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Amazon Web Services Nameservers, IP Ranges & DNS Settings

Amazon Web Services is a cloud platform offering cloud infrastructure: EC2 servers, S3 storage, Lightsail VPS, CloudFront CDN and Route 53 DNS. Here are its IP ranges and ASN, the records that identify it, and a checker to see whether any website is hosted on Amazon Web Services.

Network data collected September 25, 2026 from Team Cymru, RIPEstat and live DNS.

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Find out who hosts any website: host, CDN, CMS, email provider, registrar and SSL issuer

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Amazon Web Services at a Glance

TypeCloud platform
Websiteaws.amazon.com
Network (ASN)AS16509 AMAZON-02, AS14618 AMAZON-AES
Announced IP space20,874 IPv4 prefixes (~242,694,144 addresses), 6,675 IPv6 prefixes
Customer nameserversNone: keep your DNS provider and add the records from the dashboard

Amazon Web Services Nameservers

Amazon Web Services does not ask customers to move their nameservers. Your domain stays with its current DNS provider, and you point it at Amazon Web Services with the A, AAAA or CNAME record shown in your Amazon Web Services dashboard (CNAME targets look like *.amazonaws.com, *.awsglobalaccelerator.com). Verify the record afterwards with the DNS lookup.

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Amazon Web Services IP Ranges and ASN

Amazon Web Services announces its address space from 2 autonomous systems. Any website whose IP address falls in these ranges runs on Amazon Web Services's network. Counts are from the global routing table on September 25, 2026.

ASNRegistered nameRegistryIPv4 prefixesIPv4 addressesIPv6 prefixes
AS16509AMAZON-02 - Amazon.com, Inc., USarin · since 200019,428218,713,0886,022
AS14618AMAZON-AES - Amazon.com, Inc., USarin · since 20051,44623,981,056653

Largest Amazon Web Services IP blocks

3.0.0.0/103.64.0.0/103.128.0.0/103.192.0.0/1034.192.0.0/1044.192.0.0/10184.192.0.0/1044.224.0.0/112406:da00::/242600:1f00::/2444.192.0.0/113.80.0.0/123.208.0.0/123.224.0.0/1234.192.0.0/1234.224.0.0/12100.48.0.0/12184.192.0.0/122a01:bb22::/332a01:bb22:8000::/33

Look up any address in these blocks with the IP lookup or the ASN lookup.

How to Check if a Website Is Hosted on Amazon Web Services

Enter the domain in the checker at the top of this page. It names Amazon Web Services when one or more of these signals match, and lists each one as evidence:

  • The site's IP address is inside AS16509 or AS14618, the network Amazon Web Services announces.
  • The www record is a CNAME to *.amazonaws.com, *.awsglobalaccelerator.com.
  • The domain uses Amazon Web Services nameservers (*.awsdns-NN.com, *.awsdns-NN.net, *.awsdns-NN.org, *.awsdns-NN.co.uk). This shows where DNS is managed, which is usually but not always the host.

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Amazon Web Services FAQ

What are Amazon Web Services's nameservers?

Amazon Web Services does not ask customers to switch nameservers. You keep DNS at your registrar or DNS provider and add the A, AAAA or CNAME record shown in your Amazon Web Services dashboard.

What is Amazon Web Services's ASN?

Amazon Web Services announces its IP addresses from AS16509 (AMAZON-02, registered with ARIN) and AS14618 (AMAZON-AES, registered with ARIN).

How many IP addresses does Amazon Web Services have?

As of September 25, 2026, Amazon Web Services's network announces 20,874 IPv4 prefixes covering about 242,694,144 IPv4 addresses, plus 6,675 IPv6 prefixes (source: RIPEstat routing data).

How can I tell if a website is hosted on Amazon Web Services?

Run the domain through the hosting checker on this page. It reports Amazon Web Services when the site's IP address is inside AS16509 or AS14618, the network Amazon Web Services announces, and it shows every matching signal as evidence.

Is Amazon Web Services a web host or a CDN?

Amazon Web Services is a cloud platform: it provides cloud infrastructure: EC2 servers, S3 storage, Lightsail VPS, CloudFront CDN and Route 53 DNS.

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Other Hosting Providers

Google Cloud nameservers & IP rangesMicrosoft Azure nameservers & IP ranges

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Amazon Web Services is a trademark of its owner. DNS Robot is not affiliated with Amazon Web Services unless an offer above is marked sponsored.