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 |
| AS55817JP | NTTECL-AS-AP - Nippon Telegraph and Telephone Corporation PF Labs | — | — | 0 |
| AS17795JP | NVJ-AP - Netvein.co.jp | — | — | 0 |
| AS4735JP | AS4735-53 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9360JP | AS9360-12 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4681JP | AS4681-10 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS18050JP | TELSTRAGLOBAL - Telstra Global Internet Services Network Blocks | — | — | 0 |
| AS18130JP | AS18130-10 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23834JP | AS23834-62 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS24292JP | AS24292-45 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS45673JP | OECU-NET - Osaka Electro-Communication University | — | — | 0 |
| AS18261JP | AS18261-3 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS140237JP | TAO_PHOENIX_DRT - AT&T TAO Cloud Access Node | — | — | 0 |
| AS151028JP | TAO_SYDNEY_LAB - AT&T TAO Cloud Access Node | — | — | 0 |
| AS4710JP | NTTV6NET2 - Nippon Telegraph and Telephone Corporation | — | — | 0 |
| AS135304JP | VMWARE-AS-AP - VMWare Incorporation | — | — | 0 |
| AS2498JP | AS2498-2 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4629JP | TELSTRAGLOBAL - Telstra Global Internet Services Network Blocks | — | — | 0 |
| AS134396JP | BOMBORATECH-AS-ANYCAST15 - BOMBORA TECHNOLOGIES Anycast system | — | — | 0 |
| AS7685JP | AS7685-26 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17935JP | AS17935-6 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS18083JP | AS18083-17 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS38895JP | AMAZON-AS-AP - Amazon.com Tech Telecom | — | — | 0 |
| AS9996JP | KDDIIP-VPN - KDDI Corporation | — | — | 0 |
| AS133795JP | CHOOPALLC-AS-AP - The Constant Company, LLC | — | — | 0 |
| AS150365JP | LL-NET - LifeLink Co.,Ltd | — | — | 0 |
| AS151013JP | TAO_LONDON - AT&T TAO Cloud Access Node | — | — | 0 |
| AS147295JP | METROENGINESINC-AS-AP - Metro Engines Inc | — | — | 0 |
| AS150355JP | BBIX-MAPSRS - BBIX,Inc. | — | — | 0 |
| AS4703JP | AS4703-21 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS136796JP | CL-JP-AS - CORELINK JAPAN | — | — | 0 |
| AS7528JP | AS7528-29 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17704JP | AS17704-32 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS18079JP | AS18079-13 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23806JP | HBS - Chupicom Inc. | — | — | 0 |
| AS151075JP | AS-VMW-NRT - VMWare Incorporation | — | — | 0 |
| AS18270JP | TOIN - Toin University of Yokohama | — | — | 0 |
| AS23636JP | AS23636-25 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS63788JP | MOCHIYA-NET - MOCHIYA Inc. | — | — | 0 |
| AS131908JP | Intec-DCAN - INTEC Inc. | — | — | 0 |
| AS152467JP | ETS-AS-AP - ETS TELECOM ETS TELCO | — | — | 0 |
| AS2524JP | RIM - EJWORKS CORPORATION | — | — | 0 |
| AS4687JP | AS4687-5 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS7515JP | GIN-NTTLJ - NTT Ltd Japan Corporation | — | — | 0 |
| AS9356JP | AS9356-8 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9599JP | INFOPEPPER - EJWORKS CORPORATION | — | — | 0 |
| AS18095JP | REITAKU - Reitaku University | — | — | 0 |