dockerfiles.io - dns.ninja

`dockerfiles.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:1b8f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8eec^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.27.143^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.142.236^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`deb.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a5c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`deb.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c05c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`deb.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:205c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`deb.ns.cloudflare.com`
		A	108.162.192.92^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`deb.ns.cloudflare.com`
		A	172.64.32.92^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`deb.ns.cloudflare.com`
		A	173.245.58.92^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`deb.ns.cloudflare.com`
NS	`nolan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c38^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c338^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nolan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2338^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nolan.ns.cloudflare.com`
		A	108.162.195.56^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	162.159.44.56^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
		A	172.64.35.56^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nolan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.27.143, 172.67.142.236
		IPv6 hints	2606:4700:3033::6815:1b8f, 2606:4700:3037::ac43:8eec
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=113, name=cloudflare-ech.com
SOA	`deb.ns.cloudflare.com`dns@cloudflare.com serial=2410576529

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1786019612

Same first word

dockerfiles.com

dockerfiles.io

DNS History

7 records (6 active, 1 former)

●NSdeb.ns.cloudflare.com2026-02-15 → 2026-08-06 · 2 obs

● 2026-02-15 12:33:24
● 2026-08-06 12:47:44

●NSnolan.ns.cloudflare.com2026-02-15 → 2026-08-06 · 2 obs

● 2026-02-15 12:33:24
● 2026-08-06 12:47:44

●A104.21.27.1432026-02-15 → 2026-08-06 · 2 obs

● 2026-02-15 12:33:24
● 2026-08-06 12:47:44

●A172.67.142.2362026-02-15 → 2026-08-06 · 2 obs

● 2026-02-15 12:33:24
● 2026-08-06 12:47:44

●A2606:4700:3033::6815:1b8f2026-07-11 → 2026-08-06 · 3 obs

○ 2026-05-02 20:42:52
● 2026-07-11 23:36:34
● 2026-08-06 12:47:44

○A2606:4700:3037::6815:1b8f2026-02-15 → 2026-05-02 · 4 obs

● 2026-02-15 12:33:24
● 2026-05-02 20:42:52
○ 2026-07-11 23:36:34
○ 2026-08-06 12:47:44

●A2606:4700:3037::ac43:8eec2026-02-15 → 2026-08-06 · 2 obs

● 2026-02-15 12:33:24
● 2026-08-06 12:47:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, b0.nic.io, a0.nic.io, a2.nic.io	-
dockerfiles.io	nolan.ns.cloudflare.com, deb.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.92

NS records: nolan.ns.cloudflare.com, deb.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dockerfiles.io (unsigned zone)

⏱️ Timing

Total: 387ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.142.236, 104.21.27.143`
AAAA	2	`2606:4700:3037::ac43:8eec, 2606:4700:3033::6815:1b8f`
NS	2	`deb.ns.cloudflare.com, nolan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`deb.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

dockerfiles.io has four IP addresses: 104.21.27.143, 172.67.142.236, 2606:4700:3033::6815:1b8f and 2606:4700:3037::ac43:8eec.

6443dae47e55.6443dae47e55.6443dae47e55.6443dae47e55.ekspertbudowlany.pl, mail1.broadstreetcorp.com, www.runningacrosstexas.com plus two other host names have IP numbers in common with dockerfiles.io.

Name Servers

Two name servers handle the delegation for dockerfiles.io: deb.ns.cloudflare.com and nolan.ns.cloudflare.com.

The name server configuration of dockerfiles.io is shared with other domains, for instance mallarme.com.mx, liquidfactory.io, go88-livecasino.com and two others.

dockerfiles.io shares at least some of its name servers with other domains, including atova.ru, nebscorp.ca, 22-bet-es.com and two others.

These name servers are frequently paired with the name servers amy.ns.cloudflare.com and venkat.ns.cloudflare.com.

Hosts with 6 IP addresses each:

deb.ns.cloudflare.com resolves to 108.162.192.92, 172.64.32.92 and 173.245.58.92 among others, with 3 other IP addresses in total.

nolan.ns.cloudflare.com resolves to 108.162.195.56, 162.159.44.56 and 172.64.35.56 among others, with 3 other IP addresses in total.