AS2497 IIJ - Internet Initiative Japan Inc.
🇯🇵Org handle: A91A7381
APNICallocated
Announced Prefixes (BGP)
269total
258 IPv411 IPv6
IPv4 Addresses
Allocated (RIR)2.1M
Announced (BGP)4.2M
IPv6 Addresses
Allocated (RIR)3.1×10²⁹
Announced (BGP)3.2×10²⁹
Routing hygiene
Score 21/100 · Low riskRPKI ROA coverage
60.2%
no RPKI invalid prefixes
IRR route objects
99.6%
no origin mismatches
Hijack signals
20
0 announced against others' ROAs, 20 own announced by others
Upstreams
6
diversity 45/100
- 40% of announced prefixes (107 of 269) have no valid ROA
- 20 prefixes of this ASN announced by another network against its ROAs
Based on 269 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained
Announced Prefixes
(BGP)269|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | Other IRR | 2026-10-27 | |
| Valid | Other IRR | 2026-10-27 | |
| Valid | ARINOther IRR | 2026-10-27 | |
| Valid | ARINOther IRR | 2026-10-27 | |
| Valid | ARINOther IRR | 2026-10-27 | |
43.249.241.0/24MOAS | Valid | APNICOther IRR | 2026-10-27 |
45.38.103.0/24MOAS | Valid | ARINOther IRR | 2026-10-27 |
45.38.104.0/24MOAS | Valid | ARINOther IRR | 2026-10-27 |
45.39.42.0/24MOAS | Valid | ARINOther IRR | 2026-10-27 |
45.39.47.0/24MOAS | Valid | ARINOther IRR | 2026-10-27 |
1-10 of 269
1 / 27
Allocated Prefixes
(RIR)76Prefix | Country | RIR | Status |
|---|---|---|---|
| 23.131.136.0/24 | 🇯🇵 JP | ARIN | allocated |
| 23.159.40.0/24 | 🇯🇵 JP | ARIN | allocated |
| 23.183.56.0/24 | 🇯🇵 JP | ARIN | allocated |
| 49.239.64.0/18 | 🇯🇵 JP | APNIC | allocated |
| 58.138.0.0/17 | 🇯🇵 JP | APNIC | allocated |
| 58.138.128.0/18 | 🇯🇵 JP | APNIC | allocated |
| 79.170.199.0/24 | 🇭🇰 HK | RIPENCC | allocated |
| 81.203.0.0/16 | 🇯🇵 JP | APNIC | allocated |
| 101.128.128.0/17 | 🇯🇵 JP | APNIC | allocated |
| 103.2.57.0/24 | 🇯🇵 JP | APNIC | allocated |
1-10 of 76
1 / 8
All 269 announced prefixes of AS2497 →
BGP Neighbours
(seen in AS paths)Upstreams (5)
Networks AS2497 hands its own prefixes to: transit providers, or peers at an exchange.
Downstreams (100 of 221)
Networks whose own prefixes AS2497 passes on: usually its customers.
- AS16509Amazon.Com3,192
- AS4837CHINA UNICOM China169 Backbone642
- AS2907Research Organization Of Information And Systems, National Institute Of Informatics609
- AS4134No.31,Jin Rong Street606
- AS13335Cloudflare313
- AS9605NTT DOCOMO251
- AS4694IDC Frontier214
- AS9824JCOM157
- AS2519ARTERIA Networks Corporation146
- AS41095IPTP117
- AS6327Shaw Communications109
- AS10010TOKAI Communications Corporation92
- AS137535JT TELECOM INTERNATIONAL PTE83
- AS59109Hitachi,., Managed & Platform Services Business Division65
- AS17514Otsuka61
- AS4785XTom57
- AS131965Xserver57
- AS8359MTS PJSC56
- AS54113Fastly54
- AS18071Panasonic Information Systems53
- AS3257GTT BACKBONE GTT Communications49
- AS32934Facebook48
- AS3491PCCW Global (HK)43
- AS3320DTAG Deutsche Telekom42
- AS9595NTT ME Corporation42
- AS59107Hachinohe Cable Television38
- AS7524ITEC HANKYU HANSHIN34
- AS138384Rakuten Mobile Network31
- AS131921GMO GlobalSign Holdings K.K30
- AS55900GLBB Japan KK29
- AS3786LG DACOM Corporation28
- AS4766Korea Telecom27
- AS18126Chubu Telecommunications Company27
- AS4761INDOSAT Internet Network Provider26
- AS6057Administracion Nacional De Telecomunicaciones26
- AS7676TAM26
- AS16276OVH SAS25
- AS9370SAKURA Internet23
- AS17516NTT COMWARE CORPORATION22
- AS7671NTT SmartConnect Corporation20
- AS9607BroadBand Tower20
- AS984OCTOPUS WEB SOLUTION19
- AS7687TOYOTA SYSTEMS CORPORATION19
- AS17707For DATAHOTEL, Which Is One Of IDC In Japan19
- AS3258XTOM JAPAN XTom Japan Corporation18
- AS37918NTT18
- AS2119TELENOR NORGE Telenor Norge AS17
- AS3300BT British Telecommunications Limited17
- AS714Apple16
- AS2522Japan Network Information Center15
- AS45691DODO K.K15
- AS7672Hokuden Information System Service14
- AS9371SAKURA Internet14
- AS17661NHN Cloud Japan Corporation14
- AS23783Cable Networks Akita14
- AS38628HIMEJI CABLE TELEVISION CORPORATION14
- AS45899VNPT14
- AS131899DIG14
- AS131916Tokyo Bay Network14
- AS10003Ogaki Cable Television13
- AS13445Cisco Webex13
- AS131918SHONAN CABLE NETWORK13
- AS6453TATA COMMUNICATIONS (AMERICA)12
- AS9597KDDI Web Communications12
- AS30781JAGUAR Free Pro SAS12
- AS51847NEAROUTE Limited12
- AS4680Mitsubishi Electric Information Network Corporation11
- AS6461Zayo Bandwidth11
- AS9999AT TOKYO Corporation11
- AS20940AKAMAI ASN1 Akamai International B.V11
- AS131896SSI Lab11
- AS3605Guam Cablevision10
- AS4673NTT DATA CORPORATION10
- AS9993ITOCHU Techno Solutions Corporation10
- AS9997Suzuka Cable10
- AS17931Netforest10
- AS18526DDPS Networks10
- AS24284CyberAgent10
- AS5511Opentransit Orange S.A9
- AS59123Kakaku.Com9
- AS63997Tsukaeru.Net, Web Hosting Company, Japan9
- AS7670Enecom8
- AS13030INIT7 (Switzerland)8
- AS17939Miyazaki Cabletelevision Network8
- AS17955Densan8
- AS18081Kintetsu Cable Network8
- AS24279SENDAI CATV8
- AS55899Irob8
- AS131944KADOKAWA DWANGO CORPORATION8
- AS577Bell Canada7
- AS6830LibertyGlobal Liberty Global Europe Holding B.V7
- AS7529GMO NetIRD7
- AS15557LDCOMNET Societe Francaise Du Radiotelephone SFR7
- AS24259Kanuma Cable Television Corporation7
- AS24319Akamai Technologies Tokyo ASN7
- AS26704Open Text Corporation7
- AS131925FAMILY NET JAPAN INCORPORATED7
- AS5400BT British Telecommunications Limited6
- AS9121TTNet Turk Telekomunikasyon Anonim Sirketi6
- AS9365Its Communications6
Other adjacent networks (17)
Adjacent to AS2497 in the transit part of AS paths: peers, providers or customers.
- AS6939Hurricane Electric106
- AS12956TELXIUS TELEFONICA GLOBAL SOLUTIONS SL21
- AS7342VeriSign Infrastructure & Operations14
- AS9354Community Network Center14
- AS23532IOVZ NETWORKS7
- AS17961Mitene Internet6
- AS4637Telstra Global5
- AS4651National Telecom Public Company Limited5
- AS17676SoftBank4
- AS137969HONG KONG BRIDGE INFO TECH LIMITED4
- AS4777Asia Pacific Network Information Centre2
- AS12389ROSTELECOM PJSC Rostelecom2
- AS133182Running River Network Technology Limited2
- AS140096JINX ., LIMITED2
- AS7522STNet, Incorporated1
- AS8220COLT Technology Services Group Limited1
- AS8966Etisalat EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC1
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the APNIC regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/2497Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/2497" | jq