203.100.224.0/19 - Telstra Limited (AS1221)
CIDR
203.100.224.0/19
IP Version
IPv4
Addresses
8.1K
Mask
/19 (255.255.224.0)
Country
🇦🇺 Australia
City
Sydney
RIR
APNIC
Status
allocated
Allocated
1998-02-25
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.100.224.0/19 | AS1221 ASN-TELSTRA - Telstra Limited | Valid | APNIC | 2026-10-12 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 203.100.224.0/19 | AS1221 | /19 | apnic |
More Specific Prefixes
Transfer History
Registry transfers of 203.100.224.0/19, blocks inside it, or blocks containing it.
- 203.100.224.0/19Transfer ·
Origin ASN
AS1221
ASN-TELSTRA - Telstra Limited
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/203.100.224.0/19Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.100.224.0/19" | jq
External Links