AS7671 NTT SmartConnect Corporation

MCNET - NTT SmartConnect Corporation · registered in Japan

IPv4 addresses453,88845 prefixes · 0.014% of announced IPv4

Rank in Japan#26largest network in JP by IPv4 space, of 724 · 0.28% of JP

Rank worldwide#622of 79,396 networks with IPv4

IPv65 x /32 (327,680 x /48)2 prefixes

CountryJapan745 ASNs registered there

Open AS7671 in ASN lookup Look up an IP in this network (58.147.192.1) All networks in Japan

IPv4 prefixes

All 45 prefixes, in address order.

58.147.192.0/18
103.28.236.0/22
114.129.0.0/21
114.129.48.0/20
117.58.224.0/20
122.50.16.0/20
122.100.16.0/21
124.241.192.0/18
124.245.0.0/16
125.252.128.0/18
157.3.0.0/16
157.4.0.0/16
192.218.14.0/24
202.62.176.0/20
202.71.64.0/19
202.78.208.0/23
202.78.210.0/23
202.78.212.0/23
202.78.214.0/23
202.78.216.0/22
202.78.220.0/22
202.189.176.0/21
202.211.112.0/20
202.242.245.0/24
202.255.103.0/24
203.78.224.0/19
203.184.96.0/19
203.211.160.0/19
203.211.192.0/18
210.89.192.0/18
210.172.32.0/19
210.233.240.0/20
210.247.0.0/23
210.247.4.0/22
210.247.8.0/21
210.247.16.0/20
210.247.32.0/19
210.247.64.0/18
211.1.224.0/19
219.96.64.0/19
219.103.32.0/20
219.111.224.0/20
219.113.64.0/20
219.124.32.0/20
222.231.128.0/17

IPv6 prefixes

All 2 prefixes.

2001:350::/32
2001:d70::/30

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS7679#23 QTNET - QTnet,Inc.760,832

AS4721#24 JCN - JCOM Co., Ltd.631,808

AS7522#25 STCN - STNet, Incorporated594,944

AS18081#27 KCN - Kintetsu Cable Network Co., Ltd.442,368

AS138384#28 RMNI-AS-AP - Rakuten Mobile Network, Inc.420,864

AS9365#29 iTSCOM - its communications Inc.404,480

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