ASNs in Japan: 718 networks (Autonomous Systems)

AS17676 — GIGAINFRA SoftBank Corp.

GIGAINFRA SoftBank Corp. — about 38.3 million IPv4 addresses.

AS4713 — OCN NTT Communications Corporation

OCN NTT Communications Corporation — about 28.6 million IPv4 addresses.

AS2516 — KDDI KDDI CORPORATION

KDDI KDDI CORPORATION — about 18.1 million IPv4 addresses.

AS2907 — SINET-AS Research Organization of Information and Systems, National Institute of Informatics

SINET-AS Research Organization of Information and Systems, National Institute of Informatics — about 8.8 million IPv4 addresses.

AS17506 — UCOM ARTERIA Networks Corporation

UCOM ARTERIA Networks Corporation — about 5.4 million IPv4 addresses.

AS9824 — JTCL-JP-AS JCOM Co., Ltd.

JTCL-JP-AS JCOM Co., Ltd. — about 4.7 million IPv4 addresses.

AS2497 — IIJ Internet Initiative Japan Inc.

IIJ Internet Initiative Japan Inc. — about 4.1 million IPv4 addresses.

AS2527 — SO-NET Sony Network Communications Inc.

SO-NET Sony Network Communications Inc. — about 3.9 million IPv4 addresses.

AS2518 — BIGLOBE BIGLOBE Inc.

BIGLOBE BIGLOBE Inc. — about 3.7 million IPv4 addresses.

AS17511 — OPTAGE OPTAGE Inc.

OPTAGE OPTAGE Inc. — about 3 million IPv4 addresses.

AS9605 — DOCOMO NTT DOCOMO, INC.

DOCOMO NTT DOCOMO, INC. — about 2.5 million IPv4 addresses.

AS2514 — INFOSPHERE NTT PC Communications, Inc.

INFOSPHERE NTT PC Communications, Inc. — about 2.1 million IPv4 addresses.

AS10013 — FBDC FreeBit Co.,Ltd.

FBDC FreeBit Co.,Ltd. — about 1.9 million IPv4 addresses.

AS4725 — ODN SoftBank Corp.

ODN SoftBank Corp. — about 1.9 million IPv4 addresses.

AS9595 — XEPHION NTT-ME Corporation

XEPHION NTT-ME Corporation — about 1.5 million IPv4 addresses.

AS18126 — CTCX Chubu Telecommunications Company, Inc.

CTCX Chubu Telecommunications Company, Inc. — about 1.5 million IPv4 addresses.

AS10010 — TOKAI TOKAI Communications Corporation

TOKAI TOKAI Communications Corporation — about 1.5 million IPv4 addresses.

AS2510 — INFOWEB FUJITSU LIMITED

INFOWEB FUJITSU LIMITED — about 1.5 million IPv4 addresses.

AS2519 — VECTANT ARTERIA Networks Corporation

VECTANT ARTERIA Networks Corporation — about 1.5 million IPv4 addresses.

AS4685 — ASAHI-NET Asahi Net

ASAHI-NET Asahi Net — about 1.3 million IPv4 addresses.

AS9617 — ZAQ JCOM Co., Ltd.

ZAQ JCOM Co., Ltd. — about 1.2 million IPv4 addresses.

AS4694 — IDCF IDC Frontier Inc.

IDCF IDC Frontier Inc. — about 1 million IPv4 addresses.

AS7679 — QTNET QTnet,Inc.

QTNET QTnet,Inc. — about 760.8 thousand IPv4 addresses.

AS4721 — JCN JCOM Co., Ltd.

JCN JCOM Co., Ltd. — about 631.8 thousand IPv4 addresses.

AS7522 — STCN STNet, Incorporated

STCN STNet, Incorporated — about 594.9 thousand IPv4 addresses.

AS7671 — MCNET NTT SmartConnect Corporation

MCNET NTT SmartConnect Corporation — about 453.9 thousand IPv4 addresses.

AS18081 — KCN Kintetsu Cable Network Co., Ltd.

KCN Kintetsu Cable Network Co., Ltd. — about 442.4 thousand IPv4 addresses.

AS138384 — RMNI-AS-AP Rakuten Mobile Network, Inc.

RMNI-AS-AP Rakuten Mobile Network, Inc. — about 420.9 thousand IPv4 addresses.

AS9365 — ITSCOM its communications Inc.

ITSCOM its communications Inc. — about 404.5 thousand IPv4 addresses.

AS18071 — MEI1 Panasonic Information Systems Co., Ltd

MEI1 Panasonic Information Systems Co., Ltd — about 383.2 thousand IPv4 addresses.

AS7684 — SAKURA-A SAKURA Internet Inc.

SAKURA-A SAKURA Internet Inc. — about 368.6 thousand IPv4 addresses.

AS7524 — HANSHIN ITEC HANKYU HANSHIN CO.,LTD.

HANSHIN ITEC HANKYU HANSHIN CO.,LTD. — about 366.3 thousand IPv4 addresses.

AS9370 — SAKURA-B SAKURA Internet Inc.

SAKURA-B SAKURA Internet Inc. — about 341 thousand IPv4 addresses.

AS131932 — JEIS-NET JR East Information Systems Company

JEIS-NET JR East Information Systems Company — about 327.7 thousand IPv4 addresses.

AS9371 — SAKURA-C SAKURA Internet Inc.

SAKURA-C SAKURA Internet Inc. — about 297.2 thousand IPv4 addresses.

AS18144 — AS-ENECOM Enecom,Inc.

AS-ENECOM Enecom,Inc. — about 291.8 thousand IPv4 addresses.

AS9597 — CPI-NET KDDI Web Communications Inc.

CPI-NET KDDI Web Communications Inc. — about 276.7 thousand IPv4 addresses.

AS7506 — INTERQ GMO Internet Group, Inc.

INTERQ GMO Internet Group, Inc. — about 252.7 thousand IPv4 addresses.

AS9351 — ZLAN ZTV CO.,LTD

ZLAN ZTV CO.,LTD — about 249.9 thousand IPv4 addresses.

AS4673 — INTERVIA NTT DATA CORPORATION

INTERVIA NTT DATA CORPORATION — about 241.7 thousand IPv4 addresses.

AS2522 — PPP-EXP Japan Network Information Center

PPP-EXP Japan Network Information Center — about 229.1 thousand IPv4 addresses.

AS2506 — SUPERCSI NTT WEST CHUGOKU CORPORATION

SUPERCSI NTT WEST CHUGOKU CORPORATION — about 214.3 thousand IPv4 addresses.

AS7687 — D-CRUISENET TOYOTA SYSTEMS CORPORATION

D-CRUISENET TOYOTA SYSTEMS CORPORATION — about 201 thousand IPv4 addresses.

AS2501 — UTNET The University of Tokyo

UTNET The University of Tokyo — about 200.7 thousand IPv4 addresses.

AS4686 — BEKKOAME BEKKOAME INTERNET INC.

BEKKOAME BEKKOAME INTERNET INC. — about 200.4 thousand IPv4 addresses.

AS9354 — TDNC Community Network Center Inc.

TDNC Community Network Center Inc. — about 200.4 thousand IPv4 addresses.

AS23793 — AIST National Institute of Advanced Industrial Science and Technology

AIST National Institute of Advanced Industrial Science and Technology — about 199.9 thousand IPv4 addresses.

AS9619 — SSD Sony Global Solutions Inc.

SSD Sony Global Solutions Inc. — about 199.7 thousand IPv4 addresses.

AS7514 — MEX Computer Engineering & Consulting, Ltd.

MEX Computer Engineering & Consulting, Ltd. — about 192 thousand IPv4 addresses.

AS17698 — CCNET-NET COMMUNITY NETWORK CENTER INCORPORATED.

CCNET-NET COMMUNITY NETWORK CENTER INCORPORATED. — about 174.1 thousand IPv4 addresses.

AS9374 — EDION EDION Corporation

EDION EDION Corporation — about 165.9 thousand IPv4 addresses.

AS9614 — OCT Oita Cable Telecom Co,ltd.

OCT Oita Cable Telecom Co,ltd. — about 165.9 thousand IPv4 addresses.

AS131965 — XSERVER Xserver Inc.

XSERVER Xserver Inc. — about 165.1 thousand IPv4 addresses.

AS9997 — MECHA Suzuka Cable Co.,Ltd

MECHA Suzuka Cable Co.,Ltd — about 157.7 thousand IPv4 addresses.

AS10006 — SECOMTRUST SECOM Trust Systems Co.,Ltd.

SECOMTRUST SECOM Trust Systems Co.,Ltd. — about 146.2 thousand IPv4 addresses.

AS18077 — C-ABLE Yamaguchi Cable Vision Co.,Ltd

C-ABLE Yamaguchi Cable Vision Co.,Ltd — about 143.9 thousand IPv4 addresses.

AS17529 — MEDIACAT STARCAT CABLE NETWORK Co .,LTD.

MEDIACAT STARCAT CABLE NETWORK Co .,LTD. — about 135.4 thousand IPv4 addresses.

AS7670 — CTNET Enecom,Inc.

CTNET Enecom,Inc. — about 134.7 thousand IPv4 addresses.

AS2504 — NCA5 Kyoto University

NCA5 Kyoto University — about 132.1 thousand IPv4 addresses.

AS37917 — UTINS University of Tsukuba

UTINS University of Tsukuba — about 132.1 thousand IPv4 addresses.

AS7509 — HINES Hokkaido University

HINES Hokkaido University — about 131.3 thousand IPv4 addresses.

AS17687 — NICE National University Corporation Nagoya University

NICE National University Corporation Nagoya University — about 131.3 thousand IPv4 addresses.

AS4729 — JAEA Japan Atomic Energy Agency

JAEA Japan Atomic Energy Agency — about 131.1 thousand IPv4 addresses.

AS9355 — NICT National Institute of Information and Communications Technology

NICT National Institute of Information and Communications Technology — about 131.1 thousand IPv4 addresses.

AS38635 — KEIO-NET Keio University

KEIO-NET Keio University — about 131.1 thousand IPv4 addresses.

AS63802 — MIKAKA-EAST Nippon Telegraph and Telephone East Corporation

MIKAKA-EAST Nippon Telegraph and Telephone East Corporation — about 131.1 thousand IPv4 addresses.

AS7516 — TOHKNET TOHKnet Co.,Inc.

TOHKNET TOHKnet Co.,Inc. — about 119 thousand IPv4 addresses.

AS24572 — YAHOO-JP-AS-AP Yahoo Japan

YAHOO-JP-AS-AP Yahoo Japan — about 118.8 thousand IPv4 addresses.

AS3488 — JAXANET Information Systems Department, Japan Aerospace Exploration Agency

JAXANET Information Systems Department, Japan Aerospace Exploration Agency — about 115.2 thousand IPv4 addresses.

AS10021 — KVH KVH Co.,Ltd

KVH KVH Co.,Ltd — about 110.8 thousand IPv4 addresses.

AS38631 — LINE LY Corporation

LINE LY Corporation — about 108.3 thousand IPv4 addresses.

AS59108 — KATCH-NET KATCH NETWORK INC.

KATCH-NET KATCH NETWORK INC. — about 96.3 thousand IPv4 addresses.

AS17534 — NSK NSK Co.,Ltd.

NSK NSK Co.,Ltd. — about 94.2 thousand IPv4 addresses.

AS131921 — GMOCL GMO GlobalSign Holdings K.K.

GMOCL GMO GlobalSign Holdings K.K. — about 92.9 thousand IPv4 addresses.

AS17707 — DATAHOTEL-JP AS for DATAHOTEL, which is one of iDC in Japan

DATAHOTEL-JP AS for DATAHOTEL, which is one of iDC in Japan — about 90.4 thousand IPv4 addresses.

AS4678 — FINE Canon IT Solutions Inc.

FINE Canon IT Solutions Inc. — about 90.1 thousand IPv4 addresses.

AS9993 — CTC-ODC ITOCHU Techno-Solutions Corporation

CTC-ODC ITOCHU Techno-Solutions Corporation — about 89.1 thousand IPv4 addresses.

AS24282 — KIR KAGOYA JAPAN Inc.

KIR KAGOYA JAPAN Inc. — about 89.1 thousand IPv4 addresses.

AS58791 — GMOOSK-NET GMO Internet Group, Inc.

GMOOSK-NET GMO Internet Group, Inc. — about 86.8 thousand IPv4 addresses.

AS17514 — AICS Otsuka Corp.

AICS Otsuka Corp. — about 84 thousand IPv4 addresses.

AS9466 — UUNET-JP-AP UUNET Japan Limited

UUNET-JP-AP UUNET Japan Limited — about 82.9 thousand IPv4 addresses.

AS9600 — SONYTELECOM So-net Corporation

SONYTELECOM So-net Corporation — about 82.9 thousand IPv4 addresses.

AS7511 — SYNAPSE SYNAPSE Co.,Ltd.

SYNAPSE SYNAPSE Co.,Ltd. — about 78.8 thousand IPv4 addresses.

AS9622 — KCT Kurashiki Cable TV

KCT Kurashiki Cable TV — about 78.8 thousand IPv4 addresses.

AS18260 — E-CATV EHIME CATV CO.,LTD.

E-CATV EHIME CATV CO.,LTD. — about 78.6 thousand IPv4 addresses.

AS38628 — WINK-NET HIMEJI CABLE TELEVISION CORPORATION

WINK-NET HIMEJI CABLE TELEVISION CORPORATION — about 77.8 thousand IPv4 addresses.

AS9621 — II-OKINAWA Okinawa Telecommunication Network Co.,Inc

II-OKINAWA Okinawa Telecommunication Network Co.,Inc — about 76.8 thousand IPv4 addresses.

AS2505 — HEPNET-J High Energy Accelerator Research Organization, KEK

HEPNET-J High Energy Accelerator Research Organization, KEK — about 74.2 thousand IPv4 addresses.

AS55374 — FJCLOUD-EAST FUJITSU LIMITED

FJCLOUD-EAST FUJITSU LIMITED — about 74.2 thousand IPv4 addresses.

AS10000 — NCM Nagasaki Cable Media Inc.

NCM Nagasaki Cable Media Inc. — about 73.7 thousand IPv4 addresses.

AS58647 — KAGAWAU-AS Kagawa University

KAGAWAU-AS Kagawa University — about 73.7 thousand IPv4 addresses.

AS23781 — TOYAMA-AN-AS Toyama University

TOYAMA-AN-AS Toyama University — about 72.7 thousand IPv4 addresses.

AS9615 — TEES TOYOHASHI CABLE NETWORK INC.

TEES TOYOHASHI CABLE NETWORK INC. — about 71.7 thousand IPv4 addresses.

AS17939 — MCN-NET01 miyazaki cabletelevision network Co.,LTD

MCN-NET01 miyazaki cabletelevision network Co.,LTD — about 71.7 thousand IPv4 addresses.

AS7502 — IP-KYOTO Advanced Software Technology & Management Research Institute of KYOTO

IP-KYOTO Advanced Software Technology & Management Research Institute of KYOTO — about 70.1 thousand IPv4 addresses.

AS17947 — S-UTOPIA SAKURA KCS Corporation.

S-UTOPIA SAKURA KCS Corporation. — about 69.6 thousand IPv4 addresses.

AS18271 — EVONET Sojitz Tech Innovation Co., Ltd.

EVONET Sojitz Tech Innovation Co., Ltd. — about 69.6 thousand IPv4 addresses.

AS23820 — RAKUTEN Rakuten Group, Inc.

RAKUTEN Rakuten Group, Inc. — about 69.6 thousand IPv4 addresses.

AS37918 — ECL-INET Nippon Telegraph and Telephone Corporation

ECL-INET Nippon Telegraph and Telephone Corporation — about 69.4 thousand IPv4 addresses.

AS7672 — FITWEB Hokuden Information System Service Co.,Ltd.

FITWEB Hokuden Information System Service Co.,Ltd. — about 68.4 thousand IPv4 addresses.

AS4730 — ODINS Osaka University

ODINS Osaka University — about 67.6 thousand IPv4 addresses.

AS55391 — MF-NATIVE6-E INTERNET MULTIFEED CO.

MF-NATIVE6-E INTERNET MULTIFEED CO. — about 67.6 thousand IPv4 addresses.

AS55392 — MF-NATIVE6-W INTERNET MULTIFEED CO.

MF-NATIVE6-W INTERNET MULTIFEED CO. — about 67.6 thousand IPv4 addresses.

AS17961 — MITENE mitene internet co., ltd.

MITENE mitene internet co., ltd. — about 67.1 thousand IPv4 addresses.

AS18268 — JANIS Naganoken Kyodou Densan Co.Ltd.

JANIS Naganoken Kyodou Densan Co.Ltd. — about 67.1 thousand IPv4 addresses.

AS38634 — DWANGO DWANGO Co.,Ltd.

DWANGO DWANGO Co.,Ltd. — about 67.1 thousand IPv4 addresses.

AS23816 — YAHOO LY Corporation

YAHOO LY Corporation — about 66.6 thousand IPv4 addresses.

AS23720 — RMNI-AS-AP Rakuten Mobile Network, Inc.

RMNI-AS-AP Rakuten Mobile Network, Inc. — about 66.3 thousand IPv4 addresses.

AS24261 — MIE-U Mie University

MIE-U Mie University — about 66.3 thousand IPv4 addresses.

AS150363 — THIN-NET SoftEther Corporation

THIN-NET SoftEther Corporation — about 66.3 thousand IPv4 addresses.

AS131158 — NAIST-AS Nara Institute of Science and Technology, National University Corporation

NAIST-AS Nara Institute of Science and Technology, National University Corporation — about 66 thousand IPv4 addresses.

AS150359 — CTTNET Cable Television TOYAMA Inc.

CTTNET Cable Television TOYAMA Inc. — about 66 thousand IPv4 addresses.

AS17932 — JAIST Japan Advanced Institute of Science and Technology

JAIST Japan Advanced Institute of Science and Technology — about 65.8 thousand IPv4 addresses.

AS17944 — JWA Japan Weather Association

JWA Japan Weather Association — about 65.8 thousand IPv4 addresses.

AS2500 — WIDE-BB WIDE Project

WIDE-BB WIDE Project — about 65.5 thousand IPv4 addresses.

AS2508 — KYUSHU-U Kyushu University

KYUSHU-U Kyushu University — about 65.5 thousand IPv4 addresses.

AS2513 — JST Japan Science and Technology Agency

JST Japan Science and Technology Agency — about 65.5 thousand IPv4 addresses.

AS2526 — HITNET Global Solution 2nd Office. IT Strategy & Digital Integration Division. Hitachi, Ltd.

HITNET Global Solution 2nd Office. IT Strategy & Digital Integration Division. Hitachi, Ltd. — about 65.5 thousand IPv4 addresses.

AS9367 — ISCT Institute of Science Tokyo

ISCT Institute of Science Tokyo — about 65.5 thousand IPv4 addresses.

AS9591 — NIFS National Institute for Fusion Science

NIFS National Institute for Fusion Science — about 65.5 thousand IPv4 addresses.

AS9991 — SHUDO-U Hiroshima Shudo University

SHUDO-U Hiroshima Shudo University — about 65.5 thousand IPv4 addresses.

AS10014 — NIHON-U Nihon University

NIHON-U Nihon University — about 65.5 thousand IPv4 addresses.

AS17510 — ISID INFORMATION SERVICES INTERNATIONAL - DENTSU, LTD.

ISID INFORMATION SERVICES INTERNATIONAL - DENTSU, LTD. — about 65.5 thousand IPv4 addresses.

AS17512 — JAL Japan Airlines Co.,Ltd.

JAL Japan Airlines Co.,Ltd. — about 65.5 thousand IPv4 addresses.

AS17523 — AOYAMA Aoyama Gakuin University

AOYAMA Aoyama Gakuin University — about 65.5 thousand IPv4 addresses.

AS17701 — SEINAN Seinan Gakuin University

SEINAN Seinan Gakuin University — about 65.5 thousand IPv4 addresses.

AS17946 — GUCC Gifu University

GUCC Gifu University — about 65.5 thousand IPv4 addresses.

AS17956 — WASEDA WASEDA University

WASEDA WASEDA University — about 65.5 thousand IPv4 addresses.

AS17960 — RAINS-AS University of the Ryukyus

RAINS-AS University of the Ryukyus — about 65.5 thousand IPv4 addresses.

AS18087 — TOYO Toyo University

TOYO Toyo University — about 65.5 thousand IPv4 addresses.

AS18124 — OUS-NET Okayama University of Science

OUS-NET Okayama University of Science — about 65.5 thousand IPv4 addresses.

AS18125 — MAFFIN Ministry of Agriculture, Forestry and Fisheries Research Network

MAFFIN Ministry of Agriculture, Forestry and Fisheries Research Network — about 65.5 thousand IPv4 addresses.

AS18276 — KAISER Kansai University

KAISER Kansai University — about 65.5 thousand IPv4 addresses.

AS23615 — KUSANAGI University of Shizuoka

KUSANAGI University of Shizuoka — about 65.5 thousand IPv4 addresses.

AS23623 — CHUO-U Chuo University

CHUO-U Chuo University — about 65.5 thousand IPv4 addresses.

AS23807 — RITSUMEI Ritsumeikan University

RITSUMEI Ritsumeikan University — about 65.5 thousand IPv4 addresses.

AS24248 — ASN-WADAI-U Wakayama University

ASN-WADAI-U Wakayama University — about 65.5 thousand IPv4 addresses.

AS24254 — KYOTO-SU Kyoto Sangyo University

KYOTO-SU Kyoto Sangyo University — about 65.5 thousand IPv4 addresses.

AS24268 — SAINS National University Corporation Shizuoka University

SAINS National University Corporation Shizuoka University — about 65.5 thousand IPv4 addresses.

AS24275 — TOTO TOTO LTD.

TOTO TOTO LTD. — about 65.5 thousand IPv4 addresses.

AS37910 — CUNET Chubu University

CUNET Chubu University — about 65.5 thousand IPv4 addresses.

AS37919 — SEGASAMMY SEGA SAMMY HOLDINGS INC.

SEGASAMMY SEGA SAMMY HOLDINGS INC. — about 65.5 thousand IPv4 addresses.

AS38641 — LEONET-AS Osaka Sangyo University

LEONET-AS Osaka Sangyo University — about 65.5 thousand IPv4 addresses.

AS38654 — INES-NETWORK INES Corporation.

INES-NETWORK INES Corporation. — about 65.5 thousand IPv4 addresses.

AS45685 — RIKKYO-U Rikkyo Gakuin Rikkyo University

RIKKYO-U Rikkyo Gakuin Rikkyo University — about 65.5 thousand IPv4 addresses.

AS55379 — HOSEI-NET Hosei University

HOSEI-NET Hosei University — about 65.5 thousand IPv4 addresses.

AS55380 — KAINS Kanazawa University

KAINS Kanazawa University — about 65.5 thousand IPv4 addresses.

AS55390 — TUSNET Tokyo University of Science

TUSNET Tokyo University of Science — about 65.5 thousand IPv4 addresses.

AS55904 — KOGAKUIN-AS KOGAKUIN University

KOGAKUIN-AS KOGAKUIN University — about 65.5 thousand IPv4 addresses.

AS58652 — KOCHI-U-NET Kochi University

KOCHI-U-NET Kochi University — about 65.5 thousand IPv4 addresses.

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