Open Computer Network
 | This section possibly contains original research. (April 2019) |
OCN (オーシーエヌ), or Open Computer Network(オープン・コンピュータ・ネットワーク:Ōpun Konpyūta nettowāku), is the largest Japanese Internet service provider, with over 7 million subscribers.[1] It is owned by NTT Communications Corp, one of the largest telecommunication companies in the world. It offers dial-up and ISDN, DSL up to 50 Mb/s and fiber up to 200 Mbit/s download and 100 Mb/s upload.[2]
As a result of regulations intended to promote competition, OCN themselves offer only internet service (routing); the physical line can be offered by NTT (the parent corporation), or by another company. Speeds up to 1 Gb/s are offered in Western Japan, while in East Japan only 200 Mb/s is officially offered for residential use, even though the underlying fiber infrastructure is capable of 1 Gb/s.
OCN also offers an MVNO mobile broadband service called "OCN Mobile One", based on NTT Docomo's LTE infrastructure. Initially it started out as a data-only service, but more recently OCN Mobile One also offers an onseikake SIM card (音声対応SIMカード) that provides full service (data, SMS and voice) without requiring any calling app.[3]
See also
References
- ^ OCN発表記事会員700万契約突破 (machine translation)
- ^ "フレッツ光 料金シミュレーション ｜ フレッツ光（OCN 光 with フレッツ）". Archived from the original on 2014-06-05. Retrieved 2014-06-02.
- ^ "格安SIMカード＜料金・コース＞ | OCN モバイル ONE | OCN". OCN インターネット接続（プロバイダー） (in Japanese). Retrieved 2023-02-10.
External links
- Official OCN website
- Start of OCN Business Web Service and its Future Archived 2011-07-17 at the Wayback Machine at Science Links Japan
- NTT communications
- OCN known as ocn.ad.jp is also the source of a large number of phishing spam emails and Malware distribution activity
- Discussion regarding ocn.ne.jp as a source of spam/malware
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