103.37.88.0/21
🇯🇵IPv4RIPEassignedNo ROA
CIDR
103.37.88.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
RIPE
Status
assigned
Allocated
-
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not currently announced in BGP. See covering prefix below. | ||||
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 103.37.92.0/22 | AS2519VECTANT - ARTERIA Networks Corporation | No ROA | — | 5/31/2026 |
| 103.37.90.0/24 | AS32787PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc. | No ROA | — | 5/31/2026 |
| 103.37.88.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 5/31/2026 |
| 103.37.89.0/24 | AS45691DODO-CORE - DODO K.K. | Valid | — | 5/31/2026 |
| 103.37.91.0/24 | AS150415LOPL-AS-AP - L&K OPERATIONS PTY LTD | No ROA | — | 5/31/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 103.37.92.0/22 | AS2519 | 🇯🇵JP | allocated |
| 103.37.88.0/23 | 🇯🇵JP | allocated | |
| 103.37.90.0/23 | 🇦🇺AU | assigned | |
| 103.37.93.0/24 | 🇯🇵JP | assigned | |
| 103.37.92.0/24 | 🇯🇵JP | assigned | |
| 103.37.95.0/24 | 🇯🇵JP | assigned | |
| 103.37.94.0/24 | 🇯🇵JP | assigned | |
| 103.37.92.128/25 | 🇨🇳CN | assigned | |
| 103.37.93.128/26 | 🇯🇵JP | assigned | |
| 103.37.93.0/26 | 🇯🇵JP | assigned | |
| 103.37.93.192/26 | 🇯🇵JP | assigned | |
| 103.37.95.112/28 | 🇯🇵JP | assigned | |
| 103.37.95.16/28 | 🇯🇵JP | assigned | |
| 103.37.95.32/28 | 🇯🇵JP | assigned | |
| 103.37.95.48/28 | 🇯🇵JP | assigned | |
| 103.37.95.64/28 | 🇯🇵JP | assigned | |
| 103.37.95.240/28 | 🇯🇵JP | assigned | |
| 103.37.95.96/28 | 🇯🇵JP | assigned | |
| 103.37.95.80/28 | 🇯🇵JP | assigned |
Geolocation
API
Open https://api.ipctl.io/v1/prefix/103.37.88.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/103.37.88.0/21" | jq
External Links