Data as of Nov 8, 2026
51.0.64.0/18
No anonymizer space · no proxy exits in 30 daysAmazon.com, Inc. · space held by A100 ROW Inc
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 |
|---|---|---|---|---|---|---|
| 51. | 24,576 | US-A100ROW-199300901 | A100 ROW Inc (ORG-ARI3-RIPE) · US | ALLOCATED PA | Nov 11, 2025 | trustandsafety@ |
| └ 51.0.64.0/18 | 16,384 | AMAZON-CAI | unknown | ASSIGNED PA | Jul 31, 2026 | trustandsafety@ via US-A100ROW-199300901 |
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
- A100 ROW Inc
- Handle
- ORG-ARI3-RIPE
- Range
- 51.
0. 32. 0 - 51. 0. 127. 255 - Registration type
- ALLOCATED PA
- Record created
- Nov 11, 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
- Dec 2024
- Current origin since
- Dec 2024 · 1.9 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 51.
0. 64. 0/ 18 - Netname
- AMAZON-CAI
- Registrant country
- EG
- Organization
- Not stated by the registry
- Type
- ASSIGNED PA
- Created
- Jul 31, 2026
- Updated
- Jul 31, 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