Data as of Nov 12, 2026
151.186.158.0/24
No anonymizer space · no proxy exits in 30 daysAmazon.com, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Corporate gateway
Risk
20 / 100 · Low
Recent change
New origin Jul 2026
its first announcement on record
Operators, sellers and brokers
Corporate gateways
| Name | Parent | In 151.186.158.0/24 | /24s |
|---|---|---|---|
| Cisco Umbrella | Cisco | 256100% | 1 |
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 |
|---|---|---|---|---|---|---|
| 151.186.0.0/16 | 65,536 | OpenDNS-RIPE | Cisco Systems, Inc. (ORG-CSI15-RIPE) · US | LEGACY | Sep 2, 2021 | rir-abuse@ |
| └ 151.186.144.0/20 | 4,096 | CISCO-CIE-NATAAS-12 | unknown | LEGACY | Jun 12, 2024 | rir-abuse@ via OpenDNS-RIPE |
| └ 151.186.158.0/24 | 256 | CISCO-CIE-NATAAS-12 | unknown | LEGACY | Jun 12, 2024 | rir-abuse@ via CISCO-CIE-NATAAS-12 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Registry
Holder
- Organization
- Not stated by the registry
- Range
- 151.
186. 144. 0/ 20 - Registration type
- LEGACY
- Record created
- Jun 12, 2024
- Legacy
- yes
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
- 300
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2026
- Current origin since
- Jul 2026 · 3 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.186.158.0/24 | AS14618 | /24 | RIPE | Another network |
| 151.186.158.0/24 | AS16509 | /24 | RIPE | RPKI valid |
| 151.186.158.0/24 | AS36692 | /24 | RIPE | Another network |
| 151.186.144.0/20 | AS14618 | /24 | RIPE | Another network |
| 151.186.144.0/20 | AS16509 | /24 | RIPE | RPKI valid |
| 151.186.144.0/20 | AS36692 | /24 | RIPE | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16509 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Aug 4, 2026 |
Whois
Registration for this announcement
- Range
- 151.
186. 158. 0/ 24 - Netname
- CISCO-CIE-NATAAS-12
- Registrant country
- US
- Organization
- Not stated by the registry
- Type
- LEGACY
- Created
- Jun 12, 2024
- Updated
- Sep 18, 2026
- Maintainer
- OPENDNS-MNT
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Sep 17, 1991
- Status
- assigned
Report abuse
Abuse contact
- rir-abuse@
cisco. com - Name
- Abuse-C Role
- Handle
- AR80285-RIPE