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.
1,297 autonomous systems registered to Japan. Click an AS for detail.
| 669 |
| AS17506JP | UCOM - ARTERIA Networks Corporation | 5.5M | 41 |
| AS2497JP | IIJ - Internet Initiative Japan Inc. | 4M | 206 |
| AS2527JP | So-net - Sony Network Communications Inc. | 3.9M | 76 |
| AS2518JP | BIGLOBE - BIGLOBE Inc. | 3.7M | 35 |
| AS17511JP | OPTAGE - OPTAGE Inc. | 3M | 68 |
| FINSTADIUMX-AS-AP - FinStadiumX Co., Ltd. |
| — |
| — |
| 0 |
| AS132496JP | SBIBITS-AS-AP - SBI BITS Co., Ltd. | — | — | 0 |
| AS131990JP | AS131990-86 - JPNIC-4Byte-ASBLOCK-AP | — | — | 0 |
| AS9594JP | AS9594-4 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS2499JP | ipv4exh-lab - Japan Network Information Center | — | — | 0 |
| AS4702JP | AS4702-20 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS131922JP | LN-NET - leafnet Co.,Ltd. | — | — | 0 |
| AS18089JP | HIKARI-NWC - KDDI Corporation | — | — | 0 |
| AS9375JP | AS9375-27 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS140868JP | TAKATASDCC-AS-AP - TakataSDCC Net | — | 2 | 2 |
| AS152860JP | GJW-KK - GANJINGWORLD K.K. | — | 1 | 1 |
| AS17703JP | AS17703-31 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9743JP | NIPPONEDUIX-AS-AP - Nippon EDUIX | — | 1 | 1 |
| AS24121JP | ASN-EQIX-OSAKA-AP - Equinix Asia Pacific | — | 512 | 2 |
| AS4709JP | NETLAPUTA - NetLaputa Corporation | — | — | 0 |
| AS24256JP | SOFTBANKBB - SOFTBANK Corp. | — | — | 0 |
| AS4700JP | NIJI-NET - Niji-Net Inc. | — | — | 0 |
| AS9369JP | AS9369-21 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS55906JP | AS55906-19 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9373JP | AS9373-25 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS10020JP | AS10020-31 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS2517JP | AS2517-21 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17945JP | iTV - iTV Co,Ltd | — | — | 0 |
| AS131947JP | NOS-SERVICE - Net One Systems Co., Ltd. | — | — | 0 |
| AS7517JP | AS7517-18 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS150360JP | NTTE-WFL-AS - NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION | — | — | 0 |
| AS146968JP | COMSQUARE - COMSQUARE Co.,Ltd. | — | — | 0 |
| AS55873JP | SJMAPNIC-JP - St. Jude Medical | — | — | 0 |
| AS23800JP | AS23800-28 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17527JP | MEDIAS - CHITA MEDIAS NETWORK INC. | — | — | 0 |
| AS9603JP | AS9603-13 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS7523JP | TECHNOW - RICOH JAPAN Corporation | — | — | 0 |
| AS4674JP | AS4674-3 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9352JP | KUMAGAYA - KuMaGaYaNet | — | — | 0 |
| AS140642JP | WASABI-AS-AP - Wasabi Technologies Inc. | — | — | 0 |
| AS17949JP | TEU - Tokyo University of Technorogy | — | — | 0 |
| AS18280JP | AS18280-22 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS18147JP | AS18147-27 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4722JP | SB4722 - SoftBank Corp. | — | — | 0 |
| AS9380JP | CNCI-AS - Community Network Center Inc. | — | — | 0 |
| AS7669JP | AS7669-10 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17517JP | AS17517-15 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS56218JP | QGPOP-AS-AP - QGPOP | — | 65.5K | 1 |
| AS214772JP | NAZUKI-AS CHEN LUOAN | — | 16 | 1 |
| AS4720JP | AS4720-38 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS55372JP | OIX - University of the Ryukyus | — | — | 0 |
| AS37911JP | AS37911-24 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |