LAYER3 INTEL
Get started
Sign in
Data as of Nov 8, 2026

143.204.210.0/23

No anonymizer space · no proxy exits in 30 days

Amazon.com, Inc. · reallocated from Amazon Technologies Inc.

Announcement
143.204.208.0/21
RPKI valid
Announced by
AS16509
Type
Hosting
Risk
50 / 100 · Medium
Recent change
New origin Aug 2026
from AS16509 Amazon.com, Inc.

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
143.204.0.0/1665,536AT-88-ZAmazon Technologies Inc. (AT-88-Z) · USDirect AllocationJan 5, 2018trustandsafety@support.aws.com
└ 143.204.0.0/1665,536AMAZO-CFAmazon.com, Inc. (AMAZON-4) · USReallocatedMay 8, 2018trustandsafety@support.aws.com

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Announced by

Covering announcement 143.204.208.0/21

Prefix
143.204.208.0/21
Announced by
AS16509 Amazon.com, Inc.
Type
Hosting
RPKI
RPKI valid
Netname
AMAZO-CF
Registrant
Amazon.com, Inc.
RIR
ARIN
IPv4 market

Holder

Holder in the market →
Organization
Amazon Technologies Inc.
Handle
AT-88-Z
Range
143.204.0.0/16
Registration type
Direct Allocation
Record created
Jan 5, 2018
Reallocated to
Amazon.com, Inc. (AMAZON-4)
Reallocated
May 8, 2018
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