AS131916 Tokyo Bay Network Co.,Ltd.

BAYNET - Tokyo Bay Network Co.,Ltd. · registered in Japan

IPv4 addresses31,7449 prefixes · 0.001% of announced IPv4

Rank in Japan#209largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#4,914of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryJapan745 ASNs registered there

Open AS131916 in ASN lookup Look up an IP in this network (103.91.4.1) All networks in Japan

IPv4 prefixes

All 9 prefixes, in address order.

103.91.4.0/22
157.65.216.0/21
163.131.112.0/20
163.131.128.0/18
202.16.104.0/21
202.247.136.0/21
202.247.184.0/21
210.142.128.0/22
219.100.12.0/22

IPv6 prefixes

All 1 prefix.

2400:5b60::/32

Similar-sized networks in Japan

ASNNameIPv4 addresses

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AS9607#208 BBTower - BroadBand Tower, Inc.31,744

AS4675#210 U-NETSURF - UNIADEX, LTD.30,976

AS7668#211 HTCN - Hokuriku Telecommunication Network Co.29,696

AS18134#212 KITANET - JCOM Co., Ltd.29,696

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