a21.dev - dns.ninja

`a21.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:28af^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9bbf^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.40.175^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.155.191^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`kenia.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:265d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c25d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kenia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:225d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kenia.ns.cloudflare.com`
		A	108.162.194.93^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenia.ns.cloudflare.com`
		A	162.159.38.93^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenia.ns.cloudflare.com`
		A	172.64.34.93^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kenia.ns.cloudflare.com`
NS	`trace.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cac^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ac^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`trace.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ac^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`trace.ns.cloudflare.com`
		A	108.162.195.172^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	162.159.44.172^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
		A	172.64.35.172^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trace.ns.cloudflare.com`
MX	`route2.mx.cloudflare.net` ⭐
		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`⁽⁹²⁾
		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	`route3.mx.cloudflare.net`⁽⁹⁶⁾
		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`
TXT	`brevo-code:7233656d553009d691d5930995fc4fd2`
TXT	`v=spf1 include:_spf.mx.cloudflare.net include:spf.brevo.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.40.175, 172.67.155.191
		IPv6 hints	2606:4700:3034::6815:28af, 2606:4700:3036::ac43:9bbf
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=155, name=cloudflare-ech.com
SOA	`kenia.ns.cloudflare.com`dns@cloudflare.com serial=2406039349

`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

a21.no

a21.ch

a21.me

a21.es

a21.eu

a21.ca

a21.com.mx

a21.net

a21.kr

a21.ru

a21.it

a21.org

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a21.one

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a21.fr

a21.nl

a21.cc

a21.gr

a21.co.kr

a21.co.uk

a21.cz

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a21.myqnapcloud.com

a21.tv

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a12.ro

12a.ru

12a.ee

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12a.net

21a.org

21a.ch

a12.com.pl

2a1.pro

12a.de

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12a.com.cn

21a.top

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12a.co

12a.ai

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a12.cc

a12.it

a12.se

12a.me

a12.com.br

a12.org.br

a12.es

a12.be

21a.co

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1a2.ru

21a.mobi

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12a.eu

21a.net

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12a.at

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21a.cc

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1a2.de

2a1.net

a12.cz

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a12.at

2a1.es

a12.org

12a.in

2a1.de

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2a1.com.br

12a.ch

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a12.me

DNS History

15 records (9 active, 6 former)

●NSkenia.ns.cloudflare.com2026-04-30 → 2026-06-27 · 2 obs

● 2026-04-30 12:07:16
● 2026-06-27 10:12:58

●NStrace.ns.cloudflare.com2026-04-30 → 2026-06-27 · 2 obs

● 2026-04-30 12:07:16
● 2026-06-27 10:12:58

●MXroute1.mx.cloudflare.net2026-04-30 → 2026-06-27 · 2 obs

● 2026-04-30 12:07:16
● 2026-06-27 10:12:58

●MXroute2.mx.cloudflare.net2026-04-30 → 2026-06-27 · 2 obs

● 2026-04-30 12:07:16
● 2026-06-27 10:12:58

●MXroute3.mx.cloudflare.net2026-04-30 → 2026-06-27 · 2 obs

● 2026-04-30 12:07:16
● 2026-06-27 10:12:58

●A104.21.40.1752026-04-30 → 2026-06-27 · 4 obs

● 2026-04-30 12:07:16
● 2026-06-14 04:45:32
○ 2026-06-16 02:28:02
● 2026-06-27 10:12:58

●A172.67.155.1912026-04-30 → 2026-06-27 · 4 obs

● 2026-04-30 12:07:16
● 2026-06-14 04:45:32
○ 2026-06-16 02:28:02
● 2026-06-27 10:12:58

○A188.114.96.02026-06-16 → 2026-06-16 · 3 obs

○ 2026-06-14 04:45:32
● 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

○A188.114.97.02026-06-16 → 2026-06-16 · 3 obs

○ 2026-06-14 04:45:32
● 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

○A2606:4700:3031::ac43:9bbf2026-04-30 → 2026-06-14 · 4 obs

● 2026-04-30 12:07:16
● 2026-06-14 04:45:32
○ 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

●A2606:4700:3034::6815:28af2026-06-27 → 2026-06-27 · 2 obs

○ 2026-06-16 02:28:02
● 2026-06-27 10:12:58

○A2606:4700:3035::6815:28af2026-04-30 → 2026-06-14 · 4 obs

● 2026-04-30 12:07:16
● 2026-06-14 04:45:32
○ 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

●A2606:4700:3036::ac43:9bbf2026-06-27 → 2026-06-27 · 2 obs

○ 2026-06-16 02:28:02
● 2026-06-27 10:12:58

○A2a06:98c1:3120::2026-06-16 → 2026-06-16 · 3 obs

○ 2026-06-14 04:45:32
● 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

○A2a06:98c1:3121::2026-06-16 → 2026-06-16 · 3 obs

○ 2026-06-14 04:45:32
● 2026-06-16 02:28:02
○ 2026-06-27 10:12:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
a21.dev	trace.ns.cloudflare.com, kenia.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.172

NS records: trace.ns.cloudflare.com, kenia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for a21.dev (unsigned zone)

⏱️ Timing

Total: 854ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.40.175, 172.67.155.191`
AAAA	2	`2606:4700:3036::ac43:9bbf, 2606:4700:3034::6815:28af`
NS	2	`kenia.ns.cloudflare.com, trace.ns.cloudflare.com`
MX	3	`route2.mx.cloudflare.net (pri: 21), route1.mx.cloudflare.net (pri: 92)...`
TXT	2	`brevo-code:7233656d553009d691d5930995fc4, v=spf1 include:_spf.mx.cloudflare.net in`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`kenia.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

a21.dev has four IP addresses: 104.21.40.175, 172.67.155.191, 2606:4700:3034::6815:28af and 2606:4700:3036::ac43:9bbf.

fitness(0x7075737379).com, www.farcont.com.ua, supershot.info plus two other host names have IP numbers in common with a21.dev.

Name Servers

The NS records for a21.dev delegate to kenia.ns.cloudflare.com and trace.ns.cloudflare.com.

The name server configuration of a21.dev is shared with other domains, for instance kolja-engelmann.de, deepgambling.co.uk, fluidsystem.com and two others.

a21.dev partially shares its NS delegation with several other domains, including eastwindchinesesushi.com, simpsonsissonsandbrooke.co.uk, arena39two.site and two others.

These name servers are regularly seen alongside becky.ns.cloudflare.com and everton.ns.cloudflare.com as name servers.

Hosts with 6 IP addresses each:

kenia.ns.cloudflare.com maps to 108.162.194.93, 162.159.38.93, 172.64.34.93 and 3 additional IP addresses.

trace.ns.cloudflare.com maps to 108.162.195.172, 162.159.44.172, 172.64.35.172 and 3 additional IP addresses.

Mail Servers

a21.dev uses three mail servers — route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

At least some of the mail servers used by a21.dev are shared with other domains: erkbilisim.net, megabombs.com, idlehamster.com and two others among them.

Hosts with 6 IP addresses each:

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.