Data as of Nov 5, 2026
163.129.129.0/24
No anonymizer space · no proxy exits in 30 daysAmazon.com, Inc. · space held by Cisco Webex 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 |
|---|---|---|---|---|---|---|
| 163.129.0.0/16 | 65,536 | WEX | Cisco Webex LLC (WEX) · US | Direct Allocation | Jan 11, 2022 | csg-network@ |
| └ 163.129.128.0/17 | 32,768 | UMB-163-129-128-0-17 | Cisco OpenDNS, LLC (OPEND-2) · US | Reassigned | May 23, 2024 | rir-abuse@ |
Network & registry
Registry
Holder
- Organization
- Cisco Webex LLC
- Handle
- WEX
- Range
- 163.
129. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Jan 11, 2022
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
- Aug 2025
- Current origin since
- Aug 2025 · 1.3 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 163.129.128.0/20 | AS14618 | /24 | ARIN | Another network |
| 163.129.128.0/20 | AS16509 | /24 | ARIN | RPKI valid |
| 163.129.128.0/20 | AS36692 | /24 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16509 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Aug 5, 2025 |
Whois
Registration for this announcement
- Range
- 163.
129. 128. 0/ 17 - Netname
- UMB-163-129-128-0-17
- Registrant
- Cisco OpenDNS, LLC
- Organization
- Cisco OpenDNS, LLC (OPEND-2)
- Org address
- 170 West Tasman Drive, San Jose, CA, 95134
- Org country
- US
- Type
- Reassigned
- Handle
- NET-163-129-128-0-1
- Parent
- NET-163-129-0-0-1
- Created
- May 23, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 11, 2022
- Status
- assigned
Report abuse
Abuse contact
- rir-abuse@
cisco. com - Name
- Cisco Cloud Security Network Abuse
- Phone
- +1-408-525-0560
- Handle
- CCSNA1-ARIN