AS7257 MARU-NET OTO GK

MARU-NET OTO GK · registered in Japan

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in Japan#579largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#46,366of 79,396 networks with IPv4

IPv67 x /32 (523,200 x /48)35 prefixes

CountryJapan745 ASNs registered there

Open AS7257 in ASN lookup Look up an IP in this network (168.151.54.1) All networks in Japan

IPv4 prefixes

All 2 prefixes, in address order.

168.151.54.0/24
208.88.66.0/24

IPv6 prefixes

All 35 prefixes.

2a06:40::/32
2a06:41:30::/44
2a06:41:40::/43
2a06:41:60::/44
2a06:41:80::/41
2a06:41:100::/40
2a06:41:200::/39
2a06:41:400::/38
2a06:41:800::/37
2a06:41:1000::/36
2a06:41:2100::/40
2a06:41:2200::/39
2a06:41:2400::/38
2a06:41:2800::/37
2a06:41:3000::/36
2a06:41:4100::/40
2a06:41:4200::/39
2a06:41:4400::/38
2a06:41:4800::/37
2a06:41:5000::/36
2a06:41:6000::/35
2a06:41:8100::/40
2a06:41:8200::/39
2a06:41:8400::/38
2a06:41:8800::/37
2a06:41:9000::/36
2a06:41:a000::/35
2a06:41:c100::/40
2a06:41:c200::/39
2a06:41:c400::/38
2a06:41:c800::/37
2a06:41:d000::/36
2a06:41:e000::/35
2a06:42::/31
2a06:44::/30

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources