Data as of Nov 4, 2026
151.186.175.0/24
4 residential-proxy exits · 30 daysAmazon.com, Inc. · space held by Cisco Systems, Inc.
Residential-proxy exits
Proxy exits
4
1.6% of its addresses · 30 days
Oct 5, 2026 – Nov 3, 2026
Exits seen per day
485 observations
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@ |
| └ 151.186.172.0/22 | 1,024 | CISCO-CIE-NATAAS-1 | unknown | LEGACY | Sep 20, 2023 | rir-abuse@ |
Network & registry
Registry
Holder
- Organization
- Cisco Systems, Inc.
- Handle
- ORG-CSI15-RIPE
- Range
- 151.
186. 0. 0/ 16 - Registration type
- LEGACY
- Record created
- Sep 2, 2021
- 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
- 294
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Oct 2023
- Current origin since
- Oct 2023 · 3.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 151.186.175.0/24 | AS14618 | /24 | RIPE | Another network |
| 151.186.175.0/24 | AS16509 | /24 | RIPE | RPKI valid |
| 151.186.175.0/24 | AS36692 | /24 | RIPE | Another network |
| 151.186.172.0/22 | AS14618 | /24 | RIPE | Another network |
| 151.186.172.0/22 | AS16509 | /24 | RIPE | RPKI valid |
| 151.186.172.0/22 | AS36692 | /24 | RIPE | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16509 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 151.
186. 172. 0/ 22 - Netname
- CISCO-CIE-NATAAS-1
- Registrant country
- US
- Organization
- Not stated by the registry
- Type
- LEGACY
- Created
- Sep 20, 2023
- Updated
- Aug 27, 2025
- Maintainer
- OPENDNS-MNT
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Sep 17, 1991
- Status
- assigned
Report abuse
Abuse contact
- rir-abuse@
cisco. com - Name
- OpenDNS NetEng team abuse-c
- Handle
- ODNS65-RIPE