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 |
| 1K |
| — |
| 1 |
| AS136586JP | INCOMMJAPANKK-AS-AP - InComm Japan K.K. | 1K | — | 3 |
| AS131946JP | MU-NET - MUSASHINO UNIVERSITY E.F. | 1K | — | 3 |
| AS59097JP | OCH-NET - Okinawa Cross Head Co., Ltd. | 1K | — | 3 |
| AS63799JP | GHOST - Ghost Network | 1K | 65.5K | 4 |
| AS59110JP | BPS - BPS Inc. | 1K | 65.5K | 2 |
| AS133476JP | FIRST-AS-AP - First Innovation K.K. | 1K | — | 1 |
| AS23799JP | NDA - National Defense Academy | 1K | — | 4 |
| AS55382JP | HOT-CHA - Nagato city office | 1K | — | 1 |
| AS152324JP | M3XNETCOLTD-AS-AP - 3XNET Co., Ltd. | 1K | — | 4 |
| AS58645JP | marinet - Miyagi Cable TV Co.,Ltd | 1K | 65.5K | 2 |
| AS153929JP | ABI-AS-AP - Allied Business Inc. | 1K | 256 | 5 |
| AS401474JP | ENXO-NET-AS - ENXO LLC | 1K | — | 4 |
| AS18289JP | TAO_TORONTO - AT&T TAO Cloud Access Node | 1K | — | 1 |
| AS133900JP | GSI-AP - Gilead Sciences, Inc. | 896 | — | 4 |
| AS59349JP | GMO-Z-COM - GMO-Z.COM PTE. LTD. | 768 | 1 | 3 |
| AS37888JP | HORIBA-NET - HORIBA, Ltd. | 768 | — | 3 |
| AS24283JP | MIEDEN-NET - Mieden Co.,Ltd. | 768 | — | 3 |
| AS55911JP | kazukichi - kazukichi | 768 | 66.1K | 8 |
| AS63776JP | MERCARI-JP - Mercari, Inc. | 768 | 512 | 4 |
| AS38074JP | SDCC-AS-AP - SDCC Japan-West Area | 768 | 32.8K | 5 |
| AS24263JP | HONDA-NET - HONDA MOTOR Co., Ltd. | 768 | — | 3 |
| AS131077JP | TOHMATSU-NET - Deloitte Tohmatsu Group LLC | 768 | — | 3 |
| AS45679JP | TOMOCHA-NET - Tatsumi, Tomo | 768 | 2 | 4 |
| AS152645JP | FLEXTECHINC-AS-AP - Flextech Inc. | 768 | 65.5K | 4 |
| AS150369JP | Infal - TelHi Corporation | 768 | 65.5K | 4 |
| AS146987JP | GMOCL-NET - GMO GlobalSign Holdings K.K. | 768 | — | 3 |
| AS152872JP | VL-NET - VirtualLink Networks | 512 | — | 2 |
| AS59120JP | TINS-NET - Tsukuba Internet Service Corporation | 512 | — | 1 |
| AS55396JP | FNCLAB - NRI SecureTechnologies, Ltd | 512 | — | 2 |
| AS138352JP | Fractal-NET - Fractal Co., Ltd. | 512 | — | 2 |
| AS150356JP | GMO-BRS - GMO BRAND SECURITY Inc. | 512 | — | 1 |
| AS141461JP | RA-NET - Reconciled Awareness Network | 512 | — | 1 |
| AS133782JP | ELSEVIER-ASIAPACIFIC-AS-AP - Elsevier Ltd | 512 | — | 2 |
| AS4777JP | APNIC-COLO - Asia Pacific Network Information Centre | 512 | 16.4K | 4 |
| AS146974JP | WP-NET - Woven by Toyota, Inc. | 512 | 65.5K | 2 |
| AS152876JP | COMOTA - Comota Co., Ltd. | 512 | 65.5K | 2 |
| AS152873JP | NEODY-NET - Neodyland | 512 | 65.5K | 4 |
| AS7257JP | MARU-NET OTO GK | 512 | 524.3K | 3 |
| AS151390JP | RUTILEA-A - RUTILEA, Inc. | 512 | — | 1 |
| AS139255JP | U-NEXT-AS-AP - U-NEXT Co.,Ltd. | 512 | — | 2 |
| AS63804JP | DOVA-YFM-NET - DOVA Corporation | 512 | — | 1 |
| AS24260JP | KINJO-AS - Board of trusty: Kinjo-Gakuen | 512 | — | 1 |
| AS150366JP | Demae-can-NW - demae-can co. ltd | 512 | — | 2 |
| AS137819JP | BEEKS-AS-AP - Beeks Financial Cloud (Japan) | 512 | — | 2 |
| AS4717JP | AI3 - WIDE Project | 512 | 81.9K | 4 |
| AS945JP | JP-77-20220621 HAONAN YANG | 512 | — | 2 |