🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`21.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:d8a6^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:2da4^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.45.164^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.216.166^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`grant.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c82^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`grant.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c382^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`grant.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2382^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`grant.ns.cloudflare.com`
		A	108.162.195.130^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	162.159.44.130^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.35.130^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`samara.ns.cloudflare.com`
		A	2606:4700:50::a29f:26a0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`samara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`samara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`samara.ns.cloudflare.com`
		A	108.162.194.160^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`samara.ns.cloudflare.com`
		A	162.159.38.160^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`samara.ns.cloudflare.com`
		A	172.64.34.160^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`samara.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	`route2.mx.cloudflare.net`⁽⁹⁾
		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`
MX	`route1.mx.cloudflare.net`⁽⁷⁸⁾
		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`
TXT	`apple-domain=7B4QQD1m7hcxuWqH`
TXT	`google-site-verification=vweqap3w7IaJ4XXnSEcAve91uybyRnXEV4k8VC8Ldg0`
TXT	`v=spf1 include:icloud.com include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.45.164, 172.67.216.166
		IPv6 hints	2606:4700:3030::ac43:d8a6, 2606:4700:3031::6815:2da4
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=146, name=cloudflare-ech.com
SOA	`grant.ns.cloudflare.com`dns@cloudflare.com serial=2415324385

`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

21.com.vn

21.info.tr

21.tel

21.hn

21.partners

21.to

21.ie

21.photos

21.sb

21.net.pl

21.cc

21.city

21.solutions

21.gl

21.cash

21.plus

21.gs

21.fr

21.live

21.co.na

21.rw

21.by

21.app

21.co.mw

21.com.es

21.games

21.net.ar

21.com.ph

21.net.cn

21.no

21.pt

21.br.com

21.eu

21.dev

21.co.kr

21.ci

21.spb.ru

21.run

21.limited

21.vn.ua

21.cx

21.bingo

21.pw

21.gifts

21.se

21.photography

21.ventures

21.org.cn

21.org.ua

21.ar

21.chat

21.world

21.net

21.co.cm

21.energy

21.delivery

21.co.ci

21.com.mw

21.game

21.la

21.wine

21.ag

21.care

21.diamonds

21.cn

21.de

21.co.bw

21.training

21.tm

21.today

21.ca

21.com.na

21.free

21.cf

21.org

21.com.tw

21.luxury

21.news

21.co.uk

21.al

21.money

21.cr

21.vc

21.berlin

21.am

21.edu.kg

21.im

21.rs

21.amsterdam

21.com.pl

21.familyds.com

21.com

21.net.au

21.bet

21.2ix.de

21.center

21.ke

21.icu

21.kz

21.fun

21.fyi

21.cm

21.xyz

21.co.nl

21.eco

21.web.app

21.ngrok.app

21.su

21.network

21.si

21.je

21.ph

21.uy

21.is

21.be

21.com.ua

21.tax

21.ddns.net

21.pe

21.org.pe

21.law

21.com.cm

21.edu.ar

21.gg

21.markets

21.technology

21.capital

21.vercel.app

21.win

21.co.id

21.dk

21.email

21.new

21.co.zw

21.com.zm

21.ai

21.pages.dev

21.wf

21.co.no

21.wtf

21.brussels

21.com.ci

21.biz.id

21.me

21.me.uk

21.sk

21.dn.ua

21.zone

21.immo

21.hk

21.pm

21.co.zm

21.cz

21.net.ph

21.style

21.school

21.irish

21.com.ug

21.(0x787878)

21.ink

21.pictures

21.io.vn

21.show

21.nl

21.agency

21.co

21.org.ph

21.studio

21.biz

Similar names

12.co.nz

12.cn.eu.org

12.net.au

12.co.kr

12.in-addr.arpa

12.com.au

12.ag

12.kz

12.vin

12.ie

12.workers.dev

12.law

12.social

12.plus

12.com.ua

12.red

12.cz

12.icu

12.baby

12.eu

12.pm

12.uk

12.sg

12.life

12.pt

12.foo

12.org.uk

12.energy

12.net.ph

12.network

12.dk

12.com.cn

12.inf.ua

12.cx

12.org

12.nu

12.gl

12.vip

12.net.cn

21.lv

21.uk

12.pe

12.studio

12.gr

12.fyi

21.ru

12.tips

21.co.za

12.ai

21.cg

12.cloudns.org

12.tt

21.co.tz

21.lc

21.finance

12.homeip.net

12.team

21.fi

21.re

12.hk

Previous names

2048.dev

205.dev

207studio.dev

2090.dev

20after4.dev

20c.dev

20forge.dev

20goto10.dev

20grad.dev

20h.dev

20i.dev

20jw88.dev

20min.dev

20minutes.dev

20n.dev

20on-chain.dev

20pillars.dev

20testers.dev

20thr.dev

20web.dev

Next names

21-vision.dev

210labs.dev

210studio.dev

210z.dev

2112.dev

2119.dev

212a.dev

212clab.dev

212f-labs.dev

2137.dev

2140.dev

2147483647.dev

216labs.dev

21ads.dev

21b.dev

21blackjack.dev

21e8.dev

21factors.dev

21g.dev

DNS History

13 records (9 active, 4 former)

●NSgrant.ns.cloudflare.com2026-09-20 → 2026-10-03 · 2 obs

● 2026-09-20 11:47:28
● 2026-10-03 13:01:44

●NSsamara.ns.cloudflare.com2026-09-20 → 2026-10-03 · 2 obs

● 2026-09-20 11:47:28
● 2026-10-03 13:01:44

●MXroute1.mx.cloudflare.net2026-09-20 → 2026-10-03 · 2 obs

● 2026-09-20 11:47:28
● 2026-10-03 13:01:44

●MXroute2.mx.cloudflare.net2026-09-20 → 2026-10-03 · 2 obs

● 2026-09-20 11:47:28
● 2026-10-03 13:01:44

●MXroute3.mx.cloudflare.net2026-09-20 → 2026-10-03 · 2 obs

● 2026-09-20 11:47:28
● 2026-10-03 13:01:44

●A104.21.45.1642026-09-21 → 2026-10-03 · 3 obs

○ 2026-09-20 11:47:28
● 2026-09-21 23:06:44
● 2026-10-03 13:01:44

●A172.67.216.1662026-09-21 → 2026-10-03 · 3 obs

○ 2026-09-20 11:47:28
● 2026-09-21 23:06:44
● 2026-10-03 13:01:44

○A188.114.96.02026-09-20 → 2026-09-20 · 3 obs

● 2026-09-20 11:47:28
○ 2026-09-21 23:06:44
○ 2026-10-03 13:01:44

○A188.114.97.02026-09-20 → 2026-09-20 · 3 obs

● 2026-09-20 11:47:28
○ 2026-09-21 23:06:44
○ 2026-10-03 13:01:44

●A2606:4700:3030::ac43:d8a62026-09-21 → 2026-10-03 · 3 obs

○ 2026-09-20 11:47:28
● 2026-09-21 23:06:44
● 2026-10-03 13:01:44

●A2606:4700:3031::6815:2da42026-09-21 → 2026-10-03 · 3 obs

○ 2026-09-20 11:47:28
● 2026-09-21 23:06:44
● 2026-10-03 13:01:44

○A2a06:98c1:3120::2026-09-20 → 2026-09-20 · 3 obs

● 2026-09-20 11:47:28
○ 2026-09-21 23:06:44
○ 2026-10-03 13:01:44

○A2a06:98c1:3121::2026-09-20 → 2026-09-20 · 3 obs

● 2026-09-20 11:47:28
○ 2026-09-21 23:06:44
○ 2026-10-03 13:01:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	10 records
21.dev	samara.ns.cloudflare.com, grant.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.130

NS records: samara.ns.cloudflare.com, grant.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21.dev (unsigned zone)

⏱️ Timing

Total: 1247ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.216.166, 104.21.45.164`
AAAA	2	`2606:4700:3031::6815:2da4, 2606:4700:3030::ac43:d8a6`
NS	2	`grant.ns.cloudflare.com, samara.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 2), route1.mx.cloudflare.net (pri: 78)...`
TXT	3	`apple-domain=7B4QQD1m7hcxuWqH, google-site-verification=vweqap3w7IaJ4XX...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`grant.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...)

Analysis

IP Addresses

21.dev directs to four IP numbers, which are 104.21.45.164, 172.67.216.166, 2606:4700:3030::ac43:d8a6 and 2606:4700:3031::6815:2da4.

Among the host names that share IP numbers with 21.dev are moobox.store, desicutz.com, cljnsl.com.br and two others.

Name Servers

The NS records for 21.dev delegate to grant.ns.cloudflare.com and samara.ns.cloudflare.com.

21.dev has the same name server delegation as a number of other domains, such as flat-mountain-9896.workers.dev, juanllavero3314.workers.dev, julienevano-website.pages.dev and two more.

At least some of 21.dev's name servers are shared with other domains, for example mond-casino.co.nl, taimei-t039.com, 600vipa.com and two more.

These name servers are often deployed together with the name servers tony.ns.cloudflare.com, donovan.ns.cloudflare.com, salvador.ns.cloudflare.com and ali.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

grant.ns.cloudflare.com maps to 108.162.195.130, 162.159.44.130, 172.64.35.130 and 3 additional IP addresses.

samara.ns.cloudflare.com maps to 108.162.194.160, 162.159.38.160, 172.64.34.160 and 3 additional IP addresses.

Mail Servers

The MX records for 21.dev list three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

21.dev shares at least some of its mail servers with other domains — for example subastasactivas.com, gestorg.com, swiftlabsyard.shop and two more.

Host names resolving to 6 IP numbers:

route1.mx.cloudflare.net maps to 162.159.205.11, 162.159.205.12, 162.159.205.13 and 3 additional IP addresses.

route2.mx.cloudflare.net maps to 162.159.205.17, 162.159.205.18, 162.159.205.19 and 3 additional IP addresses.

route3.mx.cloudflare.net maps to 162.159.205.23, 162.159.205.24, 162.159.205.25 and 3 additional IP addresses.

21.dev - robtex.com

21.dev

dev

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`21.dev`

`dev`