`dou18.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:8e93^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3f1a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.63.26^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.142.147^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kate.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a7c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kate.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kate.ns.cloudflare.com`
		A	108.162.192.124^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	172.64.32.124^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
		A	173.245.58.124^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kate.ns.cloudflare.com`
NS	`major.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`major.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`major.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`major.ns.cloudflare.com`
		A	108.162.193.241^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`major.ns.cloudflare.com`
		A	172.64.33.241^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`major.ns.cloudflare.com`
		A	173.245.59.241^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`major.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.63.26, 172.67.142.147
		IPv6 hints	2606:4700:3036::ac43:8e93, 2606:4700:3037::6815:3f1a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=8, name=cloudflare-ech.com
SOA	`kate.ns.cloudflare.com`dns@cloudflare.com serial=2399009424

`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=1776203892

Subdomains

www.dou18.com

Same first word

dou18.com

Similar names

dou81.ru

1dou8.com

18dou.jp

DNS History

15 records (6 active, 9 former)

○NSdns10.hichina.com2015-07-17 → 2015-11-21 · 4 obs

● 2015-07-17 20:25:34
● 2015-11-21 01:09:52
○ 2016-03-21 10:20:34
○ 2026-04-14 22:11:06

○NSdns9.hichina.com2015-07-17 → 2015-11-21 · 4 obs

● 2015-07-17 20:25:34
● 2015-11-21 01:09:52
○ 2016-03-21 10:20:34
○ 2026-04-14 22:11:06

○NSexpirens3.hichina.com2016-03-21 → 2017-02-20 · 5 obs

○ 2015-11-21 01:09:52
● 2016-03-21 10:20:34
● 2017-02-20 00:43:28
○ 2020-01-13 16:33:28
○ 2026-04-14 22:11:06

○NSexpirens4.hichina.com2016-03-21 → 2017-02-20 · 5 obs

○ 2015-11-21 01:09:52
● 2016-03-21 10:20:34
● 2017-02-20 00:43:28
○ 2020-01-13 16:33:28
○ 2026-04-14 22:11:06

○NSjuming.dnsdun.com2020-01-13 → 2020-01-13 · 4 obs

○ 2017-02-20 00:43:28
● 2020-01-13 16:33:28
○ 2026-04-03 14:42:48
○ 2026-04-14 22:11:06

○NSjuming.dnsdun.net2020-01-13 → 2020-01-13 · 4 obs

○ 2017-02-20 00:43:28
● 2020-01-13 16:33:28
○ 2026-04-03 14:42:48
○ 2026-04-14 22:11:06

●NSkate.ns.cloudflare.com2026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

●NSmajor.ns.cloudflare.com2026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

●A104.21.63.262026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

○A120.26.216.1762015-07-17 → 2015-11-21 · 4 obs

● 2015-07-17 20:25:34
● 2015-11-21 01:09:52
○ 2016-03-21 10:20:34
○ 2026-04-14 22:11:06

○A154.80.133.1252020-01-13 → 2020-01-13 · 4 obs

○ 2017-02-20 00:43:28
● 2020-01-13 16:33:28
○ 2026-04-03 14:42:48
○ 2026-04-14 22:11:06

●A172.67.142.1472026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

●A2606:4700:3036::ac43:8e932026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

●A2606:4700:3037::6815:3f1a2026-04-03 → 2026-04-14 · 3 obs

○ 2020-01-13 16:33:28
● 2026-04-03 14:42:48
● 2026-04-14 22:11:06

○A42.120.158.782016-03-21 → 2017-02-20 · 5 obs

○ 2015-11-21 01:09:52
● 2016-03-21 10:20:34
● 2017-02-20 00:43:28
○ 2020-01-13 16:33:28
○ 2026-04-14 22:11:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
dou18.com	kate.ns.cloudflare.com, major.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.241

NS records: kate.ns.cloudflare.com, major.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dou18.com (unsigned zone)

⏱️ Timing

Total: 296ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.142.147, 104.21.63.26`
AAAA	2	`2606:4700:3037::6815:3f1a, 2606:4700:3036::ac43:8e93`
NS	2	`kate.ns.cloudflare.com, major.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kate.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The parent of www.dou18.com is dou18.com.

IP Addresses

dou18.com maps to four IP numbers: 2606:4700:3036::ac43:8e93, 2606:4700:3037::6815:3f1a, 104.21.63.26 and 172.67.142.147.

other host names include 1shunfa.com, adlog.fineproxy.ru, prernacollegeofcommerce.org, jazzfm.net and 2806230.com.cdn.cloudflare.net; they share IP numbers with dou18.com.

Name Servers

Two name servers kate.ns.cloudflare.com and major.ns.cloudflare.com handle the delegation for dou18.com.

dou18.com shares the same name server setup as other domains, for instance haofaduo.com, hbdrc.com, ideapo.com, gzxyyzsw.com and hshbzs.com.

dou18.com at least partially shares name servers with other domains, for instance ttihub.com, venkotech.com, grafisk-litteratur.dk, onenicebook.com and sinter.tk.

These name servers are commonly used with mitchell.ns.cloudflare.com and dora.ns.cloudflare.com.

Six IP addresses per host:

kate.ns.cloudflare.com points to 2606:4700:50::adf5:3a7c, 2803:f800:50::6ca2:c07c, 2a06:98c1:50::ac40:207c, 108.162.192.124, 172.64.32.124 and 173.245.58.124; major.ns.cloudflare.com points to 2606:4700:58::adf5:3bf1, 2803:f800:50::6ca2:c1f1, 2a06:98c1:50::ac40:21f1, 108.162.193.241, 172.64.33.241 and 173.245.59.241

dou18.com - robtex.com

dou18.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`dou18.com`

`com`