`du.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:255a^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:ce9b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.37.90^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.155^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arushi.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:263d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arushi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c23d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arushi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:223d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arushi.ns.cloudflare.com`
		A	108.162.194.61^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arushi.ns.cloudflare.com`
		A	162.159.38.61^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arushi.ns.cloudflare.com`
		A	172.64.34.61^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arushi.ns.cloudflare.com`
NS	`vick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf4^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f4^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f4^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vick.ns.cloudflare.com`
		A	108.162.193.244^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	172.64.33.244^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
		A	173.245.59.244^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vick.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽³⁵⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽¹⁰⁰⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`apple-domain=3wXgGtk9aKsyaAXs`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.37.90, 172.67.206.155
		IPv6 hints	2606:4700:3036::6815:255a, 2606:4700:3037::ac43:ce9b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`arushi.ns.cloudflare.com`dns@cloudflare.com serial=2410089037

`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)

Same first word

du.ie

du.gov.mn

du.nu

du.de

du.dk

du.edu.et

du.fi

du.tr

du.ru

du.com.mx

du.ac.in

du.edu.eg

du.be

du.my

du.cz

du.tn

du.pl

du.edu.tr

du.ac.kr

du.by

du.edu.vn

du.ma

du.st

du.cx

du.soccer

du.org

du.pe

du.kg

du.am

du.lv

du.no

du.email

du.net

du.works

du.ppg.br

du.com.pl

du.chat

du.co

du.cn

du.coach

du.ag

du.idv.tw

du.ac

du.se

du.pa

du.hu

du.ro

du.com.ar

du.ee

du.country

du.edu.pk

du.today

du.sk

du.com

du.ae

du.biz

du.io

du.ac.ir

du.kz

du.ph

du.edu.om

du.wtf

du.edu

du.fitness

du.do

du.com.pe

du.world

du.is

du.ms

du.rs

du.co.nz

du.cc

du.to

du.dev

du.family

du.si

du.eu

du.lt

du.su

du.ws

du.or.kr

Similar names

ud.ae

ud.org.ua

ud.world

ud.wtf

ud.org.cn

ud.eu

ud.cl

ud.com.au

ud.com.ua

ud.cz

ud.ac.th

ud.in.ua

ud.ltd

ud.me

ud.com.sa

ud.pl

ud.io

ud.tv

ud.ie

ud.wine

ud.net

ud.cc

ud.fi

ud.ro

ud.cn

ud.co.th

ud.ac.ae

ud.no

ud.my

ud.hk

ud.co.nz

ud.dep.no

ud.ag

ud.chat

ud.ua

ud.cm

ud.edu.vn

ud.net.cn

ud.nl

ud.sh

DNS History

15 records (9 active, 6 former)

●NSarushi.ns.cloudflare.com2026-02-16 → 2026-07-23 · 2 obs

● 2026-02-16 02:31:38
● 2026-07-23 20:09:54

●NSvick.ns.cloudflare.com2026-02-16 → 2026-07-23 · 2 obs

● 2026-02-16 02:31:38
● 2026-07-23 20:09:54

○MXmx01.mail.icloud.com2026-02-16 → 2026-05-26 · 5 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-05-26 22:50:24
○ 2026-06-04 19:10:44
○ 2026-07-23 20:09:54

○MXmx02.mail.icloud.com2026-02-16 → 2026-05-26 · 5 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-05-26 22:50:24
○ 2026-06-04 19:10:44
○ 2026-07-23 20:09:54

●MXroute1.mx.cloudflare.net2026-06-04 → 2026-07-23 · 3 obs

○ 2026-05-26 22:50:24
● 2026-06-04 19:10:44
● 2026-07-23 20:09:54

●MXroute2.mx.cloudflare.net2026-06-04 → 2026-07-23 · 3 obs

○ 2026-05-26 22:50:24
● 2026-06-04 19:10:44
● 2026-07-23 20:09:54

●MXroute3.mx.cloudflare.net2026-06-04 → 2026-07-23 · 3 obs

○ 2026-05-26 22:50:24
● 2026-06-04 19:10:44
● 2026-07-23 20:09:54

○MXyour-dns-needs-immediate-attention.dev2017-04-02 → 2017-07-26 · 4 obs

● 2017-04-02 11:48:32
● 2017-07-26 08:50:42
○ 2026-02-16 02:31:38
○ 2026-07-23 20:09:54

●A104.21.37.902026-02-16 → 2026-07-23 · 3 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-07-23 20:09:54

○A127.0.53.532017-04-02 → 2017-07-26 · 4 obs

● 2017-04-02 11:48:32
● 2017-07-26 08:50:42
○ 2026-02-16 02:31:38
○ 2026-07-23 20:09:54

●A172.67.206.1552026-02-16 → 2026-07-23 · 3 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-07-23 20:09:54

●A2606:4700:3036::6815:255a2026-06-26 → 2026-07-23 · 3 obs

○ 2026-06-14 16:01:56
● 2026-06-26 15:07:32
● 2026-07-23 20:09:54

○A2606:4700:3036::ac43:ce9b2026-02-16 → 2026-06-14 · 5 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-06-14 16:01:56
○ 2026-06-26 15:07:32
○ 2026-07-23 20:09:54

○A2606:4700:3037::6815:255a2026-02-16 → 2026-06-14 · 5 obs

○ 2017-07-26 08:50:42
● 2026-02-16 02:31:38
● 2026-06-14 16:01:56
○ 2026-06-26 15:07:32
○ 2026-07-23 20:09:54

●A2606:4700:3037::ac43:ce9b2026-06-26 → 2026-07-23 · 3 obs

○ 2026-06-14 16:01:56
● 2026-06-26 15:07:32
● 2026-07-23 20:09:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
du.dev	vick.ns.cloudflare.com, arushi.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.61

NS records: vick.ns.cloudflare.com, arushi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for du.dev (unsigned zone)

⏱️ Timing

Total: 545ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.37.90, 172.67.206.155`
AAAA	2	`2606:4700:3037::ac43:ce9b, 2606:4700:3036::6815:255a`
NS	2	`arushi.ns.cloudflare.com, vick.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 100), route3.mx.cloudflare.net (pri: 27)...`
TXT	2	`apple-domain=3wXgGtk9aKsyaAXs, v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`arushi.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

du.dev has four IP addresses: 104.21.37.90, 172.67.206.155, 2606:4700:3036::6815:255a and 2606:4700:3037::ac43:ce9b.

Additional host names — shopkitchendecor.com, playnode.net, lemesee.com and two others — share IP numbers with du.dev.

Name Servers

DNS delegation for du.dev points to two name servers: arushi.ns.cloudflare.com and vick.ns.cloudflare.com.

du.dev shares its name server setup with other domains, including regio-cloud.net, zmotos.com.br, peachgarden.rest and two others.

du.dev shares at least some of its name servers with other domains, including ag0426.com, mistersend.it, flowonsystems.ca and two others.

These name servers are frequently seen alongside the name servers eoin.ns.cloudflare.com, etta.ns.cloudflare.com, harmony.ns.cloudflare.com and leo.ns.cloudflare.com.

Host names with 6 IP numbers:

arushi.ns.cloudflare.com has IP addresses 108.162.194.61, 162.159.38.61 and 172.64.34.61, plus 3 other.

vick.ns.cloudflare.com has IP addresses 108.162.193.244, 172.64.33.244 and 173.245.59.244, plus 3 other.

Mail Servers

du.dev is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

du.dev shares mail servers — at least in part — with other domains, including doozie.io, spinbet.asia, bienaca.com and two others.

Host names with 6 IP numbers:

route1.mx.cloudflare.net has IP addresses 162.159.205.11, 162.159.205.12 and 162.159.205.13, plus 3 other.

route2.mx.cloudflare.net has IP addresses 162.159.205.17, 162.159.205.18 and 162.159.205.19, plus 3 other.

route3.mx.cloudflare.net has IP addresses 162.159.205.23, 162.159.205.24 and 162.159.205.25, plus 3 other.

du.dev - robtex.com

du.dev

dev

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`du.dev`

`dev`