AS23620 DMM.com LLC

DMM - DMM.com LLC · registered in Japan

IPv4 addresses15,3606 prefixes · <0.001% of announced IPv4

Rank in Japan#277largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#7,288of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryJapan745 ASNs registered there

Open AS23620 in ASN lookup Look up an IP in this network (43.255.40.1) All networks in Japan

IPv4 prefixes

All 6 prefixes, in address order.

43.255.40.0/22
103.254.144.0/22
157.112.80.0/20
202.6.244.0/22
203.209.144.0/20
223.252.112.0/20

IPv6 prefixes

All 1 prefix.

2001:df0:6800::/48

Similar-sized networks in Japan

ASNNameIPv4 addresses

AS55384#274 JAIST-EXP - Japan Advanced Institute of Science and Technology16,384

AS55910#275 SITNET-AS - Shibaura Institute of Technology16,384

AS23635#276 CRCC - CRCCMedia Co.,ltd16,384

AS24279#278 CAT-V - SENDAI CATV CO.,LTD.14,336

AS9604#279 FSI-AS - FUJI SOFT INCORPORATED14,336

AS23808#280 TOSHIMA-NET - TOSHIMA CABLE NETWORK CO.,LTD14,336

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