Upon to the termination of AP1 service, it is possible to change from AP1 to AP3 (AP change) for a limited time from April 2021 to March 2022.
If you would like to migrate, you will need to submit a special application form by E-mail by March 31, 2021.
For details, please refer to "[arrownet]Guideline for Line Migration upon Termination of AP1".

The guidelines are posted on Target (JPX site).

[How to search]
1. Go to Target JPX Site.
URL: https://www.arrowgate.jp/fw/dfw/tsebpp/webxportal/tsehome
* The URL starts with "http:" if accessing Target via arrownet.
* Target JPX Site is available only in Japanese.

2. Click "書類を検索する" tab at the top bar.

3. Select "通知書類".

4. Please set searching conditions as below and click "検索する".
公開日指定: Any date you can write
キーワード: Please write "access point" after putting a tick "件名検索".

- [arrownet]Publication of Guideline Regarding User Connection Line Migration upon Termination of Access Point 1

You cannot change from AP2 to AP3.
It is possible to change from AP1 or AP2 to AP4.
Please refer to the following FAQ for whether or not a redundant configuration in each AP.

"Is it possible to have a Redundant Configuration with 3 locations which is AP2-AP3-AP4 (3 lines)? I'd like to know it for each service provider (JPX, JASDEC, TFX, TOCOM)."
URL: https://faqsd.jpx.co.jp/faq/show/768?site_domain=en_application