AS4723 — DOLPHIN Dolphin

AS4723 announces 22 IPv4 prefixes covering 23,808 addresses and 0 IPv6 prefixes.

About this network

DOLPHIN is Dolphin International Inc., an independent Japanese internet service provider based in Hachioji, Tokyo, trading as DOLPHIN internet (din.or.jp / din.ad.jp).

What it's used for

• Dial-up-era-turned-broadband subscriber access, plus hosting and domain services for its members.

Notable

• Dolphin is one of the many small, long-lived regional ISPs that make up the long tail of the Japanese internet: a modest address footprint, a couple of upstream transit providers, and a subscriber base rather than a datacentre.
• Member web pages and mail accounts are hosted on the same space, so the network mixes a little content hosting into what is otherwise access address space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 61.122.64.0/21
• 61.122.72.0/23
• 61.122.75.0/24
• 61.122.76.0/24
• 61.122.78.0/23
• 61.122.80.0/20
• 175.100.208.0/22
• 210.135.64.0/20
• 210.135.80.0/22
• 210.135.84.0/24
• 210.135.86.0/23
• 210.135.88.0/21
• 210.173.224.0/23
• 210.173.227.0/24
• 210.173.228.0/22
• 210.173.232.0/21
• 210.173.240.0/24
• 210.173.242.0/24
• 210.173.244.0/22
• 210.173.248.0/23
• 210.173.250.0/24
• 210.173.252.0/22

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS4713 NTT DOCOMO BUSINESS,Inc.

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS4713 NTT DOCOMO BUSINESS,Inc.

Internet exchanges

• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan