AS4721 
JCOM Co., Ltd.
Updated 21.10.2026 20:15 UTC
AS Info
- Organization
- JCOM Co., Ltd.
- Country
- Japan
- Last seen in BGP
- 21.10.2026 20:05 UTC
RPKI
57 ROA
Valid 163
Invalid 0
No ROA 0
Prefix locations
-
Japan
163
External links
Neighbors as seen from AS208972, thicker lines carry more routes.
UpstreamsAS4721Downstreams
| # | AS | Name | Relation | Routes | Share |
|---|---|---|---|---|---|
| 1 | AS9824 | JCOM | Upstream | 163 |
None seen in the routing table.
None seen in the routing table.
| # | AS | Name | Relation | Routes | Share |
|---|---|---|---|---|---|
| 1 | AS9824 | JCOM | Upstream | 163 |
| Prefix | Description | Location | RPKI | Paths |
|---|---|---|---|---|
| 14.193.0.0/16 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 14.193.0.0/17 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 14.193.128.0/17 | JCOM Co., Ltd. | Iijimachō | RPKI valid | 1 |
| 61.203.224.0/19 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 61.203.224.0/20 | Jupiter Telecommunications Co., Ltd. | Hino | RPKI valid | 1 |
| 61.203.240.0/20 | JCOM Co., Ltd. | Akishima | RPKI valid | 1 |
| 110.4.48.0/20 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 110.4.48.0/21 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 110.4.56.0/21 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 110.92.80.0/20 | JCOM Co., Ltd. | Kamikuratachō | RPKI valid | 1 |
| 110.92.80.0/21 | JCOM Co., Ltd. | Kamikuratachō | RPKI valid | 1 |
| 110.92.88.0/21 | Jupiter Telecommunications Co., Ltd. | Akishima | RPKI valid | 1 |
| 110.93.0.0/21 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 110.93.0.0/22 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 110.93.4.0/22 | Jupiter Telecommunications Co., Ltd. | Hino | RPKI valid | 1 |
| 110.173.240.0/20 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 110.173.240.0/21 | Jupiter Telecommunications Co., Ltd. | Funabashi | RPKI valid | 1 |
| 110.173.248.0/21 | Jupiter Telecommunications Co., Ltd. | Kanazawa | RPKI valid | 1 |
| 110.232.0.0/19 | Jupiter Telecommunications Co., Ltd. | Kōnan | RPKI valid | 1 |
| 110.232.0.0/20 | JCOM Co., Ltd. | Kōnan | RPKI valid | 1 |
| 110.232.16.0/20 | Jupiter Telecommunications Co., Ltd. | Adachi | RPKI valid | 1 |
| 110.232.128.0/21 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 110.232.128.0/22 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 110.232.132.0/22 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 111.90.0.0/17 | JCOM Co., Ltd. | Matsudo | RPKI valid | 1 |
| 111.90.0.0/18 | Jupiter Telecommunications Co., Ltd. | Matsudo | RPKI valid | 1 |
| 111.90.64.0/18 | JCOM Co., Ltd. | Hachiōji | RPKI valid | 1 |
| 112.137.32.0/20 | JCOM Co., Ltd. | Nakano City | RPKI valid | 1 |
| 112.137.32.0/21 | Jupiter Telecommunications Co., Ltd. | Nakano City | RPKI valid | 1 |
| 112.137.40.0/21 | JCOM Co., Ltd. | Nakano City | RPKI valid | 1 |
| 112.137.64.0/18 | Jupiter Telecommunications Co., Ltd. | Nagareyama | RPKI valid | 1 |
| 112.137.64.0/19 | Jupiter Telecommunications Co., Ltd. | Nagareyama | RPKI valid | 1 |
| 112.137.96.0/19 | JCOM Co., Ltd. | Saiwaichō | RPKI valid | 1 |
| 113.52.16.0/20 | JCOM Co., Ltd. | Mure | RPKI valid | 1 |
| 113.52.16.0/21 | Jupiter Telecommunications Co., Ltd. | Mure | RPKI valid | 1 |
| 113.52.24.0/21 | Jupiter Telecommunications Co., Ltd. | Mure | RPKI valid | 1 |
| 113.61.112.0/20 | JCOM Co., Ltd. | | RPKI valid | 1 |
| 113.61.112.0/21 | Jupiter Telecommunications Co., Ltd. | | RPKI valid | 1 |
| 113.61.120.0/21 | JCOM Co., Ltd. | | RPKI valid | 1 |
| 114.134.112.0/20 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 114.134.112.0/21 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 114.134.120.0/21 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 114.134.192.0/18 | 1-2-1 kamiogi,Suginami-ku,Tokyo,Japan | Kawaguchi | RPKI valid | 1 |
| 114.134.192.0/19 | Jupiter Telecommunications Co., Ltd. | Kawaguchi | RPKI valid | 1 |
| 114.134.224.0/19 | Jupiter Telecommunications Co., Ltd. | Kamikuratachō | RPKI valid | 1 |
| 114.142.128.0/21 | JCOM Co., Ltd. | Saiwaichō | RPKI valid | 1 |
| 114.142.128.0/22 | Jupiter Telecommunications Co., Ltd. | Saiwaichō | RPKI valid | 1 |
| 114.142.132.0/22 | Jupiter Telecommunications Co., Ltd. | Saiwaichō | RPKI valid | 1 |
| 114.198.192.0/19 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 114.198.192.0/20 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 114.198.208.0/20 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 114.198.224.0/21 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 114.198.224.0/22 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 114.198.228.0/22 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 115.42.96.0/20 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 115.42.96.0/21 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 115.42.104.0/21 | JCOM Co., Ltd. | Adachi City | RPKI valid | 1 |
| 116.70.128.0/18 | JCOM Co., Ltd. | Matsudo | RPKI valid | 1 |
| 116.70.128.0/19 | JCOM Co., Ltd. | Matsudo | RPKI valid | 1 |
| 116.70.160.0/19 | Jupiter Telecommunications Co., Ltd. | Musashimurayama | RPKI valid | 1 |
| 118.83.0.0/16 | JCOM Co., Ltd. | Hachiōji | RPKI valid | 1 |
| 118.83.0.0/17 | Jupiter Telecommunications Co., Ltd. | Hachiōji | RPKI valid | 1 |
| 118.83.128.0/17 | JCOM Co., Ltd. | Kaminagaya | RPKI valid | 1 |
| 118.86.0.0/15 | JCOM Co., Ltd. | Katsushika | RPKI valid | 1 |
| 118.86.0.0/16 | JCOM Co., Ltd. | Katsushika | RPKI valid | 1 |
| 118.87.0.0/16 | JCOM Co., Ltd. | Kaminagaya | RPKI valid | 1 |
| 122.255.128.0/17 | Australia | Ichikawa | RPKI valid | 1 |
| 122.255.128.0/18 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 122.255.192.0/18 | Australia | Kawagoe | RPKI valid | 1 |
| 123.98.224.0/19 | 1-2-1 kamiogi,Suginami-ku,Tokyo,Japan | Shimorenjaku | RPKI valid | 1 |
| 123.98.224.0/20 | Jupiter Telecommunications Co., Ltd. | Shimorenjaku | RPKI valid | 1 |
| 123.98.240.0/20 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 175.41.64.0/18 | JCOM Co., Ltd. | Kamata | RPKI valid | 1 |
| 175.41.64.0/19 | Jupiter Telecommunications Co., Ltd. | Kamata | RPKI valid | 1 |
| 175.41.96.0/19 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 175.103.12.0/22 | JCOM Co., Ltd. | | RPKI valid | 1 |
| 175.103.12.0/23 | Jupiter Telecommunications Co., Ltd. | | RPKI valid | 1 |
| 175.103.14.0/23 | Jupiter Telecommunications Co., Ltd. | | RPKI valid | 1 |
| 180.92.32.0/19 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 180.92.32.0/20 | Jupiter Telecommunications Co., Ltd. | Funabashi | RPKI valid | 1 |
| 180.92.48.0/20 | Jupiter Telecommunications Co., Ltd. | Nishikōjiya | RPKI valid | 1 |
| 180.149.160.0/19 | Jupiter Telecommunications Co., Ltd. | Kawaguchi | RPKI valid | 1 |
| 180.149.160.0/20 | Jupiter Telecommunications Co., Ltd. | Kawaguchi | RPKI valid | 1 |
| 180.149.176.0/20 | JCOM Co., Ltd. | Kawaguchi | RPKI valid | 1 |
| 182.50.192.0/19 | JCOM Co., Ltd. | Funabashi | RPKI valid | 1 |
| 182.50.192.0/20 | Jupiter Telecommunications Co., Ltd. | Funabashi | RPKI valid | 1 |
| 182.50.208.0/20 | Jupiter Telecommunications Co., Ltd. | | RPKI valid | 1 |
| 182.50.224.0/20 | JCOM Co., Ltd. | Minamirokugō | RPKI valid | 1 |
| 182.50.224.0/21 | JCOM Co., Ltd. | Minamirokugō | RPKI valid | 1 |
| 182.50.232.0/21 | Jupiter Telecommunications Co., Ltd. | Ōta | RPKI valid | 1 |
| 202.43.16.0/20 | JCOM Co., Ltd. | Matsudo | RPKI valid | 1 |
| 202.43.16.0/21 | Jupiter Telecommunications Co., Ltd. | Matsudo | RPKI valid | 1 |
| 202.43.24.0/21 | Jupiter Telecommunications Co., Ltd. | Kamakura | RPKI valid | 1 |
| 202.43.68.0/22 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 202.43.68.0/23 | Jupiter Telecommunications Co., Ltd. | Odawara | RPKI valid | 1 |
| 202.43.70.0/23 | JCOM Co., Ltd. | Odawara | RPKI valid | 1 |
| 202.72.64.0/20 | JCOM Co., Ltd. | Noda | RPKI valid | 1 |
| 202.72.64.0/21 | JCOM Co., Ltd. | Noda | RPKI valid | 1 |
| 202.72.72.0/21 | JCOM Co., Ltd. | Noda | RPKI valid | 1 |
| 202.78.176.0/20 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 202.78.176.0/21 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 202.78.184.0/21 | Jupiter Telecommunications Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 202.83.184.0/21 | JCOM Co., Ltd. | Sōka Shi | RPKI valid | 1 |
| 202.83.184.0/22 | JCOM Co., Ltd. | Sōka Shi | RPKI valid | 1 |
| 202.83.188.0/22 | JCOM Co., Ltd. | Sōka Shi | RPKI valid | 1 |
| 202.178.80.0/20 | JCOM Co., Ltd. | Yokohama | RPKI valid | 1 |
| 202.178.80.0/21 | Jupiter Telecommunications Co., Ltd. | Yokohama | RPKI valid | 1 |
| 202.178.88.0/21 | JCOM Co., Ltd. | Yokohama | RPKI valid | 1 |
| 203.89.32.0/19 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 203.89.32.0/20 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 203.89.48.0/20 | JCOM Co., Ltd. | Yokohama | RPKI valid | 1 |
| 203.114.248.0/22 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.114.248.0/23 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.114.250.0/23 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.124.64.0/19 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.124.64.0/20 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.124.80.0/20 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 203.153.56.0/22 | Jupiter Telecommunications Co., Ltd. | Gumizawa | RPKI valid | 1 |
| 203.153.56.0/23 | Jupiter Telecommunications Co., Ltd. | Gumizawa | RPKI valid | 1 |
| 203.153.58.0/23 | JCOM Co., Ltd. | Gumizawa | RPKI valid | 1 |
| 210.135.192.0/19 | Japan Network Information Center | Musashino | RPKI valid | 1 |
| 210.135.192.0/20 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 210.135.208.0/20 | Japan Network Information Center | Adachi | RPKI valid | 1 |
| 210.172.240.0/20 | JCOM Co., Ltd. | Kōnan | RPKI valid | 1 |
| 210.172.240.0/21 | Jupiter Telecommunications Co., Ltd. | Kōnan | RPKI valid | 1 |
| 210.172.248.0/21 | JCOM Co., Ltd. | Kōnan | RPKI valid | 1 |
| 211.19.208.0/20 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 211.19.208.0/21 | JCOM Co., Ltd. | Musashino | RPKI valid | 1 |
| 211.19.216.0/21 | Jupiter Telecommunications Co., Ltd. | Musashino | RPKI valid | 1 |
| 218.219.80.0/20 | Japan Network Information Center | Ichikawa | RPKI valid | 1 |
| 218.219.80.0/21 | Japan Network Information Center | Ichikawa | RPKI valid | 1 |
| 218.219.88.0/21 | JCOM Co., Ltd. | Ichikawa | RPKI valid | 1 |
| 219.112.192.0/19 | JCOM Co., Ltd. | Nakajūjō | RPKI valid | 1 |
| 219.112.192.0/20 | Jupiter Telecommunications Co., Ltd. | Nakajūjō | RPKI valid | 1 |
| 219.112.208.0/20 | Jupiter Telecommunications Co., Ltd. | Hino | RPKI valid | 1 |
| 219.113.96.0/20 | JCOM Co., Ltd. | | RPKI valid | 1 |
| 219.113.96.0/21 | JCOM Co., Ltd. | | RPKI valid | 1 |
| 219.113.104.0/21 | Jupiter Telecommunications Co., Ltd. | | RPKI valid | 1 |
| 219.117.0.0/20 | JCOM Co., Ltd. | Mure | RPKI valid | 1 |
| 219.117.0.0/21 | Jupiter Telecommunications Co., Ltd. | Mure | RPKI valid | 1 |
| 219.117.8.0/21 | Jupiter Telecommunications Co., Ltd. | Mure | RPKI valid | 1 |
| 219.117.160.0/19 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 219.117.160.0/20 | Jupiter Telecommunications Co., Ltd. | Hino | RPKI valid | 1 |
| 219.117.176.0/20 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 219.124.224.0/19 | JCOM Co., Ltd. | Hyakuninchō | RPKI valid | 1 |
| 219.124.224.0/20 | Jupiter Telecommunications Co., Ltd. | Hyakuninchō | RPKI valid | 1 |
| 219.124.240.0/20 | JCOM Co., Ltd. | Kōnan | RPKI valid | 1 |
| 220.208.64.0/18 | JCOM Co., Ltd. | Matsudo | RPKI valid | 1 |
| 220.208.64.0/19 | Jupiter Telecommunications Co., Ltd. | Matsudo | RPKI valid | 1 |
| 220.208.96.0/19 | JCOM Co., Ltd. | Hino | RPKI valid | 1 |
| 221.132.128.0/18 | JCOM Co., Ltd. | Yokohama | RPKI valid | 1 |
| 221.132.128.0/19 | Jupiter Telecommunications Co., Ltd. | Yokohama | RPKI valid | 1 |
| 221.132.160.0/19 | Jupiter Telecommunications Co., Ltd. | Yokohama | RPKI valid | 1 |
| 223.165.20.0/22 | JCOM Co., Ltd. | Tokyo | RPKI valid | 1 |
| 223.165.20.0/23 | JCOM Co., Ltd. | Tokyo | RPKI valid | 1 |
| 223.165.22.0/23 | Jupiter Telecommunications Co., Ltd. | Tokyo | RPKI valid | 1 |
| 223.165.32.0/19 | Jupiter Telecommunications Co., Ltd. | Kamakura | RPKI valid | 1 |
| 223.165.32.0/20 | Jupiter Telecommunications Co., Ltd. | Kamakura | RPKI valid | 1 |
| 223.165.48.0/20 | Jupiter Telecommunications Co., Ltd. | Kamakura | RPKI valid | 1 |
| 223.223.208.0/21 | Jupiter Telecommunications Co., Ltd. | Tachikawa | RPKI valid | 1 |
| 223.223.208.0/22 | Jupiter Telecommunications Co., Ltd. | Tachikawa | RPKI valid | 1 |
| 223.223.212.0/22 | JCOM Co., Ltd. | Chiba | RPKI valid | 1 |
| Prefix | Description | Location | RPKI | Paths |
|---|---|---|---|---|
| 2001:c30::/32 | | RPKI valid | 1 |