Japan IP Ranges

Up-to-date IP address ranges for Japan in CIDR format. Download and use them in your network settings, firewalls or routers.

CIDR IPTABLES CISCO ACL

IPv4

Number of blocks: 4,732

Download IPv4

IPTABLES IPCHAINS CISCO ACL

IPv6

Number of blocks: 774

Download IPv6

IP6TABLES

Updated: 20 March 2026

IPv4 Ranges Preview (first 20)

1.0.16.0/20
1.0.64.0/18
1.1.64.0/18
1.5.0.0/16
1.21.0.0/18
1.21.64.0/19
1.21.96.0/20
1.21.112.0/20
1.21.128.0/20
1.21.144.0/20
1.21.160.0/19
1.21.192.0/19
1.33.0.0/16
1.66.0.0/15
1.72.0.0/13
1.112.0.0/14
14.0.8.0/22
14.1.4.0/22
14.1.8.0/21
14.3.0.0/16

Showing 20 of 4,732 ranges

IPv6 Ranges Preview (first 20)

2001:200::/35
2001:200:2000::/35
2001:200:4000::/34
2001:200:8000::/33
2001:218::/35
2001:218:2000::/35
2001:218:4000::/34
2001:218:8000::/33
2001:240::/35
2001:240:2000::/35
2001:240:4000::/34
2001:240:8000::/33
2001:258::/35
2001:258:2000::/35
2001:258:4000::/34
2001:258:8000::/33
2001:260::/35
2001:260:2000::/35
2001:260:4000::/34
2001:260:8000::/33

Showing 20 of 774 ranges

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What are IP ranges for Japan?

IP ranges are sets of IP addresses assigned to specific providers and organizations within Japan. These addresses are used to connect devices to the internet or internal networks.

Application of IP ranges in Japan

IP addresses in Japan are widely used in network device settings such as firewalls, routers and switches. Knowing IP ranges helps filter traffic, block unwanted connections or allow access only to specific IP addresses.

IPv4 and IPv6 in Japan

Up-to-date IPv4 and IPv6 ranges allow you to set up secure and reliable connections in Japan. You can use these ranges to configure IPTABLES, IPCHAINS and CISCO ACL.

Search for open ports and services in Japan

Discover which services and ports are open in :country. Global Threat Intel provides comprehensive data on internet infrastructure.

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Japan

IPv4 blocks 4,732

IPv6 blocks 774

Formats 4