dukou.dev - dns.ninja

`dukou.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:bcd8^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:8f7^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.8.247^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.188.216^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`holly.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2685^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`holly.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c285^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`holly.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2285^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`holly.ns.cloudflare.com`
		A	108.162.194.133^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`holly.ns.cloudflare.com`
		A	162.159.38.133^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`holly.ns.cloudflare.com`
		A	172.64.34.133^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`holly.ns.cloudflare.com`
NS	`patryk.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c7a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`patryk.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`patryk.ns.cloudflare.com`
		A	108.162.195.122^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	162.159.44.122^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
		A	172.64.35.122^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`patryk.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.8.247, 172.67.188.216
		IPv6 hints	2606:4700:3030::ac43:bcd8, 2606:4700:3035::6815:8f7
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=192, name=cloudflare-ech.com
SOA	`holly.ns.cloudflare.com`dns@cloudflare.com serial=2407132367

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Subdomains

www.dukou.dev

Same first word

dukou.dev

dukou.icu

Similar names

kuudo.net

kudou.org

kudou.tv

ukudo.com

okudu.de

udoku.com

okudu.com

okudu.co.uk

koduu.com

douku.tv

kudou.net

douku.net

kuudo.co

kudou.cn

duoku.com

dukuo.cn

koudu.net

udoku.info

udoku.net

kuudo.de

kuodu.com.cn

kudou.name

kudou.jp

oduku.com

duuko.com

kuduo.com

kudou.co.jp

kudou.com

kudou.com.cn

udoku.de

kuodu.net

kudou.biz

duoku.com.cn

DNS History

14 records (6 active, 8 former)

●NSholly.ns.cloudflare.com2026-02-18 → 2026-07-01 · 2 obs

● 2026-02-18 08:50:02
● 2026-07-01 00:01:20

●NSpatryk.ns.cloudflare.com2026-02-18 → 2026-07-01 · 2 obs

● 2026-02-18 08:50:02
● 2026-07-01 00:01:20

●A104.21.8.2472026-02-18 → 2026-07-01 · 5 obs

● 2026-02-18 08:50:02
○ 2026-02-18 16:01:26
○ 2026-02-24 17:01:06
● 2026-03-03 08:33:32
● 2026-07-01 00:01:20

●A172.67.188.2162026-02-18 → 2026-07-01 · 5 obs

● 2026-02-18 08:50:02
○ 2026-02-18 16:01:26
○ 2026-02-24 17:01:06
● 2026-03-03 08:33:32
● 2026-07-01 00:01:20

○A188.114.96.02026-02-18 → 2026-02-24 · 5 obs

○ 2026-02-18 08:50:02
● 2026-02-18 16:01:26
● 2026-02-24 17:01:06
○ 2026-03-03 08:33:32
○ 2026-07-01 00:01:20

○A188.114.97.02026-02-18 → 2026-02-24 · 5 obs

○ 2026-02-18 08:50:02
● 2026-02-18 16:01:26
● 2026-02-24 17:01:06
○ 2026-03-03 08:33:32
○ 2026-07-01 00:01:20

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-03 → 2026-03-03 · 4 obs

○ 2026-02-24 17:01:06
● 2026-03-03 08:33:32
○ 2026-04-01 11:17:38
○ 2026-07-01 00:01:20

●A2606:4700:3030::ac43:bcd82026-02-18 → 2026-07-01 · 5 obs

● 2026-02-18 08:50:02
○ 2026-02-18 16:01:26
○ 2026-03-03 08:33:32
● 2026-04-01 11:17:38
● 2026-07-01 00:01:20

○A2606:4700:3032::6815:8f72026-02-18 → 2026-06-09 · 6 obs

● 2026-02-18 08:50:02
○ 2026-02-18 16:01:26
○ 2026-03-03 08:33:32
● 2026-04-01 11:17:38
● 2026-06-09 21:04:52
○ 2026-07-01 00:01:20

●A2606:4700:3035::6815:8f72026-07-01 → 2026-07-01 · 2 obs

○ 2026-06-09 21:04:52
● 2026-07-01 00:01:20

○A2a06:98c1:3120::2026-02-24 → 2026-02-24 · 4 obs

○ 2026-02-18 16:01:26
● 2026-02-24 17:01:06
○ 2026-03-03 08:33:32
○ 2026-07-01 00:01:20

○A2a06:98c1:3120::42026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 08:50:02
● 2026-02-18 16:01:26
○ 2026-02-24 17:01:06
○ 2026-07-01 00:01:20

○A2a06:98c1:3121::2026-02-24 → 2026-02-24 · 4 obs

○ 2026-02-18 16:01:26
● 2026-02-24 17:01:06
○ 2026-03-03 08:33:32
○ 2026-07-01 00:01:20

○A2a06:98c1:3121::42026-02-18 → 2026-02-18 · 4 obs

○ 2026-02-18 08:50:02
● 2026-02-18 16:01:26
○ 2026-02-24 17:01:06
○ 2026-07-01 00:01:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
dukou.dev	holly.ns.cloudflare.com, patryk.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.133

NS records: holly.ns.cloudflare.com, patryk.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dukou.dev (unsigned zone)

⏱️ Timing

Total: 618ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.8.247, 172.67.188.216`
AAAA	2	`2606:4700:3030::ac43:bcd8, 2606:4700:3035::6815:8f7`
NS	2	`holly.ns.cloudflare.com, patryk.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`holly.ns.cloudflare.com dns.cloudflare.c`

Analysis

Hierarchy

www.dukou.dev is a subdomain of dukou.dev.

IP Addresses

dukou.dev points to the four IP addresses 104.21.8.247, 172.67.188.216, 2606:4700:3030::ac43:bcd8 and 2606:4700:3035::6815:8f7.

www.nathanbaudoin.com, bareknucklepickups.com, baltbet.co and two other host names share IP numbers with dukou.dev.

Name Servers

dukou.dev uses two name servers for its delegation: holly.ns.cloudflare.com and patryk.ns.cloudflare.com.

dukou.dev uses the same name servers as several other domains — among them kirsehirpasta.com.tr, flgwls.com, yalovapasta.com.tr and two more.

The name servers of dukou.dev overlap at least partially with those of other domains — among them the-fan.net, sh-su.com, bestsmsmarketingsolutions.com and two more.

These name servers commonly co-occur with the name servers gannon.ns.cloudflare.com, meilani.ns.cloudflare.com, jocelyn.ns.cloudflare.com and carla.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname holly.ns.cloudflare.com directs to 108.162.194.133, 162.159.38.133 and 172.64.34.133 along with 3 other IP addresses.

Hostname patryk.ns.cloudflare.com directs to 108.162.195.122, 162.159.44.122 and 172.64.35.122 along with 3 other IP addresses.