About IPv6 Connection Feature｜Internet Service Provider in Japan - English Signup and English Customer Service

Asahi Net provides IPv6 Connection Feature to all fiber-optic connection services as a standard feature.
This feature will bring you an enhanced network quality and usability.
Asahi Net invites you to experience the high capacity IPv6 network that we offer.

What is IPv6?

Allows speedy and high-capacity communication by using IPv4 (PPPoE) for IPv4 websites, and wide broadband IPv6 (IPoE) for IPv6 websites.

• Asahi Net offers high capacity IPv6 network to bring an improved internet experience for our customers. Please note that the internet communication speed is not guaranteed as it depends on multiple factors such as the destination address, the condition and the hours of the day in which the internet connection is made.
• Depending on the operating environment, settings related to IPv6 may be required.
• IPv6 connection is available when the accessed sites support IPv6. Connection will be with IPv4 when IPv6 is not supported at the accessed sites.

• Asahi Net FTTH with FLET’S
• Asahi Net docomo Hikari
• FLET'S Hikari Next
• FLET'S Hikari Light

• Check your NTT customer ID

  Check your NTT customer ID

  Please have your NTT customer ID ready for registration. (Shown as お客さまID in Japanese.) NTT customer ID is written on a document sent from NTT East/NTT West by post when you signed up for a fiber-optic line with NTT.

  This step is not required for users of Asahi Net FTTH with FLET’S and Asahi Net docomo Hikari.

  NTT East users

  

  Above is an example of 開通のご案内 (Notice of line connection completed) sent by post from NTT East, in which you can find your NTT customer ID shown as お客さまID.
  Reference: NTT East (Japanese)

  NTT West users

  

  Above is an example of お申し込み内容のご案内 (Account description) sent by post from NTT West, in which you can find your NTT customer ID shown as お客さまID.
  Reference: NTT West (Japanese)

  If you forgot your NTT customer IDarrow

  NTT East Users

  Please contact NTT East to re-issue your NTT customer ID.

  NTT East Contact (English)
  Phone: 0120-565-950 (from mobile phones and landlines)
  Hours: Monday-Friday, 9:00 a.m.-5:00 p.m.
  

  • Closed on national holidays and New Year's holidays
  • Please note that NTT Technical support is not available in English.

  Reference:

  NTT East

  What is NTT East?

  NTT West Users

  Please contact NTT West to re-issue your NTT customer ID.

  NTT West Information (English)
  Phone: 0120-064-337 (from mobile phones and landlines)
  Hours: Monday-Friday, 9:00 a.m.-5:00 p.m.
  

  • Closed on national holidays and New Year's holidays

  Reference:

  NTT West

  What is NTT West?

• Steps to start using IPv6

  Steps to start using IPv6

  Please read before registration.

  1.Proxy application for FLET’S v6 Option

  In order to use the IPv6 Connection Feature, you need to apply for FLET’S v6 Option service provided from NTT East/NTT West (free of charge.) Here, we ask for your authorization for Asahi Net to make a proxy application of FLET’S v6 Option service provided by either by NTT East or NTT West.

  2.Please check the email sent from Asahi Net

  After you register for IPv6 Connection Feature, Asahi Net will send you an email to your Asahi Net Email address (@asahinet.jp or @asahi-net.or.jp) notifying you that registration has been accepted. If you have entered other email address for this registration process, an email will be sent to that address as well.

  Once IPv6 Connection Feature is ready to be used, you will be notified by email.

  3.A document sent to Asahi Net customers from NTT after the registration

  When registration for FLET'S v6 Option service is completed either with NTT East or NTT West, they will send you a document by post. Once you have received the document, please check it and then keep it in a safe place for future reference.

  A document sent to Asahi Net customers from NTT

  4.A possible effect after starting to use IPv6 Connection Feature

  Although such case can be rare, you may experience a temporary disconnection when you start using the IPv6 Connection Feature. If this happens, please reboot your computer, router and other relevant devices. For details, please refer to the Notes.

  Proceed to registration for IPv6 Connection Feature

  • [Individual Members] Please have your Asahi Net User ID and password ready. Click here, if you have forgotten your ID or password.

• Start to use IPv6 Connection

  Start to use IPv6 Connection

  You can begin to use IPv6 Connection Feature as soon as you receive an email from Asahi Net notifying the start of the service. Changes to the internet connection settings are not required.

  You can check online, whether connection is made via IPv6.

  IPv6 Connection Status

  If you have received a notice for registration uncompletedarrow

  If the procedure to start using the IPv6 Connection Feature is not completed, Asahi Net will individually send you a notification email.

  If you receive this email, please check the details, and take the necessary procedures.

  Done

• What is IPv6?

  IPv6 stands for Internet Protocol version 6. It is the next generation Internet protocol following the IPv4, which is currently the standard protocol. As it has a vast address space, IP addresses can be assigned to substantial number of devices.

• Would IPv6 possibly improve the communication speed?

  Since the speed generally vary by multiple factors such as situations at communicating counterparts, surrounding conditions and traffic status, we cannot answer it only with the use of IPv6. But since the IPv6 network has a relatively wider capacity than IPv4, there is a possibility that the speed may improve in case of slowdowns due to IPv4 traffic congestion.

See more FAQS