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 |
| AS151022JP | TAO_SYDNEY3 - AT&T TAO Cloud Access Node | — | — | 0 |
| AS4715JP | AS4715-33 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17522JP | NTT-WEST - NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION | — | — | 0 |
| AS24047JP | ISC-KIX1 - Internet Systems Consortium, Inc. | — | — | 0 |
| AS24056JP | SINGTEL-EXPAN-JP - Internet Data Centre | — | — | 0 |
| AS131154JP | SHOWNET-4AS - NANO OPT Media, Inc. | — | — | 0 |
| AS134358JP | TAO_ASHBURN - AT&T TAO Cloud Access Node | — | — | 0 |
| AS131082JP | JPIX-4 - Japan Internet Xing Co., Ltd. | — | — | 0 |
| AS151033JP | TAO_MUMBAI2 - AT&T TAO Cloud Access Node | — | — | 0 |
| AS56291JP | ACE-AS-AP - Ace, Inc. | — | — | 0 |
| AS4714JP | AS4714-32 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS4728JP | AS4728-46 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23612JP | AS23612-1 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23825JP | AS23825-53 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS38655JP | SaiNet-AS2 - SaiNet Corporation | — | — | 0 |
| AS56025JP | KARSCOLTD-AS-AP - Kars co.ltd. | — | — | 0 |
| AS17674JP | AS17674-2 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS199767JP | DOVE-AS Pinjia Zhao | — | 256 | 1 |
| AS7673JP | ALLES - ejworks corporation | — | — | 0 |
| AS131899JP | DIG-NET - DIG Inc. | — | — | 0 |
| AS38222JP | SDCCIX-EAST - Shimane-Japan Internet Exchange | — | — | 0 |
| AS151023JP | TAO_SYDNEY5 - AT&T TAO Cloud Access Node | — | — | 0 |
| AS4700JP | NIJI-NET - Niji-Net Inc. | — | — | 0 |
| AS151073JP | AS-VMW-SYD - VMWare Incorporation | — | — | 0 |
| AS2503JP | AS2503-7 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS10124JP | AMAZON-AP-RESOURCES-AS-AP-NRT - Amazon Data Services Japan KK | — | — | 0 |
| AS17681JP | AS17681-9 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23640JP | BBIX - BBIX,Inc. | — | — | 0 |
| AS37921JP | AS37921-34 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS38645JP | NTTCOM-GRX - NTT DOCOMO BUSINESS, Inc. | — | — | 0 |
| AS4251JP | ERX-TWICS - TWICS Co. Ltd. | — | — | 0 |
| AS4709JP | NETLAPUTA - NetLaputa Corporation | — | — | 0 |
| AS151068JP | AS-VMW-KUL - VMWare Incorporation | — | — | 0 |
| AS23801JP | AS23801-29 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS23663JP | YAHOO-BANGALORE-AS-AP - Yahoo Bangalore Network Monitoring Center | — | — | 0 |
| AS23814JP | T-LEX - WIDE Project | — | — | 0 |
| AS55889JP | BITISLE-WEST - Equinix Japan Enterprise K.K. | — | — | 0 |
| AS131935JP | KAMOIKE-ORG - Kamoike.net LLP | — | — | 0 |
| AS131153JP | KVH-ISP - KVH Co., Ltd. | — | — | 0 |
| AS38627JP | BAIDUJP - Baidu, Inc. | — | — | 0 |
| AS131078JP | KDDLAB-4OCT - KDDI Research, Inc. | — | — | 0 |
| AS131974JP | TOCHIGIX - Cable TV Corporation | — | — | 0 |
| AS7680JP | AS7680-21 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS9377JP | AS9377-29 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS17525JP | AS17525-23 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |
| AS18132JP | AS18132-12 - JPNIC-2Byte-ASBLOCK-AP | — | — | 0 |