In addition to IPv4 (often written as just IP), there is IP version 6 (IPv6). IPv6 was developed as IPng (“IP:The Next Generation” because the developers were supposedly fans of the TV show “Star Trek ...

本記事は、「IPv4／IPv6アドレス変換アプローチを検討する──IPv4からIPv6への移行対策とは」の続編である。 IPv4／IPv6変換の問題に対処するための実際的なメカニズムは、10年間にわたって模索されたが実現されなかった。これを受け、このIPアドレッシング ...

We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...

IPv4とIPv6は、インターネット通信を行うための規格です。 主な違いは以下の点にあります： IPアドレスの数: IPv4は32ビットで約43億個のIPアドレスを持ちますが、IPv6は128ビットで約340澗個（実質無限）のIPアドレスを持ちます。 例えば、IoTデバイスの急増に ...

The format of an IP address in the traditional 32-bit version of the IP protocol. For the foreseeable future, IPv4 will co-exist with the newer IPv6 version (see IPv6). IPv4 uses a "dotted decimal" ...

Asia-Pacific Network Information Centre（APNIC）は4月15日、同日をもってAPNICの管理するIPv4アドレスの在庫が枯渇したことを発表した。あわせて、APNICとアドレス在庫を共有する社団法人日本ネットワークインフォメーションセンター（JPNIC）も、IPv4アドレスの通常 ...

On Feb. 3, 2011, the Internet Corporation for Assigned Names and Numbers (ICANN) announced that the last remaining Internet protocol version 4 (IPv4) IP addresses had been allocated, although it may ...

Many hackers have familiar sayings in their heads, such as “If it ain’t broke, don’t fix it” and KISS (Keep it simple, stupid). Those of us who have been in the field for some time have habits that ...

Internet growth rates appear to have stalled as the current Internet Protocol version 4 (IPv4) addresses become scarce, according to a report by the Asia Pacific Network Information Centre (APNIC).