Data as of Nov 8, 2026
216.183.73.0/24
No anonymizer space · no proxy exits in 30 daysAmazon.com, Inc. · space held by Clearwater Analytics, LLC
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 216.183.72.0/21 | 2,048 | CAL-234 | Clearwater Analytics, LLC (CAL-234) · US | Direct Allocation | Sep 22, 2025 | arin@ |
| └ 216.183.72.0/22 | 1,024 | CWAN-ARIN-01-AWS | Clearwater Analytics, LLC (CAL-234) · US | Reallocated | Oct 30, 2025 | arin@ |
| └ 216.183.73.0/24 | 256 | AWS-US-EAST-2 | Clearwater Analytics, LLC (CAL-234) · US | Reassigned | Oct 30, 2025 | arin@ |
Network & registry
Registry
Holder
- Organization
- Clearwater Analytics, LLC
- Handle
- CAL-234
- Range
- 216.
183. 72. 0/ 21 - Registration type
- Direct Allocation
- Record created
- Sep 22, 2025
Origin network
AS16509
US
- Name
- Amazon.com, Inc.
- Type
- Hosting
- Registered
- May 4, 2000
- Domain
- amazon.com
- Website
- www.amazon.com
- Industry
- Hosting and Cloud Provider
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 294
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2026
- Current origin since
- Feb 2026 · 9 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 216.183.72.0/22 | AS14618 | /24 | ARIN | Another network |
| 216.183.72.0/22 | AS16509 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16509 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Oct 31, 2025 |
Whois
Registration for this announcement
- Range
- 216.
183. 73. 0/ 24 - Netname
- AWS-US-EAST-2
- Registrant
- Clearwater Analytics, LLC
- Organization
- Clearwater Analytics, LLC (CAL-234)
- Org address
- 777 W Main St Suite 900, Boise, ID, 83702
- Org country
- US
- Type
- Reassigned
- Handle
- NET-216-183-73-0-1
- Parent
- NET-216-183-72-0-2
- Created
- Oct 30, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 22, 2025
- Status
- assigned
Report abuse
Abuse contact
- arin@
clearwateranalytics. com - Name
- Network Administrator
- Phone
- +1-208-433-1200
- Handle
- NETWO8693-ARIN