Data as of Nov 8, 2026
51.201.0.0/16
No anonymizer space · no proxy exits in 30 daysAmazon.com, Inc. · space held by A100 ROW Inc
Announcement
this exact prefix
RPKI valid
Announced by
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin May 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 51.200.0.0/15 since May 2026 | AS16509 | Hosting | A100 ROW Inc |
Network & registry
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2026
- Current origin since
- May 2026 · 6 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 51.201.0.0/16 | AS16509 | /16 | RIPE | RPKI valid |
| 51.200.0.0/15 | AS14618 | /15 | RIPE | Another network |
| 51.200.0.0/15 | AS16509 | /15 | RIPE | Too specific |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS16509 | RADB | Amazon EC2 Prefix | MAINT-AS16509 | May 21, 2026 |
Whois
Registration for this announcement
- Range
- 51.
200. 0. 0 - 51. 209. 255. 255 - Netname
- US-A100ROW-19930901
- Registrant
- A100 ROW Inc
- Registrant country
- US
- Organization
- A100 ROW Inc (ORG-ARI3-RIPE)
- Org country
- US
- Type
- ALLOCATED PA
- Created
- Apr 20, 2026
- Updated
- Apr 20, 2026
- Maintainer
- MNT-ADSI
- RIR
- RIPE NCC
- Country
- US
- Delegated
- Sep 1, 1993
- Status
- assigned
Report abuse
Abuse contact
- trustandsafety@
support. aws. com - Name
- Amazon Web Services Abuse
- Handle
- AWSA3-RIPE