AS2497 — IIJ Internet Initiative Japan Inc.

AS2497 announces 209 IPv4 prefixes covering 4,082,176 addresses and 7 IPv6 prefixes.

About this network

IIJ is Internet Initiative Japan Inc., one of Japan's oldest and largest internet service providers and transit networks, headquartered in Tokyo.

What it's used for

• Commercial internet transit, connectivity, and cloud/network services for businesses across Japan and beyond.

Notable

• A large commercial ISP and transit backbone, announcing several million IPv4 addresses.

Interesting

• IIJ was founded in 1992 and is widely regarded as Japan's first commercial internet provider; the low AS number reflects that early start.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 14.137.235.0/24
• 14.137.243.0/24
• 23.131.136.0/24
• 23.159.40.0/24
• 23.183.56.0/24
• 45.38.103.0/24
• 45.38.104.0/24
• 45.39.42.0/24
• 45.39.47.0/24
• 45.39.102.0/24
• 45.39.159.0/24
• 45.39.227.0/24
• 49.239.64.0/18
• 58.138.0.0/17
• 58.138.128.0/18
• 61.122.224.0/20
• 61.124.0.0/19
• 61.211.96.0/19
• 79.170.199.0/24
• 80.47.64.0/20
• 81.203.0.0/16
• 89.30.176.0/23
• 101.128.128.0/17
• 103.2.57.0/24
• 103.2.58.0/23
• 103.5.23.0/24
• 103.26.166.0/23
• 103.76.87.0/24
• 103.140.136.0/23
• 104.164.85.0/24
• 104.164.92.0/24
• 104.164.100.0/24
• 104.164.132.0/23
• 104.165.87.0/24
• 104.165.174.0/24
• 104.165.181.0/24
• 104.165.202.0/24
• 104.165.254.0/24
• 104.252.22.0/24
• 104.252.84.0/22
• 104.252.125.0/24
• 104.252.126.0/24
• 104.252.132.0/24
• 104.253.94.0/24
• 104.253.98.0/24
• 104.253.239.0/24
• 109.66.30.0/23
• 113.197.128.0/17
• 116.118.192.0/20
• 118.151.0.0/17
• 118.151.128.0/18
• 119.10.192.0/18
• 121.50.160.0/21
• 121.102.0.0/16
• 121.200.200.0/21
• 124.41.0.0/17
• 124.41.128.0/18
• 124.147.64.0/18
• 125.30.0.0/16
• 129.249.0.0/16
• 131.248.0.0/16
• 132.179.0.0/16
• 133.110.0.0/15
• 133.127.0.0/16
• 133.137.0.0/16
• 133.142.0.0/16
• 133.157.32.0/19
• 133.157.72.0/21
• 133.157.80.0/20
• 133.157.96.0/21
• 133.159.0.0/16
• 133.169.0.0/21
• 133.169.8.0/22
• 133.173.0.0/16
• 133.183.96.0/21
• 133.183.106.0/24
• 133.183.128.0/19
• 133.194.0.0/17
• 133.194.128.0/18
• 133.194.192.0/19
• 133.194.224.0/20
• 133.194.240.0/21
• 133.194.248.0/22
• 133.194.252.0/23
• 133.194.254.0/24
• 133.215.0.0/16
• 133.218.0.0/16
• 133.221.0.0/16
• 133.236.0.0/16
• 133.238.8.0/21
• 133.238.16.0/20
• 133.238.32.0/19
• 133.238.128.0/17
• 133.245.0.0/16
• 133.254.0.0/16
• 134.237.0.0/16
• 138.107.0.0/16
• 139.152.0.0/16
• 142.252.252.0/22
• 143.94.0.0/16

and 116 more.

Upstream networks

• AS1299 Arelion Sweden AB
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS5511 Orange S.A.
• AS3257 GTT Communications Inc.
• AS577 Bell Canada
• AS7018 AT&T Enterprises, LLC
• AS1273 IDDQD-AS
• AS3303 Swisscom (Schweiz) AG
• AS1257 Tele2 Sverige AB
• AS4637 Telstra Global
• AS293 ESnet
• AS11164 Internet2
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS20485 Joint Stock Company TransTeleCom
• AS37100 SEACOM Limited
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS13030 Init7 (Switzerland) Ltd.
• AS701 Verizon Business
• AS6830 Liberty Global Europe Holding B.V.
• AS3491 PCCW Global (HK) Ltd.
• AS15412 Flag Telecom UK Limited

Downstream networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS9605 NTT DOCOMO, INC.
• AS4694 IDC Frontier Inc.
• AS16509 Amazon.com, Inc.
• AS9824 JCOM Co., Ltd.
• AS9498 BHARTI Airtel Ltd.
• AS59109 Hitachi,Ltd., Managed & Platform Services Business Division
• AS6327 Shaw Communications
• AS17514 Otsuka Corp.
• AS7713 PT Telekomunikasi Indonesia
• AS131921 GMO GlobalSign Holdings K.K.
• AS45899 VNPT Corp
• AS12389 PJSC Rostelecom
• AS18071 Panasonic Information Systems Co., Ltd
• AS7671 NTT SmartConnect Corporation
• AS6079 RCN
• AS137535 JT TELECOM INTERNATIONAL PTE.LTD.
• AS7524 ITEC HANKYU HANSHIN CO.,LTD.
• AS174 Cogent Communications, LLC
• AS4766 Korea Telecom
• AS13335 Cloudflare, Inc.
• AS3257 GTT Communications Inc.
• AS577 Bell Canada
• AS2914 NTT America, Inc.
• AS59107 Hachinohe Cable Television Co.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS3257 GTT Communications Inc.
• AS1299 Arelion Sweden AB
• AS6453 TATA COMMUNICATIONS (AMERICA) INC
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS3491 PCCW Global (HK) Ltd.
• AS2907 Research Organization of Information and Systems, National Institute of Informatics
• AS5511 Orange S.A.
• AS58453 China Mobile International Limited
• AS701 Verizon Business
• AS9498 BHARTI Airtel Ltd.
• AS4134 No.31,Jin-rong Street
• AS12389 PJSC Rostelecom
• AS4837 CHINA UNICOM China169 Backbone
• AS9824 JCOM Co., Ltd.
• AS12956 TELEFONICA GLOBAL SOLUTIONS SL
• AS7018 AT&T Enterprises, LLC
• AS577 Bell Canada
• AS9605 NTT DOCOMO, INC.
• AS1273 IDDQD-AS
• AS16509 Amazon.com, Inc.
• AS4637 Telstra Global
• AS4694 IDC Frontier Inc.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• LINX LON1 — London, United Kingdom
• Equinix Internet Exchange Singapore — Singapore, Singapore
• Equinix Internet Exchange Ashburn — Ashburn, United States
• Seattle Internet Exchange — Seattle, United States
• Hong Kong Internet Exchange — Hong Kong, China
• Singapore Internet Exchange — Singapore, Singapore
• Equinix Internet Exchange Hong Kong — Hong Kong, China
• New York International Internet Exchange — New York, United States
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Equinix Internet Exchange New York — New York, United States
• Equinix Internet Exchange Los Angeles — Los Angeles, United States
• Equinix Internet Exchange Palo Alto — Palo Alto, United States
• Equinix Los Angeles IBX — Los Angeles, United States
• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan