AS18149 — JPRS Japan Registry Service Co., Ltd.

Network type: hosting

AS18149 announces 3 IPv4 prefixes covering 1,024 addresses and 2 IPv6 prefixes.

About this network

JPRS is operated by Japan Registry Services Co., Ltd., the organization responsible for managing the .jp top-level domain.

What it's used for

• The address space carries internal registry infrastructure, evidenced by reverse DNS entries such as vl20.ex-gw2202nc.tyo.jprs.co.jp and 103.47.2.64.tyo.jprs.co.jp.
• With 1024 IPv4 addresses announced across 3 prefixes and only 3 observed neighbours, the network functions as a small, self-contained internal estate rather than a transit or access provider.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC), which is consistent with JPRS's role as the .jp registry operator.
• The inventory consists of three IPv4 prefixes and two IPv6 prefixes, all located in Japan, reflecting a tightly scoped operational footprint.

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

Announced prefixes

• 103.47.2.0/24
• 202.11.16.0/23
• 203.208.23.0/24
• 2001:dda::/48
• 2001:df0:8::/48

Upstream networks

• AS2914 NTT America, Inc.
• AS2516 KDDI CORPORATION

Downstream networks

• AS131905 Japan Registry Services Co., Ltd.

Adjacent networks

• AS2914 NTT America, Inc.
• AS131905 Japan Registry Services Co., Ltd.
• AS2516 KDDI CORPORATION

Internet exchanges

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