Loading…
How Japan ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to Japan over time.
The largest autonomous systems registered to Japan by IPv4 footprint.
Share of announced address space covered by valid Route Origin Authorizations.
1,300 autonomous systems registered to Japan. Click an AS for detail.
| 668 |
| AS17506JP | UCOM - ARTERIA Networks Corporation | 5.5M | 41 |
| AS2497JP | IIJ - Internet Initiative Japan Inc. | 4M | 236 |
| AS2527JP | So-net - Sony Network Communications Inc. | 3.9M | 76 |
| AS2518JP | BIGLOBE - BIGLOBE Inc. | 3.7M | 35 |
| AS17511JP | OPTAGE - OPTAGE Inc. | 3M | 68 |
| — |
| — |
| 0 |
| AS24056JP | SINGTEL-EXPAN-JP - Internet Data Centre | — | — | 0 |
| AS151026JP | TAO_SAO_PAULO2 - AT&T TAO Cloud Access Node | — | — | 0 |
| AS18073JP | AS18073-7 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS24567JP | QTINC-AS-AP - QT Inc. | — | — | 0 |
| AS24274JP | AS24274-27 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS37903JP | AS37903-16 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4732JP | DION - KDDI CORPORATION | — | — | 0 |
| AS37927JP | NOMURATRADE - Nomura Researth Institute, Ltd. | — | — | 0 |
| AS17688JP | AS17688-16 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4704JP | SANNET - Rakuten Mobile, Inc. | — | — | 0 |
| AS132726JP | SANYUNETCORP-JP - 5-3 Miyuki-cho | — | — | 0 |
| AS63807JP | AS63807-38 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS131974JP | TOCHIGIX - Cable TV Corporation | — | — | 0 |
| AS24272JP | AS24272-25 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS63803JP | AS63803-34 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS38627JP | BAIDUJP - Baidu, Inc. | — | — | 0 |
| AS7507JP | AS7507-8 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS7515JP | GIN-NTTLJ - NTT Ltd Japan Corporation | — | — | 0 |
| AS137072JP | LEONCOLTD-AS-AP - LEON CO.LTD | — | — | 0 |
| AS26132JP | DDPS - DDPS Networks, LLC | — | — | 0 |
| AS151382JP | AS151382-12 - JPNIC-4Byte-ASBLOCK-AP | — | — | 0 |
| AS4687JP | AS4687-5 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS131152JP | BBIX-L3RPX - BBIX,Inc. | — | — | 0 |
| AS132373JP | ASIAN-WEB-JP - Neomet Aoyama BLDG.3F 2-7-13 Shibuya | — | — | 0 |
| AS4719JP | J-Stream-4 - J-Stream Inc. | — | — | 0 |
| AS134703JP | JCIX - Japan Community IX Association | — | — | 0 |
| AS9599JP | INFOPEPPER - EJWORKS CORPORATION | — | — | 0 |
| AS38647JP | GeekN-NetLab - NEI's NetLab | 256 | — | 1 |
| AS138652JP | SGCOM-AS-AP - Super Godzilla Communications GK | 256 | 65.5K | 2 |
| AS152724JP | POINT72-AS-AP - Point72 Japan Limited | 256 | — | 1 |
| AS151376JP | SHR-TYO-NET - Solare Hotels and Resorts Co., Ltd. | 256 | — | 1 |
| AS152867JP | TCNET - Takaoka cable network | 256 | 4.1K | 2 |
| AS151378JP | CSAISON-NET - Credit SAISON Co., Ltd. | 256 | — | 1 |
| AS37905JP | BRASTEL-NET - Brastel Co.,Ltd | 256 | — | 1 |
| AS59128JP | KMC - Kyoto University Microcomputer Club | 256 | 1 | 2 |
| AS152869JP | ICJ-NET - ICJ, Inc. | 256 | — | 1 |
| AS55949JP | TECHNOPROHOLDINGS-JP - Technopro Holdings | 256 | — | 1 |
| AS132211JP | FXCM-ASIA-AP - FX Corporate LLC | 256 | — | 1 |
| AS132119JP | TECPRESSO-NET-AP - TECPRESSO Inc. | 256 | 1 | 2 |
| AS59111JP | AIU-NET - Akita International University | 256 | 1 | 2 |
| AS55901JP | SCEI-NET - Sony Computer Entertainment Inc | 256 | 1 | 2 |
| AS133405JP | RETNKK-AS-AP - RETN Co., Ltd. | 256 | 1 | 2 |
| AS18131JP | DXNW - NTT DOCOMO BUSINESS, Inc. | 256 | 1 | 2 |
| AS23833JP | MARUSAN-NET - Marusan Securities Co., LTD. | 256 | — | 1 |
| AS55895JP | echigo-IX - N.S.Computer Service Co.,Ltd. | 256 | 1 | 2 |
| AS131924JP | KAP-NET - Kansai Airports | 256 | 1 | 2 |