	JPY 6,600/month	10 Gbps download and upload Available in Osaka, Aichi, and select cities in western Japan Requires 10G-compatible router Dedicated fiber line for detached houses
FLET'S Hikari Light (House) fiber	100 Mbps	JPY 2,860/month	Usage-based pricing from JPY 2,860 to JPY 5,960 Up to 100 Mbps speeds For light internet users No minimum data commitment

Prices and availability may vary by location. Contact NTT West for current offers.

NTT West Coverage by Region

NTT West performance varies by location. Coverage density, local infrastructure, and network congestion affect speeds in each market.

Osaka Metropolitan Area (Kansai)

Coverage: Full FTTH coverage. 10 Gbps Cross available in Osaka, Kyoto, Kobe, and surrounding cities Typical: 500-950 Mbps on 1 Gbps with IPv6. 2-7 Gbps on 10 Gbps plans Peak congestion: Moderate on IPv4 PPPoE. Low on IPv6 IPoE

Primary coverage area for NTT West with best infrastructure

Nagoya and Chubu Region

Coverage: Full FTTH coverage in Nagoya and surrounding cities. 10 Gbps expanding Typical: 400-900 Mbps on 1 Gbps plans with IPv6 Peak congestion: Moderate during evening peak hours

Competes with Commufa regional fiber in this area

Fukuoka and Kyushu

Coverage: FTTH available in major cities. Some rural areas use VDSL Typical: 300-800 Mbps on 1 Gbps plans in cities Peak congestion: Low to moderate

10 Gbps available in Fukuoka city and expanding

Okinawa

Coverage: FTTH in Naha and major cities. Limited in remote islands Typical: 300-700 Mbps on 1 Gbps plans Peak congestion: Low

Some islands rely on submarine cable connections with higher latency

Is NTT West Right for You?

Every provider has trade-offs. Here is how NTT West performs based on real-world usage and customer feedback.

Strengths

Widest fiber coverage in western Japan across all 30 prefectures
Apartment plan at JPY 3,575 is one of Japan's cheapest gigabit connections
10 Gbps service available in Osaka and expanding to other western cities
Choice of ISP allows customers to find the best price and service
Stable, proven fiber infrastructure with 25+ years of operation
Compatible with docomo Hikari and SoftBank Hikari bundle discounts

Weaknesses

Separate ISP fee adds JPY 550-1,100 on top of NTT line charge
IPv4 PPPoE congestion during evening peak hours. Must switch to IPv6 IPoE
Apartment connections share bandwidth among all units in the building
No 25 Gbps plan announced yet (NTT East will launch 25 Gbps first)
Only covers western Japan. NTT East handles eastern prefectures
Installation wait time of 2-4 weeks in most areas

Best For

Residents of western Japan who want the most reliable fiber coverage
Budget users in apartments who want gigabit fiber at JPY 3,575 per month
Users who want freedom to choose and switch ISPs without changing fiber line
DoCoMo or SoftBank mobile users who want Hikari bundle discounts
Light users who benefit from usage-based FLET'S Hikari Light pricing

Not Ideal For

Users who want a simple all-in-one package without separate ISP selection
Residents of eastern Japan (NTT East territory)
Users wanting the fastest speeds (NTT East has 25 Gbps, NURO has 20 Gbps)
Those seeking an independent non-NTT network (consider au Hikari or NURO Hikari)

How NTT West Compares

Side-by-side comparison of NTT West against major competitors in Japan.

Competitor	Speed	Price	Coverage	Verdict
Ntt East	Both offer 1 Gbps and 10 Gbps. NTT East will offer 25 Gbps from March 2026. NTT West has not announced 25 Gbps yet.	NTT West apartment at JPY 3,575. NTT East apartment at JPY 3,685. NTT West is JPY 110 cheaper for apartments.	NTT West covers western Japan (30 prefectures). NTT East covers eastern Japan (17 prefectures). No overlap.	Your location determines the provider. If you are in western Japan, NTT West is your NTT option.
Nuro Hikari	NURO offers 2 Gbps standard and up to 20 Gbps plans. NTT West offers 1-10 Gbps. NURO has faster standard speeds.	NURO at JPY 5,200 all-inclusive. NTT West at JPY 5,940 plus ISP fee. NURO is cheaper overall.	NTT West covers all 30 western prefectures. NURO is available only in select cities and buildings.	Choose NURO for faster speeds and lower total cost where available. Choose NTT West for wider coverage and ISP choice.

Troubleshooting NTT West Issues

Common NTT West connection problems and how to fix them.

FLET'S Hikari speeds drop significantly between 7pm and 11pm

Cause: IPv4 PPPoE congestion at NTT network exchange points during peak usage hours.

Enable IPv6 IPoE through your ISP (v6 Plus, transix, or similar)
IPv6 IPoE bypasses the congested PPPoE exchange and maintains fast speeds at all times
Test with a wired Ethernet cable to confirm it is not a Wi-Fi issue
If your ISP does not offer IPv6 IPoE, switch to one that does

Apartment FLET'S Hikari speeds are much lower than 1 Gbps

Cause: Multiple apartment units share the same fiber line. VDSL type connections limit speeds to 100 Mbps.

Check if your building uses fiber-to-the-unit or VDSL (check the wall jack type)
VDSL buildings max out at 100 Mbps. Ask NTT West about upgrading to direct fiber
For fiber-to-the-unit buildings, enable IPv6 IPoE for best peak-hour performance
Test during off-peak hours (late night) to see the maximum available speed

NTT West History

Key milestones in NTT West development and network expansion.

1999

Created from NTT's regional split as NTT West Corporation, headquartered in Osaka

2001

Launched FLET'S Hikari fiber-to-the-home service in western Japan

2004

Expanded fiber coverage to all major cities in the 30 western prefectures

2012

Launched FLET'S Hikari Next Super Hayabusa with 1 Gbps speeds

2020

Launched FLET'S Hikari Cross 10 Gbps service in Osaka metropolitan area

2024

Expanded 10 Gbps Cross service to additional western Japan cities

Test Your NTT West Speed

Run a free speed test to check if NTT West delivers the speeds you are paying for. Test during peak evening hours for the most realistic results. Compare your results against NTT West advertised speeds above.

NTT West Speed Test FAQ

What is the difference between NTT East and NTT West?

NTT East and NTT West are sister companies that cover different geographic halves of Japan. NTT East covers 17 prefectures in eastern Japan including Tokyo, Kanagawa, and Hokkaido. NTT West covers 30 prefectures in western Japan including Osaka, Nagoya, Fukuoka, and Okinawa. The dividing line runs roughly through Niigata and Shizuoka prefectures. Both offer the same FLET'S Hikari technology and similar pricing. You cannot choose between them since your address determines which company serves you.

How much does NTT West fiber internet cost per month?

NTT West FLET'S Hikari Next 1 Gbps costs JPY 5,940 per month for detached houses and JPY 3,575 for apartments. You also need a separate ISP contract costing JPY 550-1,100 per month, bringing total costs to JPY 4,125-7,040 per month. The 10 Gbps FLET'S Hikari Cross plan costs JPY 6,600 per month plus ISP fee. For light users, FLET'S Hikari Light starts at JPY 2,860 per month with usage-based pricing. Bundled services like docomo Hikari and SoftBank Hikari include the ISP fee in one price.

Can I switch my ISP without changing my NTT West fiber line?

Yes. One advantage of the NTT West wholesale model is that you can switch ISPs while keeping the same FLET'S Hikari fiber line. This means no new installation visit and no downtime for the fiber connection. You cancel your current ISP and sign up with a new one on the same NTT line. Popular ISPs on NTT West include OCN, So-net, BIGLOBE, @nifty, and ASAHI Net. Switching ISPs is useful if you want better IPv6 IPoE support or lower monthly pricing.