202.43.16.0/20 - JCOM (AS4721)
CIDR
202.43.16.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇯🇵 Japan
City
Chiyoda City
RIR
APNIC
Status
allocated
Allocated
2004-01-07
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 202.43.16.0/20 | AS4721 JCN - JCOM Co., Ltd. | Valid | Other IRR | 2026-10-11 |
More-Specific Announcements
2 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 202.43.16.0/21 | AS4721 JCN - JCOM Co., Ltd. | Valid | - | 2026-10-11 |
| 202.43.24.0/21 | AS4721 JCN - JCOM Co., Ltd. | Valid | - | 2026-10-11 |
Origin ASN
AS4721
JCN - JCOM Co., Ltd.
Related Prefixes
Geolocation
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the APNIC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/202.43.16.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/202.43.16.0/20" | jq
External Links