Allocated/Assigned AS Numbers (ASN) to Japan are 195

ASN List of Japan shows how many ASNs and IP Network addresses are assigned to each ISP and organization in Japan. An IP address block or an ASN allocated to an Internet service provider or other organization is not owned by that organization.

AS NumberISP/OrganizationIP Network Addresses
AS62184 TENBIT TENBIT Network, JP 1
AS206689 BFC-TY3, JP 4
AS209341 JPASN, JP 6
AS209396 DO-JAPAN, JP 0
AS37888 HORIBA-NET HORIBA, Ltd., JP 8
AS173 ERX-ECLNET Electrical Communications Laboratories, JP 2
AS1233 ERX-NASDA-ASN National Space Development Agency, JP 0
AS2497 IIJ Internet Initiative Japan Inc., JP 481
AS2554 IDCF2554 IDC Frontier Inc., JP 121
AS2713 ERX-INTERSPIN-AS AT&T Jens Corporation, JP 0
AS2907 SINET-AS Research Organization of Information and Systems, National Institute of Informatics, JP 540
AS2915 ERX-SPIN-NET AT&T Jens Corporation, JP 0
AS3391 ERX-ASCII-NET ASCIInet Corporation, JP 0
AS3488 JAXANET Information Systems Department, Japan Aerospace Exploration Agency, JP 5
AS3510 ERX-RWC-NET Real World Computing Partnership, JP 0
AS3775 ERX-IBMAP-MPN Global Network Solutions, IBM Japan, Ltd., JP 0
AS4197 JPNIC-2BYTE-ASBLOCK-AP for assignment to JPNIC members, JP 0
AS4251 ERX-TWICS TWICS Co. Ltd., JP 0
AS4629 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 2
AS4672 IBMNET IBM Japan, Ltd., JP 49
AS4774 ABONE-AS A-Bone by Internet Initiative Japan Inc., JP 12
AS4777 APNIC-NSPIXP2-AS Asia Pacific Network Information Centre, JP 2
AS4785 XTOM-AS-JP xTom, JP 92
AS7488 JPNIC-2BYTE-ASBLOCK-AP for assignment to JPNIC members, JP 0
AS7500 M-ROOT-DNS WIDE Project, JP 7
AS7543 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 744
AS7660 APAN-JP Asia Pacific Advanced Network - Japan, JP 10
AS9222 INTEL-ONLINE-SERVICES-ASIA Intel Online Services Asia, JP 2
AS9466 UUNET-JP-AP UUNET Japan Limited, JP 5
AS9591 NIFS National Institute for Fusion Science, JP 2
AS9625 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 44
AS9824 JTCL-JP-AS Jupiter Telecommunication Co. Ltd, JP 455
AS9904 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 1
AS9909 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 32
AS9935 AGNSCUS-HK AGNS Customer AS, JP 1
AS9990 NIANDC Nippon Information and Communication Corporation, JP 1
AS10026 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 4001
AS10033 IVANET-TYO-AP iBasis Tokyo ICO, JP 5
AS10124 AMAZON-AP-RESOURCES-AS-AP-NRT Amazon Data Services Japan KK, JP 0
AS10209 SYNOPSYS-AS-JP-AP Japan HUB and Data Center, JP 2
AS10807 ERX-HOLE-IN-ONE Hitachi Business International, Ltd., JP 0
AS17503 JPNIC-JP-ASN-BLOCK Japan Network Information Center, JP 0
AS17661 NHN-JAPAN NHN JAPAN Corp., JP 103
AS17673 MKINET MITSUI KNOWLEDGE INDUSTRY CO., LTD., JP 3
AS17707 DATAHOTEL-JP AS for DATAHOTEL, which is one of iDC in Japan, JP 486
AS17751 JPNIC-2BYTE-ASBLOCK-AP for assignment to JPNIC members, JP 0
AS17795 NVJ-AP Netvein.co.jp, JP 118
AS17801 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 0
AS17905 COMMERZBANK-AP-DRT Commerzbank AG, JP 1
AS17930 JPNIC-JP-ASN-BLOCK Japan Network Information Center, JP 0
AS17977 SINGTEL-JP NF Park Bldg.3F, 9-15, Futaba 2-Chome, JP 16
AS18050 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 1
AS18067 HUMEIA Humeia Corporation, JP 1
AS18084 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 0
AS18085 INFOVALLEY Fujitsu Systems Applications & Support Limited, JP 12
AS18121 INCL Ishikawa Computer Center Co.,LTD., JP 10
AS18193 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 0
AS18258 MS-JP-AS-AP Morgan Stanley Japan Limited, JP 77
AS18259 HIGE NTT Communications Corporation, JP 47
AS18383 CAHI-AS-JP CAHI Corporation, JP 2
AS23661 CLARAONLINE CLARA ONLINE, Inc., JP 35
AS23663 YAHOO-BANGALORE-AS-AP Yahoo Bangalore Network Monitoring Center, JP 2
AS23720 RAKUCOMM-AS-AP Rakuten Communications K.K., JP 25
AS23748 CAT-AS-AP Cat Networks K.K., JP 435
AS23761 XPEDITE-AS-JP Xpedite Systems, JP 16
AS23773 EKZM EKZM co.,ltd., JP 2
AS23885 ORACLEV6-AS-AP Oracle Corporation, JP 13
AS23926 YAHOO-JP3-AP JP DC, JP 12
AS23929 UBIQUITOUS-AS Ubiquitous Corp. Data Center Network., JP 1
AS23940 THOMSON-FINANCIAL-TOKYO THOMSON FINANCIAL. Financial Content provider.Tokyo, JP 4
AS23967 POD Produce On Demand Inc. Streaming Contents Delivery Service Tokyo, JP 15
AS24047 ISC-KIX1 Internet Systems Consortium, Inc., JP 2
AS24056 SINGTEL-EXPAN-JP Internet Data Centre, JP 0
AS24121 ASN-EQIX-OSAKA-AP Equinix Asia Pacific, JP 6
AS24229 KOCHI-IX IX-layers, Inc., JP 8
AS24248 ASN-WADAI-U Wakayama University, JP 2
AS24336 DIGITALBANK-JP DIGITALBANK, Inc., Regional ISP in Japan, JP 13
AS24477 NETAPPAS Network Appliance ASIAPAC, JP 7
AS24512 HAL-INTERNET HAL Internet, Internet Service Provider, Tottori, Japan, JP 3
AS24572 YAHOO-JP-AS-AP Yahoo Japan, JP 5
AS37888 HORIBA-NET HORIBA, Ltd., JP 8
AS37984 CKADMIN-AS-JP Chikushi Jogakuen University, Non-transit AS., JP 5
AS38033 YAHOO-JP2-AP internet content provider, JP 8
AS38043 SRI-AS-AP Sophia Reserch Institute, Ltd., JP 2
AS38080 FSW-TOHOKU-POP Foresightwave INC., JP 1
AS38462 OCE-AS-AP Osaki Computer Engineering Co.Ltd, JP 19
AS38610 APNIC-JP-RD APNIC R&D Centre, JP 0
AS38627 BAIDUJP Baidu, Inc., JP 25
AS38715 TOTTORI-REGIONAL-IX-AS Regional-IX ASN Tottori pref Japan., JP 4
AS38895 AMAZON-AS-AP Amazon.com Tech Telecom, JP 826
AS38910 JPMORGAN-TRANSIT-AS-JP-AP Transit AS Tokyo, JP 1
AS45217 TORA-TRADING-SERVICES Tora Trading Services Ltd., JP 2
AS45436 GRNT-JP-AS-AP Green Net Co., Ltd., JP 56
AS45672 KGC-NET Koga Cable TV Co., Ltd., JP 1
AS45846 FSW-SHIGA-POP Shiga area POP AS Number, JP 2
AS55372 OIX University of the Ryukyus, JP 0
AS55457 JPNIC-2BYTE-ASBLOCK-AP for assignment to JPNIC members, JP 0
AS55569 CRITEO-AS-AP Criteo APAC, JP 15
AS55748 MORSE-JP 7-9-10 Nishi-Shinjuku, JP 0
AS55817 NTTECL-AS-AP Nippon Telegraph and Telephone Corporation PF Labs, JP 0
AS55873 SJMAPNIC-JP Shiodome City Center 15F, JP 2
AS55888 NCP-NET New Culture Production Inc, JP 0
AS55949 TECHNOPROHOLDINGS-JP Technopro Holdings, JP 1
AS56021 NET-RES01-AS-AP NetResource corporation, JP 0
AS56023 SMARTNET-AS-AP SmartRams Co., Ltd., JP 0
AS56024 BIZ-FRONT-AS-AP Biz-front Inc, JP 0
AS56025 APNET-CUS01-AS-AP AMY INC, JP 0
AS56029 CELNET-AS-AP CELL INC., JP 0
AS56033 RAKUIP-AS-AP Rakushasu Inc, JP 0
AS56218 QGPOP-AS-AP QGPOP, JP 1
AS56291 ACE-AS-AP Ace, Inc., JP 6
AS58535 PRIZMNETASIA-AS-AP MarketPrizm BV, JP 1
AS58645 MARINET Miyagi Cable TV Co.,Ltd, JP 1
AS58784 RIS Rissho University, JP 6
AS59091 KAIT-NWLAB Kanagawa Institute of Technology, JP 1
AS63524 ASN-EQIX-CLOUD-OS Equinix Asia Pacific, JP 0
AS63770 ICSCOE-AS Industrial Cyber Security Center of Excellence, JP 14
AS63917 AMWAYJAPANGK-JP 7-1, Udagawacho, JP 1
AS63978 CJL-JP Shin-Toyo Akasaka Building 7F, JP 0
AS63997 TSUKAERUNET Tsukaeru.net, Web Hosting Company, Japan, JP 61
AS131073 TELSTRAGLOBAL Telstra Global Internet Services Network Blocks, JP 0
AS131075 NTT-FBNET Nippon Telegraph and Telephone Corporation PF Labs., JP 0
AS131106 DATAHOTEL-JP AS for DATAHOTEL, which is one of iDC in Japan, JP 0
AS131152 BBIX-NET BBIX,Inc., JP 0
AS131893 RICOH-NET RICOH Company, Ltd., JP 80
AS131904 CYBERFEELINC-JP Cyber Feel Inc., JP 6
AS131905 JPRS-GTLD Japan Registry Services Co., Ltd., JP 6
AS132024 REBYC-JP Rebyc Inc., JP 0
AS132095 HP-ECS-JAPAN HEWLETT PACKARD-SHINSUNA COLO, JP 2
AS132119 BNP-PARIBAS-AP BNP Paribas, JP 1
AS132120 ISC-AP Internet Systems Consortium, JP 0
AS132211 FXCM-ASIA-AP FX Corporate LLC, JP 2
AS132301 NXG-AS C of IPC, JP 9
AS132373 ASIAN-WEB-JP Neomet Aoyama BLDG.3F 2-7-13 Shibuya, JP 0
AS132418 OUTSCALE-AP 1 Rue Royale FR, JP 0
AS132451 HP-JAPAN 2142-1 KUKIOKA MAEDA , JP 0
AS132496 SBIBITS-AS-AP SBI BITS Co., Ltd., JP 1
AS132504 QUALITIA-AS-AP QUALITIA Co.,Ltd, JP 6
AS132592 STARCOLTD-AS-AP Star Co,.Ltd., JP 0
AS132726 SANYUNETCORP-JP 5-3 Miyuki-cho, JP 11
AS132827 GATEWAY-AS-AP GATEWAY INC, JP 56
AS132833 RESEARCH-AS-AP Research Management Ltd., JP 0
AS132888 FREAK-AS-AP Freak, JP 0
AS133203 SBIBITS-JP SBI BITS Co., Ltd., JP 12
AS133476 FIRST-AS-AP First Innovation K.K., JP 29
AS133782 ELSEVIER-ASIAPACIFIC-AS-AP Elsevier Ltd, JP 2
AS133795 CHOOPALLC-AS-AP Choopa, LLC, JP 0
AS133869 SFDC-AS-AP SalesForce.com, Inc., JP 0
AS133900 GSI-AP Gilead Sciences, Inc., JP 5
AS134396 AUSREGISTRY-AS-ANYCAST15 AusRegistry Anycast system, JP 8
AS134532 ATT-NBE-JP ATT NBE Equinix Tokyo, JP 0
AS134606 SATORI-AS-AP Satori Networks, JP 0
AS134827 EYBICL-AS-AP EY Business Initiative Co., Ltd, JP 1
AS135304 VMWARE-AS-AP VMWare Incorporation, JP 1
AS135573 MBC-AS-AP mediatti broadband communications, JP 0
AS136178 FILAPAC-AS-JP FIL Japan Holdings K.K., JP 8
AS136407 VIRTUSTREAMJP-AS-AP Virtustream Cloud Services Australia Pty Limited, JP 8
AS136506 LEONCOLTD-AS-AP LEON CO.LTD, JP 3
AS136769 WINGTECJAPANGK-AS-AP WingTecJapan G.K, JP 12
AS136779 SCHNEIDER-AS-JP Schneider Electric Japan Ltd, JP 0
AS136796 CL-JP-AS CORELINK JAPAN, JP 1
AS137001 OSOA-AS-AP OSOA Co.,LTD., JP 6
AS137008 OPENTEXT-AS-AP-JP-TOK 1120 Shimokuzawa Chuo-ku Sagamihara-shi Kanagawa-ken, JP 1
AS137407 EICINC-AS-AP EIC INC, JP 0
AS137445 AS-PFLINK-JP PF LINK SYSTEMS, JP 27
AS137462 RAKUCOMM-CG-AS-AP Rakuten Communications K.K., JP 2
AS137819 BEEKS-AS-AP Beeks Financial Cloud (Japan), JP 5
AS137875 SHED-DC-AS ShedDC, JP 1
AS137912 GBK-AS-AP Global Broadband K.K, JP 3
AS138033 BBIX-AS-AP BBIX, Inc, JP 4
AS138038 WOLFLAB-AS-AP Wolf Network Lab, JP 0
AS138181 HEXHU Hu_s Tech LLC, JP 0
AS138190 AURURA-AS-AP Aurura Solutions LTD, JP 0
AS138328 SASMFL-AS-AP Skadden, Arps, Slate, Meagher & Flom LLP, JP 1
AS138384 RMNI-AS-AP Rakuten Mobile Network, Inc., JP 6
AS138467 YAHAGI-AS-AP Yahagi Network Solutions, JP 0
AS138632 ENMOE-AS-AP Enmoe Network, JP 0
AS138652 SGCOM-AS-AP Super Godzilla Communications GK, JP 1
AS138686 LIZONGQING-AS-AP LI Zongqing, JP 0
AS138695 TYIS-AS-AP TOYO Internet Service Co., Ltd., JP 1
AS138929 SAKURANETWORK-AS-AP Aisaka Sakura Network, JP 0
AS138968 RAINBOWIDC-AS-AP rainbow network limited, JP 0
AS138980 XCONNECT-AS-AP xconnect, JP 0
AS138986 WINDCLOUDNETWORK-MO INAP Japan Tokyo Shiohama DC, JP 0
AS138992 BLACKHOLE-AS-AP Blackhole Inc., JP 0
AS139058 ACANDWITF-AS-AP Acandwitf.com, JP 0
AS139072 WEWORK-AS-AP Wework Singapore Pte. Ltd., JP 0
AS139076 ENJOYVC-AS-AP EnjoyVC Japan Corporation, JP 2
AS139235 TSRDC-AS-AP Truxgo S. R.L. de C.V., JP 0
AS139238 VMIX-AS-AP VMOON, JP 0
AS139255 U-NEXT-AS-AP U-NEXT Co.,Ltd., JP 2
AS139345 HYVEMANAGEDHOSTINGCORPINC-AS-AP Hyve Managed Hosting Corp Inc, JP 3
AS139358 KANSUIUN-AS-AP Kansuiun Co., Ltd, JP 4
AS139468 DCI-AS-AP DC Communications Inc., JP 1
AS139470 ONECHRONOS-AS-AP OCX GROUP INC., JP 4


What is an autonomous system number (ASN)?

ASN is the acronym for Autonomous System Number. The Internet is a network of networks. A network made up by the joint operation of thousands of networks that belong to different institutions which, in turn, have different functions: access providers, content providers, universities, Internet users, government agencies, etc. These networks that make up the Internet are known as autonomous systems (AS).