AS38638 Ip Core Corporation

IP-CORE - Ip Core Corporation · registered in Japan

IPv4 addresses6,65610 prefixes · <0.001% of announced IPv4

Rank in Japan#347largest network in JP by IPv4 space, of 724 · <0.01% of JP

Rank worldwide#11,872of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS38638 in ASN lookup Look up an IP in this network (27.123.8.1) All networks in Japan

IPv4 prefixes

All 10 prefixes, in address order.

27.123.8.0/21
45.207.173.0/24
103.7.236.0/22
111.92.244.0/22
154.83.20.0/23
154.91.168.0/23
154.194.51.0/24
154.215.1.0/24
182.23.208.0/23
182.23.211.0/24

Similar-sized networks in Japan

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AS17693#344 NEKONET - YAMATO SYSTEM DEVELOPMENT CO., LTD.7,168

AS17948#345 EditNet - EditNet, Incorporated7,168

AS17505#346 SBmobile - SoftBank Corp.6,656

AS55376#348 KCV-HitaNet - KCV Communications Co. Ltd.6,656

AS146969#349 SBT-SC - SoftBank Corp.6,400

AS10015#350 CWJ-NET - Cyber Wave Japan Co., Ltd.6,400

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