AS18068 — ACROSS Dream Wave Shizuoka Co. Ltd.

AS18068 announces 31 IPv4 prefixes covering 48,640 addresses and 2 IPv6 prefixes.

About this network

ACROSS is the AS handle for Dream Wave Shizuoka Co. Ltd., a regional internet service provider operating in Shizuoka, Japan.

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS entries such as s-port.biz, client.s-cnet.ne.jp, and across.or.jp.
• With 48,640 IPv4 addresses announced across 34 prefixes and only 14 observed neighbours, the high address-to-neighbour ratio indicates an access or eyeball network rather than a transit provider.

Notable

• Registrants for the majority of prefixes are the Japan Network Information Center (JPNIC), consistent with the holder's identity as a Japanese ISP.
• Some prefixes, such as 43.229.244.0/22 and 45.113.4.0/22, are registered to different entities (engine-net,LLC and Bronze Arm LLC), suggesting leased space or historical acquisitions.
• The inventory includes a mix of /20, /21, and /22 blocks, with netnames like REDSPEED and Hypernet-Shizuoka reflecting the operator's service brands.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 27.100.8.0/24
• 27.100.10.0/23
• 27.100.28.0/22
• 43.229.244.0/22
• 45.113.4.0/22
• 49.143.240.0/24
• 49.143.242.0/23
• 49.143.244.0/22
• 59.153.204.0/22
• 103.40.96.0/22
• 103.48.136.0/22
• 103.225.144.0/22
• 103.240.116.0/22
• 103.243.152.0/22
• 119.82.8.0/21
• 133.88.0.0/20
• 133.88.16.0/22
• 137.59.232.0/22
• 157.119.64.0/22
• 180.222.32.0/20
• 180.222.48.0/22
• 180.222.56.0/21
• 202.43.96.0/22
• 202.94.176.0/22
• 202.94.180.0/23
• 202.94.184.0/21
• 202.94.192.0/19
• 218.223.64.0/20
• 218.223.80.0/22
• 218.223.84.0/23
• 218.223.88.0/21
• 2403:9c00::/32
• 2405:25c0:a300::/40

Upstream networks

• AS146986 SUZUYO SHINWART CORPORATION
• AS2519 ARTERIA Networks Corporation
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS3491 PCCW Global (HK) Ltd.
• AS24482 SG.GS
• AS9304 HGC Global Communications Limited
• AS9002 RETN Limited

Downstream networks

• AS55907 GMO Internet, Inc.

Adjacent networks

• AS146986 SUZUYO SHINWART CORPORATION
• AS2519 ARTERIA Networks Corporation
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS3491 PCCW Global (HK) Ltd.
• AS55907 GMO Internet, Inc.
• AS24482 SG.GS
• AS9304 HGC Global Communications Limited
• AS9002 RETN Limited

Internet exchanges

• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• BroadBand Internet eXchange Hong Kong — Hong Kong, China