duducool.com - dns.ninja

`duducool.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:bc63^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:28d6^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.40.214^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.188.99^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`carol.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a50^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carol.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c050^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`carol.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2050^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`carol.ns.cloudflare.com`
		A	108.162.192.80^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carol.ns.cloudflare.com`
		A	172.64.32.80^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carol.ns.cloudflare.com`
		A	173.245.58.80^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`carol.ns.cloudflare.com`
NS	`darwin.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b97^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`darwin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c197^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`darwin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2197^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`darwin.ns.cloudflare.com`
		A	108.162.193.151^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`darwin.ns.cloudflare.com`
		A	172.64.33.151^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`darwin.ns.cloudflare.com`
		A	173.245.59.151^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`darwin.ns.cloudflare.com`
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.40.214, 172.67.188.99
		IPv6 hints	2606:4700:3031::ac43:bc63, 2606:4700:3033::6815:28d6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=60, name=cloudflare-ech.com
SOA	`carol.ns.cloudflare.com`dns@cloudflare.com serial=2406754709

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784470877

Same first word

duducool.com

Similar names

duocloud.net.nz

udocloud.net

doucloud.com

udocloud.com

cloudduo.com

doucloud.net

duocloud.com

oducloud.com

cloudduo.cn

clouddou.com

duocloud.net

cloudduo.xyz

DNS History

19 records (8 active, 11 former)

●NScarol.ns.cloudflare.com2026-02-23 → 2026-07-19 · 3 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-07-19 14:49:38

●NSdarwin.ns.cloudflare.com2026-02-23 → 2026-07-19 · 3 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-07-19 14:49:38

○NSjason.ns.cloudflare.com2017-10-13 → 2018-10-06 · 4 obs

● 2017-10-13 20:00:18
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

○NSvita.ns.cloudflare.com2017-10-13 → 2018-10-06 · 4 obs

● 2017-10-13 20:00:18
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

●MXmxbiz1.qq.com2018-08-14 → 2026-07-19 · 2 obs

● 2018-08-14 23:21:44
● 2026-07-19 14:49:38

●MXmxbiz2.qq.com2018-08-14 → 2026-07-19 · 2 obs

● 2018-08-14 23:21:44
● 2026-07-19 14:49:38

●A104.21.40.2142026-02-23 → 2026-07-19 · 3 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-07-19 14:49:38

○A104.31.82.2022018-08-14 → 2018-10-06 · 5 obs

○ 2017-10-13 20:00:18
● 2018-08-14 23:21:44
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

○A104.31.83.2022018-08-14 → 2018-10-06 · 5 obs

○ 2017-10-13 20:00:18
● 2018-08-14 23:21:44
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

●A172.67.188.992026-02-23 → 2026-07-19 · 3 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-07-19 14:49:38

○A2400:cb00:2048:1::681f:52ca2018-08-14 → 2018-08-14 · 4 obs

○ 2017-10-13 20:00:18
● 2018-08-14 23:21:44
○ 2018-10-06 09:40:24
○ 2026-07-19 14:49:38

○A2400:cb00:2048:1::681f:53ca2018-08-14 → 2018-08-14 · 4 obs

○ 2017-10-13 20:00:18
● 2018-08-14 23:21:44
○ 2018-10-06 09:40:24
○ 2026-07-19 14:49:38

○A2606:4700:30::681f:52ca2018-10-06 → 2018-10-06 · 4 obs

○ 2018-08-14 23:21:44
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

○A2606:4700:30::681f:53ca2018-10-06 → 2018-10-06 · 4 obs

○ 2018-08-14 23:21:44
● 2018-10-06 09:40:24
○ 2026-02-23 00:05:22
○ 2026-07-19 14:49:38

○A2606:4700:3030::ac43:bc632026-02-23 → 2026-05-08 · 5 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-05-08 15:39:04
○ 2026-07-14 11:23:18
○ 2026-07-19 14:49:38

○A2606:4700:3031::6815:28d62026-02-23 → 2026-05-08 · 5 obs

○ 2018-10-06 09:40:24
● 2026-02-23 00:05:22
● 2026-05-08 15:39:04
○ 2026-07-14 11:23:18
○ 2026-07-19 14:49:38

●A2606:4700:3031::ac43:bc632026-07-14 → 2026-07-19 · 3 obs

○ 2026-05-08 15:39:04
● 2026-07-14 11:23:18
● 2026-07-19 14:49:38

●A2606:4700:3033::6815:28d62026-07-14 → 2026-07-19 · 3 obs

○ 2026-05-08 15:39:04
● 2026-07-14 11:23:18
● 2026-07-19 14:49:38

○A67.229.95.2432017-10-13 → 2017-10-13 · 3 obs

● 2017-10-13 20:00:18
○ 2018-08-14 23:21:44
○ 2026-07-19 14:49:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, j.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net...	-
duducool.com	carol.ns.cloudflare.com, darwin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.80

NS records: carol.ns.cloudflare.com, darwin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duducool.com (unsigned zone)

⏱️ Timing

Total: 196ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.188.99, 104.21.40.214`
AAAA	2	`2606:4700:3031::ac43:bc63, 2606:4700:3033::6815:28d6`
NS	2	`carol.ns.cloudflare.com, darwin.ns.cloudflare.com`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`carol.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (carol.ns.cloudflare.com, carol.ns.cloudflare.com, carol.ns.cloudflare.com...)

Analysis

IP Addresses

duducool.com points to the four IP addresses 104.21.40.214, 172.67.188.99, 2606:4700:3031::ac43:bc63 and 2606:4700:3033::6815:28d6.

stichsaege-test.net, safe-manager.com, nerdoatchoughiz.com and two other host names share IP numbers with duducool.com.

Name Servers

duducool.com uses two name servers for its delegation: carol.ns.cloudflare.com and darwin.ns.cloudflare.com.

duducool.com uses the same name servers as several other domains — among them slicelife.info, notesoffice.uk, slicelife.com and two more.

At least some of duducool.com's name servers are shared with other domains, for example bestmobil.sk, staehle.us, staydownunder.com and two more.

It is common for these name servers to be used in conjunction with the name servers kia.ns.cloudflare.com, ada.ns.cloudflare.com and newt.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname carol.ns.cloudflare.com directs to 108.162.192.80, 172.64.32.80 and 173.245.58.80 along with 3 other IP addresses.

Hostname darwin.ns.cloudflare.com directs to 108.162.193.151, 172.64.33.151 and 173.245.59.151 along with 3 other IP addresses.

Mail Servers

Mail for duducool.com is handled by two mail servers — mxbiz1.qq.com and mxbiz2.qq.com.

duducool.com uses an identical mail server configuration to several other domains — among them nh5.com, joyouscamp.com, motion-con.com and two more.

duducool.com has at least partial mail server overlap with other domains such as htshenzhou.com, jyex.cn, ads56.com and two more.