51.203.0.0/16 - Amazon.Com (AS16509)
CIDR
51.203.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPE NCC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
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| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 51.203.0.0/16 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | Other IRR | 2026-10-17 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 51.202.0.0/15 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-17 |
Origin ASN
AS16509
AMAZON-02 - Amazon.com, Inc.
Related Prefixes
More prefixes of AS16509
All prefixes of AS16509 →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 RIPE NCC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/51.203.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/51.203.0.0/16" | jq
External Links