21.com - dns.ninja

`21.com`

DNSSEC	⚠️ Not signed
A	104.18.20.225^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.21.225^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`clint.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b5a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clint.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clint.ns.cloudflare.com`
		A	108.162.193.90^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	172.64.33.90^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	173.245.59.90^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
NS	`serenity.ns.cloudflare.com`
		A	2606:4700:50::a29f:266c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c26c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`serenity.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:226c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`serenity.ns.cloudflare.com`
		A	108.162.194.108^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	162.159.38.108^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
		A	172.64.34.108^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`serenity.ns.cloudflare.com`
MX	`smtp.google.com` ⭐
		A	2607:f8b0:4004:c1b::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`wv-in-f26.1e100.net`
		A	2607:f8b0:4004:c29::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f26.1e100.net`
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	2607:f8b0:4004:c2d::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`ry-in-f27.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
		A	142.251.163.27^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f27.1e100.net`
		A	173.194.45.26^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f26.1e100.net`
		A	173.194.45.27^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f27.1e100.net`
		A	192.179.18.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ry-in-f26.1e100.net`
TXT	`google-gws-recovery-domain-verification=70219444`
TXT	`google-site-verification=UHGFb4fMfL3oj271bh_gIXnDtZtfMeTJThgmGPLkh8k`
TXT	`v=spf1 include:_spf.google.com include:sendgrid.net include:spf.mtasv.net ~all`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.18.20.225, 104.18.21.225
SOA	`clint.ns.cloudflare.com`dns@cloudflare.com serial=2411375168

`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=1785972274

rank #244371 globally
rank #102141 in the tld
⚠️ On DNS blocklist: gambling, gambling.medium, gambling.mini
WOT: UNKNOWN (70/100)
📈 Tranco rank: #147,187

Subdomains

www.21.com

Same first word

21.(0x787878)

21.ink

21.pictures

21.show

21.nl

21.agency

21.co

21.biz

21.lv

21.uk

21.ru

21.co.za

21.co.tz

21.lc

21.finance

21.re

21.co.com

21.ax

21.business

21.casino

21.red

21.pl

21.ee

21.tel

21.partners

21.to

21.cl

21.ie

21.photos

21.cc

21.city

21.gs

21.fr

21.live

21.by

21.com.es

21.net.cn

21.eu

21.run

21.pw

21.se

21.org.cn

21.chat

21.net

21.game

21.la

21.ag

21.diamonds

21.cn

21.de

21.training

21.ca

21.cf

21.org

21.com.tw

21.co.uk

21.vc

21.am

21.im

21.rs

21.amsterdam

21.com

21.net.au

21.bet

21.center

21.kz

21.fyi

21.cm

21.web.app

21.su

21.network

21.si

21.ph

21.is

21.be

21.com.ua

21.pe

21.edu.ar

21.gg

21.technology

21.capital

21.dk

21.email

21.ai

21.wf

21.sk

21.zone

21.immo

21.hk

21.cz

21.academy

21.style

21.school

Similar names

12.de

12.net.au

12.co.kr

12.in-addr.arpa

12.ag

12.kz

12.ie

12.plus

12.com.ua

12.cz

12.eu

12.uk

12.sg

12.life

12.network

12.dk

12.com.cn

12.cx

12.org

12.nu

12.gl

12.vip

12.net.cn

12.gr

12.fyi

12.ai

12.tt

12.hk

12.gs

12.amsterdam

12.fr

12.vc

12.am

12.agency

12.digital

12.ac.cn

12.com.vn

12.lt

12.si

12.cfd

12.tf

12.pw

12.be

12.fi

12.cc

12.is

12.chat

12.netlify.app

12.app

12.solutions

12.dyndns.tv

DNS History

51 records (5 active, 46 former)

○NSaarav.ns.cloudflare.com2021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

●NSclint.ns.cloudflare.com2026-02-16 → 2026-08-05 · 3 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-08-05 23:36:14

○NSdns1.name-services.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○NSdns1.safenames.com2020-10-13 → 2020-10-13 · 4 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
○ 2021-10-24 02:17:58
○ 2026-08-05 23:36:14

○NSdns2.name-services.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○NSdns2.safenames.net2020-10-13 → 2020-10-13 · 4 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
○ 2021-10-24 02:17:58
○ 2026-08-05 23:36:14

○NSdns3.name-services.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○NSdns3.safenames.org2020-10-13 → 2020-10-13 · 4 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
○ 2021-10-24 02:17:58
○ 2026-08-05 23:36:14

○NSdns4.name-services.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○NSdns5.name-services.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○NSjen.ns.cloudflare.com2021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○NSns.myhosting.com2016-07-09 → 2017-11-03 · 5 obs

○ 2016-05-13 16:39:22
● 2016-07-09 08:35:04
● 2017-11-03 17:24:26
○ 2020-10-13 01:55:12
○ 2026-08-05 23:36:14

○NSns1.myhosting.com2016-07-09 → 2017-11-03 · 5 obs

○ 2016-05-13 16:39:22
● 2016-07-09 08:35:04
● 2017-11-03 17:24:26
○ 2020-10-13 01:55:12
○ 2026-08-05 23:36:14

○NSns2.myhosting.com2016-07-09 → 2017-11-03 · 5 obs

○ 2016-05-13 16:39:22
● 2016-07-09 08:35:04
● 2017-11-03 17:24:26
○ 2020-10-13 01:55:12
○ 2026-08-05 23:36:14

●NSserenity.ns.cloudflare.com2026-02-16 → 2026-08-05 · 3 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-08-05 23:36:14

○NSwww.21.com2015-09-21 → 2016-05-13 · 5 obs

○ 2015-09-04 22:26:54
● 2015-09-21 08:22:42
● 2016-05-13 16:39:22
○ 2016-07-09 08:35:04
○ 2026-08-05 23:36:14

○MXalt1.aspmx.l.google.com2020-10-13 → 2021-10-24 · 5 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○MXalt2.aspmx.l.google.com2020-10-13 → 2021-10-24 · 5 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○MXalt3.aspmx.l.google.com2020-10-13 → 2021-10-24 · 5 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○MXalt4.aspmx.l.google.com2020-10-13 → 2021-10-24 · 5 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○MXaspmx.l.google.com2020-10-13 → 2021-10-24 · 5 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○MXio.bouncemx.com2015-09-21 → 2016-05-13 · 5 obs

○ 2015-09-04 22:26:54
● 2015-09-21 08:22:42
● 2016-05-13 16:39:22
○ 2016-07-09 08:35:04
○ 2026-08-05 23:36:14

○MXmx.spamexperts.com2016-07-09 → 2017-11-03 · 5 obs

○ 2016-05-13 16:39:22
● 2016-07-09 08:35:04
● 2017-11-03 17:24:26
○ 2020-10-13 01:55:12
○ 2026-08-05 23:36:14

○MXp.nsm.ctmail.com2015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○MXroute1.mx.cloudflare.net2026-02-16 → 2026-04-18 · 5 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-04-18 10:35:44
○ 2026-04-19 13:54:12
○ 2026-08-05 23:36:14

○MXroute2.mx.cloudflare.net2026-02-16 → 2026-04-18 · 5 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-04-18 10:35:44
○ 2026-04-19 13:54:12
○ 2026-08-05 23:36:14

○MXroute3.mx.cloudflare.net2026-02-16 → 2026-04-18 · 5 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-04-18 10:35:44
○ 2026-04-19 13:54:12
○ 2026-08-05 23:36:14

●MXsmtp.google.com2026-04-19 → 2026-08-05 · 3 obs

○ 2026-04-18 10:35:44
● 2026-04-19 13:54:12
● 2026-08-05 23:36:14

●A104.18.20.2252026-02-16 → 2026-08-05 · 3 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-08-05 23:36:14

●A104.18.21.2252026-02-16 → 2026-08-05 · 3 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
● 2026-08-05 23:36:14

○A104.22.6.1532021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A104.22.7.1532021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A159.100.24.1452020-10-13 → 2020-10-13 · 4 obs

○ 2017-11-03 17:24:26
● 2020-10-13 01:55:12
○ 2021-10-24 02:17:58
○ 2026-08-05 23:36:14

○A168.144.109.152016-07-09 → 2017-11-03 · 5 obs

○ 2016-05-13 16:39:22
● 2016-07-09 08:35:04
● 2017-11-03 17:24:26
○ 2020-10-13 01:55:12
○ 2026-08-05 23:36:14

○A172.67.21.402021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A2606:4700::6812:14e12026-02-16 → 2026-02-16 · 4 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
○ 2026-07-14 11:26:40
○ 2026-08-05 23:36:14

○A2606:4700::6812:15e12026-02-16 → 2026-02-16 · 4 obs

○ 2021-10-24 02:17:58
● 2026-02-16 02:14:16
○ 2026-07-14 11:26:40
○ 2026-08-05 23:36:14

○A2606:4700:10::6816:6992021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A2606:4700:10::6816:7992021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A2606:4700:10::ac43:15282021-10-24 → 2021-10-24 · 4 obs

○ 2020-10-13 01:55:12
● 2021-10-24 02:17:58
○ 2026-02-16 02:14:16
○ 2026-08-05 23:36:14

○A69.64.147.2432015-08-08 → 2015-09-04 · 4 obs

● 2015-08-08 03:51:12
● 2015-09-04 22:26:54
○ 2015-09-21 08:22:42
○ 2026-08-05 23:36:14

○A70.39.84.2272015-09-23 → 2015-09-23 · 4 obs

○ 2015-09-21 08:22:42
● 2015-09-23 21:43:18
○ 2015-10-08 13:33:00
○ 2026-08-05 23:36:14

○A70.39.84.2282015-12-31 → 2015-12-31 · 4 obs

○ 2015-12-08 13:32:56
● 2015-12-31 07:52:42
○ 2016-01-12 02:26:48
○ 2026-08-05 23:36:14

○A70.39.84.2312016-01-12 → 2016-01-12 · 4 obs

○ 2015-12-31 07:52:42
● 2016-01-12 02:26:48
○ 2016-02-03 01:21:44
○ 2026-08-05 23:36:14

○A70.39.84.2332015-10-08 → 2016-03-19 · 7 obs

○ 2015-09-23 21:43:18
● 2015-10-08 13:33:00
○ 2015-10-25 15:44:18
○ 2016-02-03 01:21:44
● 2016-03-19 22:48:52
○ 2016-04-23 10:42:18
○ 2026-08-05 23:36:14

○A70.39.84.2372015-12-08 → 2015-12-08 · 4 obs

○ 2015-10-25 15:44:18
● 2015-12-08 13:32:56
○ 2015-12-31 07:52:42
○ 2026-08-05 23:36:14

○A70.39.84.2382016-02-03 → 2016-02-03 · 4 obs

○ 2016-01-12 02:26:48
● 2016-02-03 01:21:44
○ 2016-03-19 22:48:52
○ 2026-08-05 23:36:14

○A70.39.84.2402015-09-21 → 2015-09-21 · 4 obs

○ 2015-09-04 22:26:54
● 2015-09-21 08:22:42
○ 2015-09-23 21:43:18
○ 2026-08-05 23:36:14

○A70.39.84.2412015-10-25 → 2015-10-25 · 4 obs

○ 2015-10-08 13:33:00
● 2015-10-25 15:44:18
○ 2015-12-08 13:32:56
○ 2026-08-05 23:36:14

○A70.39.84.2422016-04-23 → 2016-05-13 · 5 obs

○ 2016-03-19 22:48:52
● 2016-04-23 10:42:18
● 2016-05-13 16:39:22
○ 2016-07-09 08:35:04
○ 2026-08-05 23:36:14

○CNAMEnum2.dcoin.co2015-09-21 → 2016-05-13 · 4 obs

● 2015-09-21 08:22:42
● 2016-05-13 16:39:22
○ 2016-07-09 08:35:04
○ 2026-08-05 23:36:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
21.com	clint.ns.cloudflare.com, serenity.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.90

NS records: clint.ns.cloudflare.com, serenity.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21.com (unsigned zone)

⏱️ Timing

Total: 209ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.21.225, 104.18.20.225`
NS	2	`clint.ns.cloudflare.com, serenity.ns.cloudflare.com`
MX	1	`smtp.google.com (pri: 1)`
TXT	3	`google-gws-recovery-domain-verification=, google-site-verification=UHGFb4fMfL3oj27...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`clint.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

21.com serves as the parent of www.21.com.

IP Addresses

21.com resolves to the IP addresses 104.18.20.225 and 104.18.21.225

feldschloesschen.swiss, www.webmvr.com, ninja.new and two other host names share IP numbers with 21.com.

Name Servers

Two name servers handle the delegation for 21.com: clint.ns.cloudflare.com and serenity.ns.cloudflare.com.

21.com uses the same name servers as several other domains — among them raag.org.tw, assessoria-scout.pages.dev, tpdc.org.tw and two more.

21.com has at least partial name server overlap with other domains, such as 43688.biz, dcdeploy.com, keongjp.it.com and two others.

It is common to find these name servers paired with the name servers wally.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

clint.ns.cloudflare.com resolves to 108.162.193.90, 172.64.33.90 and 173.245.59.90 among others, with 3 other IP addresses in total.

serenity.ns.cloudflare.com resolves to 108.162.194.108, 162.159.38.108 and 172.64.34.108 among others, with 3 other IP addresses in total.

Mail Servers

Mail for 21.com is handled by a single mail server, smtp.google.com.

21.com uses an identical mail server configuration to several other domains — among them sudafarm.com, phongkhamduyennguyen.com, clary.app and two more.

21.com has at least partial mail server overlap with other domains such as boxtronics.com, luminederp.com, americanhelix.com and two more.

These mail servers commonly appear together with alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, aspmx.l.google.com and two other mail servers.

smtp.google.com resolves to 9 IP addresses — 142.251.163.26, 142.251.163.27, 173.194.45.26 and 6 others.