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 |
| AS38222JP | SDCCIX-EAST - Shimane-Japan Internet Exchange | — | — | 0 |
| AS152728JP | NIPPONCOMMSINC-AS-AP - NIPPON COMMUNICATIONS INC. | — | — | 0 |
| AS23812JP | AS23812-40 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17704JP | AS17704-32 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS63917JP | AMWAYJAPANGK-JP - 7-1, Udagawacho, | — | — | 0 |
| AS56023JP | SMARTNET-AS-AP - SmartRams Co., Ltd. | — | — | 0 |
| AS7508JP | AS7508-9 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS63000JP | US-CORE - Auk LLC | — | — | 0 |
| AS131155JP | HANABI4 - NTT DOCOMO BUSINESS, Inc. | — | — | 0 |
| AS150355JP | BBIX-MAPSRS - BBIX,Inc. | — | — | 0 |
| AS37923JP | FIC - NTT DOCOMO BUSINESS, Inc. | — | — | 0 |
| AS151035JP | TAO_LONDON - AT&T TAO Cloud Access Node | — | — | 0 |
| AS151602JP | UTC-AS-AP - UD Trucks Corporation | — | — | 0 |
| AS4679JP | AS4679-8 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS3391JP | ERX-ASCII-NET - ASCIInet Corporation | — | — | 0 |
| AS131908JP | Intec-DCAN - INTEC Inc. | — | — | 0 |
| AS17684JP | AS17684-12 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS1233JP | ERX-NASDA-ASN - National Space Development Agency | — | — | 0 |
| AS151031JP | TAO_AUCKLAND - AT&T TAO Cloud Access Node | — | — | 0 |
| AS3510JP | ERX-RWC-NET - Real World Computing Partnership | — | — | 0 |
| AS4692JP | INTERGATE - InternetWare Co., LTD. | — | — | 0 |
| AS17503JP | AS17503-1 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23787JP | AS23787-15 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS7518JP | AS7518-19 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17527JP | MEDIAS - CHITA MEDIAS NETWORK INC. | — | — | 0 |
| AS7526JP | MIND-US - Mitsubishi Electric Information Network Corporation | — | — | 0 |
| AS9373JP | AS9373-25 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS63787JP | AS63787-18 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS151389JP | Synergy-net - Synergy Cross Corporation | — | — | 0 |
| AS4706JP | AS4706-24 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS401655JP | TRANSVISIONNET - TransVision LLC | — | — | 0 |
| AS17674JP | AS17674-2 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS24273JP | CANON - CANON INC. | — | — | 0 |
| AS151032JP | TAO_SEATTLE - AT&T TAO Cloud Access Node | — | — | 0 |
| AS132496JP | SBIBITS-AS-AP - SBI BITS Co., Ltd. | — | — | 0 |
| AS152467JP | ETS-AS-AP - ETS TELECOM ETS TELCO | — | — | 0 |
| AS23802JP | AS23802-30 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS10033JP | IVANET-TYO-AP - iBasis Tokyo ICO | — | — | 0 |
| AS151381JP | AS151381-11 - JPNIC-4Byte-ASBLOCK-AP | — | — | 0 |
| AS146970JP | BBS - BBSakura Networks, Inc. | — | — | 0 |
| AS151021JP | TAO_HONG_KONG4 - AT&T TAO Cloud Access Node | — | — | 0 |
| AS9995JP | AS9995-6 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS136407JP | VIRTUSTREAMJP-AS-AP - Virtustream Cloud Services Australia Pty Limited | — | — | 0 |
| AS45682JP | ASN-EXCITE - Excite Japan Co., Ltd. | — | — | 0 |
| AS55817JP | NTTECL-AS-AP - Nippon Telegraph and Telephone Corporation PF Labs | — | — | 0 |
| AS154661JP | Nintatsu-2 - Nintatsu Global Telecommunications Corporation | — | — | 0 |