`build-cloud.docker.com`

DNSSEC	⚠️ Not signed
A	3.219.52.251^{🇺🇸 Amazon3.208.0.0/12 EC2 IAD prefix}
		PTR	`ec2-3-219-52-251.compute-1.amazonaws.com`
A	34.238.202.185^{🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix}
A	44.197.223.118^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
NS	`ns-1895.awsdns-44.co.uk` ⭐
		A	2600:9000:5307:6700::1^{Amazon2600:9000:5307::/48 - CloudFront}
		A	205.251.199.103^{Amazon205.251.199.0/24 prefix}
NS	`ns-1406.awsdns-47.org`
		A	2600:9000:5305:7e00::1^{Amazon2600:9000:5305::/48 - CloudFront}
		A	205.251.197.126^{Amazon205.251.197.0/24 prefix}
NS	`ns-507.awsdns-63.com`
		A	2600:9000:5301:fb00::1^{Amazon2600:9000:5301::/48 - CloudFront}
		A	205.251.193.251^{Amazon205.251.193.0/24 prefix}
NS	`ns-535.awsdns-02.net`
		A	2600:9000:5302:1700::1^{Amazon2600:9000:5302::/48 - CloudFront}
		A	205.251.194.23^{Amazon205.251.194.0/24 prefix}
TXT	`heritage=external-dns,external-dns/owner=external-dns-aws-us-east-1-prod,exte...`
SOA	`ns-1895.awsdns-44.co.uk`awsdns-hostmaster@amazon.com serial=1

`docker.com`

	DNSSEC	⚠️ Not signed
	A	2620:12a:8000::4^{🇺🇸 Fastly2620:12a:8000::/44 Pantheon}
	A	2620:12a:8001::4^{🇺🇸 Fastly2620:12a:8000::/44 Pantheon}
	A	23.185.0.4^{🇺🇸 Fastly23.185.0.0/24 Pantheon}
	NS	`ns-207.awsdns-25.com` ⭐
	NS	`ns-1289.awsdns-33.org`
	NS	`ns-1981.awsdns-55.co.uk`
	NS	`ns-568.awsdns-07.net`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`MS=ms42223923`
	TXT	`MS=ms98031138`
	TXT	`adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791...`
	TXT	`airtable-verification=7f122efe7db6b16848108e469042c39c`
	TXT	`anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3`
	TXT	`apple-domain-verification=S580UenDqcwy2I1X`
	TXT	`astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn`
	TXT	`atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+...`
	TXT	`cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd`
	TXT	`d0vcwvtyam`
	TXT	`detectify-verification=87a64c3bf3301354588d90672bd1b74e`
	TXT	`docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31`
	TXT	`docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8`
	TXT	`google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s`
	TXT	`google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M`
	TXT	`google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM`
	TXT	`google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0`
	TXT	`google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M`
	TXT	`google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08`
	TXT	`google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I`
	TXT	`google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg`
	TXT	`jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ`
	TXT	`miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f`
	TXT	`onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1`
	TXT	`openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju`
	TXT	`opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46`
	TXT	`sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be`
	TXT	`sonatype-domain-verification=OSSRH-62474`
	TXT	`stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e7...`
	TXT	`v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforc...`
	TXT	`zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06`
	SOA	`ns-207.awsdns-25.com`awsdns-hostmaster@amazon.com serial=1

WOT: SAFE (94/100)
rank #275 globally
rank #178 in the tld
This domain, "docker.com", is the official website for Docker, a platform that allows developers to automate the deployment, scaling, and management of applications. Docker uses containerization technology to package an application along with all its dependencies into a container, ensuring the application works seamlessly in any environment. Docker.com provides access to Docker products, documentation, community, and resources.WOT: SAFE (94/100)
📈 Tranco rank: #523

Docker

Docker is a leading platform for building, sharing, and running containerized applications. Founded in 2013, Docker revolutionized software development by popularizing container technology, enabling developers to package applications with all their dependencies into standardized units called containers.

Products & Services

Docker Desktop - Development environment for building and testing containers locally
Docker Hub - Public registry hosting millions of container images
Docker Build Cloud - Cloud-based container image building service
Docker Scout - Software supply chain security and vulnerability analysis

Infrastructure

Service	Provider
CDN/Hosting	Fastly (23.185.0.4)
DNS	AWS Route 53 (ns-207.awsdns-25.com + 3 others)
Email	Google Workspace (aspmx.l.google.com)
IPv6	2620:12a:8000::4, 2620:12a:8001::4

Notable Facts

Ranks #266 globally and #171 in .com (Tranco: #525)
Acquired by Mirantis (Docker Enterprise) in 2019; Docker Inc. retained Docker Desktop and Hub
Over 20 million developers use Docker monthly
DNSSEC is not enabled for this domain

DNS History

7 records (7 active, 0 former)

●NSns-1406.awsdns-47.org2026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●NSns-1895.awsdns-44.co.uk2026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●NSns-507.awsdns-63.com2026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●NSns-535.awsdns-02.net2026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●A3.219.52.2512026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●A34.238.202.1852026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

●A44.197.223.1182026-04-02 → 2026-05-10 · 2 obs

● 2026-04-02 05:31:48
● 2026-05-10 09:31:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, k.gtld-servers.net, f.gtld-servers.net, i.gtld-servers.net...	-
docker.com	ns-207.awsdns-25.com, ns-568.awsdns-07.net, ns-1289.awsdns-33.org, ns-1981.awsdns-55.co.uk	2 records
build-cloud.docker.com	ns-1406.awsdns-47.org, ns-1895.awsdns-44.co.uk, ns-507.awsdns-63.com, ns-535.awsdns-02.net	-

✅ Authoritative Response

Server:205.251.199.103

NS records: ns-1406.awsdns-47.org, ns-1895.awsdns-44.co.uk, ns-507.awsdns-63.com, ns-535.awsdns-02.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for docker.com (unsigned zone)

⏱️ Timing

Total: 1988ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`34.238.202.185, 44.197.223.118...`
NS	4	`ns-1406.awsdns-47.org, ns-1895.awsdns-44.co.uk...`
TXT	1	`heritage=external-dns,external-dns/owner`
SOA	1	`ns-1895.awsdns-44.co.uk awsdns-hostmaste`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-207.awsdns-25.com, ns-207.awsdns-25.com)

Analysis

IP Addresses

build-cloud.docker.com resolves to three IP numbers: 3.219.52.251, 34.238.202.185 and 44.197.223.118.

Other host names, for instance, ec2-34-238-202-185.compute-1.amazonaws.com share IP numbers with build-cloud.docker.com.

Name Servers

build-cloud.docker.com is delegated to four name servers: ns-507.awsdns-63.com, ns-535.awsdns-02.net, ns-1406.awsdns-47.org and ns-1895.awsdns-44.co.uk.

Host names with two IP numbers:

ns-507.awsdns-63.com points to: 2600:9000:5301:fb00::1 and 205.251.193.251

ns-535.awsdns-02.net points to: 2600:9000:5302:1700::1 and 205.251.194.23

ns-1406.awsdns-47.org points to: 2600:9000:5305:7e00::1 and 205.251.197.126

ns-1895.awsdns-44.co.uk points to: 2600:9000:5307:6700::1 and 205.251.199.103

build-cloud.docker.com - robtex.com