166.117.128.0/20 - Amazon.Com (AS16509)
CIDR
166.117.128.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇺🇸 United States
City
Seattle
RIR
ARIN
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 166.117.128.0/20 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-11 |
Covering Prefix
1 less-specific announcement| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 166.117.0.0/16 | AS16509 AMAZON-02 - Amazon.com, Inc. | Valid | - | 2026-10-11 |
Transfer History
Registry transfers of 166.117.128.0/20, blocks inside it, or blocks containing it.
- 166.117.0.0/16Transfer ·
- 166.117.0.0/16M&A ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 166.117.0.0/16 | Transfer | |||
| 166.117.0.0/16 | M&A |
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 ARIN regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/166.117.128.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/166.117.128.0/20" | jq
External Links