AS9824 JCOM Co., Ltd.
IPv4 addresses
4,745,216
IPv6 /48 networks
589,824
RPKI
297 valid0 no ROA
Peers and downstreams
27
Holder
- AS name
- JTCL-JP-AS
- Description
- JCOM Co., Ltd.
- Organisation
- JCOM Co., Ltd.
- Abuse contact
- Not published
- Assigned
- 2000-01-11
- Registered
- 2008-09-04
- Record last changed
- 2021-10-18 23:16 UTC
110.128.0.0/13110.128.0.0/16110.128.0.0/17110.128.128.0/17110.129.0.0/16110.129.128.0/18110.129.192.0/18110.130.0.0/16110.131.0.0/16110.132.0.0/16110.133.0.0/17110.133.128.0/17110.134.0.0/16110.134.0.0/18110.134.64.0/18110.135.0.0/16110.135.128.0/18110.135.192.0/18116.214.16.0/21116.220.0.0/16116.220.0.0/17116.220.128.0/17116.221.0.0/16116.221.0.0/17116.221.128.0/17116.222.0.0/16116.222.0.0/17116.222.0.0/18116.222.128.0/17116.222.128.0/18116.222.192.0/18116.222.64.0/18116.223.0.0/16116.223.0.0/17116.223.128.0/17116.64.0.0/16116.64.0.0/17116.64.128.0/17116.65.0.0/16116.65.0.0/17116.65.128.0/17119.168.0.0/16119.168.0.0/17119.168.128.0/17119.169.0.0/16119.169.0.0/18119.169.128.0/17119.169.128.0/18119.169.64.0/18119.170.0.0/16119.170.0.0/17119.170.0.0/18119.170.128.0/17119.170.128.0/18119.170.192.0/18119.170.64.0/18119.171.0.0/16119.171.0.0/17119.171.128.0/17119.172.0.0/16119.172.0.0/17119.172.0.0/18119.172.128.0/17119.173.0.0/16119.173.0.0/17119.173.128.0/17119.174.0.0/16119.174.0.0/17119.174.128.0/17119.174.128.0/18119.175.0.0/16119.175.0.0/17119.175.0.0/18119.175.128.0/17119.175.64.0/18124.140.0.0/16124.140.0.0/17124.140.128.0/17124.141.0.0/16124.141.0.0/17124.141.128.0/17124.142.0.0/16124.142.0.0/17124.142.128.0/17124.143.0.0/16124.143.0.0/17124.143.128.0/17124.144.0.0/16124.144.0.0/17124.144.128.0/17124.145.0.0/16124.145.0.0/17124.145.0.0/18124.145.128.0/17124.145.128.0/18124.145.192.0/18124.145.64.0/18125.10.0.0/16125.10.0.0/17125.10.128.0/17125.11.0.0/16125.11.0.0/17125.11.0.0/18125.11.128.0/17125.11.128.0/18125.11.192.0/18125.11.64.0/18125.12.0.0/16125.12.0.0/17125.12.128.0/17125.13.0.0/16125.13.0.0/17125.13.0.0/18125.13.128.0/17125.13.128.0/18125.13.192.0/18125.13.64.0/18125.14.0.0/16125.14.0.0/17125.14.128.0/17125.15.0.0/16125.15.0.0/17125.15.128.0/17125.8.0.0/16125.8.0.0/17125.8.0.0/18125.8.128.0/17125.8.128.0/18125.8.192.0/18125.8.64.0/18125.9.0.0/16125.9.0.0/17125.9.0.0/18125.9.128.0/17125.9.128.0/18125.9.192.0/18125.9.64.0/18203.165.0.0/16203.165.0.0/17203.165.128.0/17210.194.0.0/16210.194.0.0/17210.194.128.0/17210.20.0.0/16210.20.0.0/17210.20.128.0/17220.152.0.0/18220.152.64.0/1927.136.0.0/1327.136.0.0/1727.136.128.0/1727.137.0.0/1627.138.0.0/1627.139.0.0/1627.140.0.0/1627.141.0.0/1627.142.0.0/1727.142.128.0/1727.143.0.0/1642.144.0.0/1342.144.0.0/1642.145.0.0/1642.146.0.0/1642.147.0.0/1642.148.0.0/1642.149.0.0/1642.149.0.0/1742.149.128.0/1742.150.0.0/1642.150.0.0/1842.150.128.0/1842.150.192.0/1842.150.64.0/1842.151.0.0/1659.166.0.0/1659.166.0.0/1759.166.128.0/1759.168.0.0/1659.168.0.0/1759.168.128.0/1759.169.0.0/1659.169.0.0/1859.169.128.0/1759.169.64.0/1859.170.0.0/1659.170.0.0/1759.170.0.0/1859.170.128.0/1759.170.128.0/1859.170.192.0/1859.170.64.0/1859.171.0.0/1659.171.0.0/1759.171.128.0/1760.58.0.0/1660.58.0.0/1760.58.128.0/1760.59.0.0/1660.59.0.0/1760.59.128.0/1760.60.0.0/1660.60.0.0/1760.60.128.0/1760.61.0.0/1660.61.0.0/1760.61.128.0/1760.62.0.0/1660.62.0.0/1760.62.128.0/1761.21.0.0/1661.21.0.0/1761.21.128.0/1761.22.0.0/1661.22.0.0/1761.22.0.0/1861.22.128.0/1761.22.128.0/1861.22.192.0/1861.22.64.0/1861.23.0.0/1661.23.0.0/1761.23.128.0/1761.24.0.0/1661.24.0.0/1761.24.128.0/1761.25.0.0/1661.25.0.0/1761.25.128.0/1761.26.0.0/1661.26.0.0/1761.26.128.0/1761.27.0.0/1661.27.0.0/1761.27.128.0/1761.27.192.0/18
2001:ff0::/322001:ff0::/372001:ff0:1000::/372001:ff0:1800::/372001:ff0:2000::/372001:ff0:2800::/372001:ff0:3000::/372001:ff0:3800::/372001:ff0:4000::/372001:ff0:4800::/372001:ff0:5000::/372001:ff0:5800::/372001:ff0:6000::/372001:ff0:6800::/372001:ff0:7000::/372001:ff0:7800::/372001:ff0:800::/372001:ff0:8000::/372001:ff0:8800::/372001:ff0:9000::/372001:ff0:9800::/372001:ff0:a000::/372001:ff0:a800::/372001:ff0:b000::/372001:ff0:b800::/372001:ff0:c000::/372001:ff0:c800::/372001:ff0:d000::/372001:ff0:d800::/372001:ff0:e000::/372001:ff0:e800::/372001:ff0:f000::/372001:ff0:f800::/372405:1200::/292405:1200::/342405:1200:4000::/342405:1200:8000::/342405:1200:c000::/342405:1201::/342405:1201:4000::/342405:1201:8000::/342405:1201:c000::/342405:1202::/342405:1202:4000::/342405:1202:8000::/342405:1202:c000::/342405:1203::/342405:1203:4000::/342405:1203:8000::/342405:1203:c000::/342405:1204::/342405:1204:4000::/342405:1204:8000::/342405:1204:c000::/342405:1205::/342405:1205:4000::/342405:1205:8000::/342405:1205:c000::/342405:1206::/342405:1206:4000::/342405:1206:8000::/342405:1206:c000::/34
| AS4721 | JCOM Co., Ltd. JCN |
| AS7524 | ITEC HANKYU HANSHIN CO.,LTD. HANSHIN |
| AS7686 | JCOM Co., Ltd. ATNETHOME |
| AS9351 | ZTV CO.,LTD ZLAN |
| AS9378 | JCOM Co., Ltd. CABLENET |
| AS9614 | JCOM Marketing Co.,Ltd. OCT |
| AS9617 | JCOM Co., Ltd. ZAQ |
| AS17534 | NSK Co.,Ltd. NSK |
| AS17961 | mitene internet co., ltd. MITENE |
| AS18134 | JCOM Co., Ltd. KITANET |
| AS18136 | JCOM Co., Ltd. CTA |
| AS18283 | Chupicom Inc. CCV |
| AS23635 | CRCCMedia Co.,ltd CRCC |
| AS23788 | JCOM Co., Ltd. HICT |
| AS23790 | JCOM Co., Ltd. KCN-TV |
| AS23808 | TOSHIMA CABLE NETWORK CO.,LTD TOSHIMA-NET |
| AS24255 | Koshinomiyako Network, Inc. T-CATV |
| AS24276 | JCOM Co., Ltd. ICNET |
| AS24290 | Heart Network Co.,LTD HEARTNET |
| AS45675 | JCOM Co., Ltd. KMN-TOKYO |
| AS45690 | Nihon Central TV Co.,Inc. JCTV-NET |
| AS131937 | Jcv JCV |
Upstream graph
Upstreams and their upstreams, from BGP pathsNetwork health
Grade B · 85/100| pass | Prefixes covered by valid ROAs 297 of 297 announced prefixes are RPKI valid. |
25/25 |
| pass | No RPKI invalid announcements None of the announcements is RPKI invalid. |
10/10 |
| pass | Announces IPv6 62 IPv6 prefixes. |
15/15 |
| pass | More than one upstream 4 upstreams seen in BGP. |
10/10 |
| pass | Working abuse contact abuse@home.ne.jp is published. |
15/15 |
| fail | Publishes a geofeed No geofeed found. Without one, location databases have to guess. |
0/10 |
| pass | No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger. |
10/10 |
| fail | Registry record maintained Last changed 2021-10-18. |
0/5 |
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Routing changes
Last 30 days| 2026-10-05 15:24 UTC | New neighbour | AS131937 | downstream |
| 2026-10-05 15:24 UTC | Relationship changed | AS9002 | upstream to peer |
| 2026-10-05 15:24 UTC | Relationship changed | AS8220 | upstream to peer |
| 2026-10-05 15:24 UTC | Relationship changed | AS60068 | upstream to peer |
| 2026-10-05 15:24 UTC | Relationship changed | AS2518 | upstream to peer |
WHOIS
aut-num: AS9824 as-name: JTCL-JP-AS handle: AS9824 remarks: JCOM Co., Ltd. abuse: IRT-JTCL-JP (IRT-JTCL-JP) <abuse@home.ne.jp> registrant: ORG-JTCL1-AP (JCOM Co., Ltd.) <abuse@home.ne.jp> technical,administrative:JTCL2-AP (Jupiter Telecommunication Co Ltd administrator) <abuse@home.ne.jp> registration: 2008-09-04T06:40:30Z last changed: 2021-10-18T23:16:54Z source: APNIC (RDAP)