`bty.cz`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3032::ac43:ce90^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:3288^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.50.136^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.144^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`frida.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2689^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frida.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c289^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`frida.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2289^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`frida.ns.cloudflare.com`
		A	108.162.194.137^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frida.ns.cloudflare.com`
		A	162.159.38.137^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frida.ns.cloudflare.com`
		A	172.64.34.137^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`frida.ns.cloudflare.com`
NS	`trevor.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c9a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trevor.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`trevor.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`trevor.ns.cloudflare.com`
		A	108.162.195.154^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trevor.ns.cloudflare.com`
		A	162.159.44.154^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trevor.ns.cloudflare.com`
		A	172.64.35.154^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`trevor.ns.cloudflare.com`
MX	`mail.protonmail.ch` ⭐
		A	176.119.200.128^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mail.protonmail.ch`
		A	185.70.42.128^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mail.protonmail.ch`
		A	185.205.70.128^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mail.protonmail.ch`
MX	`mailsec.protonmail.ch`⁽²⁰⁾
		A	176.119.200.129^{🇨🇭 Proton176.119.200.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.70.42.129^{🇨🇭 Proton185.70.42.0/24}
			PTR	`mailsec.protonmail.ch`
		A	185.205.70.129^{🇫🇷 Proton185.205.70.0/24}
			PTR	`mailsec.protonmail.ch`
TXT	`protonmail-verification=718eebdb4099184e92e185f3b06969f930445956`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.50.136, 172.67.206.144
		IPv6 hints	2606:4700:3032::ac43:ce90, 2606:4700:3033::6815:3288
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=2, name=cloudflare-ech.com
SOA	`frida.ns.cloudflare.com`dns@cloudflare.com serial=2406617609

`cz`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.ns.nic.cz` ⭐
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`
	SOA	`a.ns.nic.cz`hostmaster@nic.cz serial=1781641037

Same first word

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bty.se

bty.one

bty.co.il

bty.spb.ru

bty.red

bty.nl

bty.org

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Similar names

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ytb.rip

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DNS History

20 records (8 active, 12 former)

●NSfrida.ns.cloudflare.com2026-06-13 → 2026-06-16 · 3 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
● 2026-06-16 20:41:36

○NSns1.digitalocean.com2015-10-24 → 2016-03-28 · 4 obs

● 2015-10-24 09:14:52
● 2016-03-28 03:53:16
○ 2016-09-14 15:13:28
○ 2026-06-16 20:41:36

○NSns2.digitalocean.com2015-10-24 → 2016-03-28 · 4 obs

● 2015-10-24 09:14:52
● 2016-03-28 03:53:16
○ 2016-09-14 15:13:28
○ 2026-06-16 20:41:36

○NSns3.digitalocean.com2015-10-24 → 2016-03-28 · 4 obs

● 2015-10-24 09:14:52
● 2016-03-28 03:53:16
○ 2016-09-14 15:13:28
○ 2026-06-16 20:41:36

○NSns49.domaincontrol.com2016-09-14 → 2017-04-20 · 5 obs

○ 2016-03-28 03:53:16
● 2016-09-14 15:13:28
● 2017-04-20 14:52:08
○ 2026-06-13 11:27:36
○ 2026-06-16 20:41:36

○NSns50.domaincontrol.com2016-09-14 → 2017-04-20 · 5 obs

○ 2016-03-28 03:53:16
● 2016-09-14 15:13:28
● 2017-04-20 14:52:08
○ 2026-06-13 11:27:36
○ 2026-06-16 20:41:36

●NStrevor.ns.cloudflare.com2026-06-13 → 2026-06-16 · 3 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
● 2026-06-16 20:41:36

○MXmail.bty.cz2016-09-14 → 2017-04-20 · 4 obs

● 2016-09-14 15:13:28
● 2017-04-20 14:52:08
○ 2026-06-13 11:27:36
○ 2026-06-16 20:41:36

●MXmail.protonmail.ch2026-06-13 → 2026-06-16 · 3 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
● 2026-06-16 20:41:36

●MXmailsec.protonmail.ch2026-06-13 → 2026-06-16 · 3 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
● 2026-06-16 20:41:36

●A104.21.50.1362026-06-13 → 2026-06-16 · 3 obs

○ 2026-06-13 11:27:36
● 2026-06-13 11:58:26
● 2026-06-16 20:41:36

○A160.153.16.612016-09-14 → 2017-04-20 · 5 obs

○ 2016-03-28 03:53:16
● 2016-09-14 15:13:28
● 2017-04-20 14:52:08
○ 2026-06-13 11:27:36
○ 2026-06-16 20:41:36

●A172.67.206.1442026-06-13 → 2026-06-16 · 3 obs

○ 2026-06-13 11:27:36
● 2026-06-13 11:58:26
● 2026-06-16 20:41:36

○A178.62.255.2422015-10-24 → 2016-03-28 · 4 obs

● 2015-10-24 09:14:52
● 2016-03-28 03:53:16
○ 2016-09-14 15:13:28
○ 2026-06-16 20:41:36

○A188.114.96.42026-06-13 → 2026-06-13 · 4 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
○ 2026-06-13 11:58:26
○ 2026-06-16 20:41:36

○A188.114.97.42026-06-13 → 2026-06-13 · 4 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
○ 2026-06-13 11:58:26
○ 2026-06-16 20:41:36

●A2606:4700:3032::ac43:ce902026-06-13 → 2026-06-16 · 3 obs

○ 2026-06-13 11:27:36
● 2026-06-13 11:58:26
● 2026-06-16 20:41:36

●A2606:4700:3033::6815:32882026-06-13 → 2026-06-16 · 3 obs

○ 2026-06-13 11:27:36
● 2026-06-13 11:58:26
● 2026-06-16 20:41:36

○A2a06:98c1:3120::42026-06-13 → 2026-06-13 · 4 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
○ 2026-06-13 11:58:26
○ 2026-06-16 20:41:36

○A2a06:98c1:3121::42026-06-13 → 2026-06-13 · 4 obs

○ 2017-04-20 14:52:08
● 2026-06-13 11:27:36
○ 2026-06-13 11:58:26
○ 2026-06-16 20:41:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
bty.cz	frida.ns.cloudflare.com, trevor.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.154

NS records: frida.ns.cloudflare.com, trevor.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1118ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.50.136, 172.67.206.144`
AAAA	2	`2606:4700:3032::ac43:ce90, 2606:4700:3033::6815:3288`
NS	2	`frida.ns.cloudflare.com, trevor.ns.cloudflare.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=718eebdb4099184e, v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`frida.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

bty.cz has four IP addresses: 104.21.50.136, 172.67.206.144, 2606:4700:3032::ac43:ce90 and 2606:4700:3033::6815:3288.

Additional host names — thepixellab.co, tunapindustry.com.br, chep.org and two others — share IP numbers with bty.cz.

Name Servers

bty.cz is delegated to two name servers: frida.ns.cloudflare.com and trevor.ns.cloudflare.com.

bty.cz shares its name server setup with other domains, including 323322-crypto.com, fairfieldhealer.com, ominibiz.com and two others.

bty.cz shares at least some of its name servers with other domains, including megablockgame.pl, vulcanproductions.com, kwf.nl and two others.

These name servers are frequently seen alongside the name servers barbara.ns.cloudflare.com, kay.ns.cloudflare.com, linda.ns.cloudflare.com and anton.ns.cloudflare.com.

Host names with 6 IP numbers:

frida.ns.cloudflare.com resolves to 108.162.194.137, 162.159.38.137, 172.64.34.137 and 3 other IP addresses.

trevor.ns.cloudflare.com resolves to 108.162.195.154, 162.159.44.154, 172.64.35.154 and 3 other IP addresses.

Mail Servers

bty.cz has two mail servers: mail.protonmail.ch and mailsec.protonmail.ch.

bty.cz shares the same mail server setup as other domains, including theaerodrome.com, armanienglish.com, zentech.nz and two others.

bty.cz shares mail servers — at least in part — with other domains, including issho.me, backloggd.com, klauser.net and two others.

mail.protonmail.ch and mailsec.protonmail.ch each resolve to three IP addresses. mail.protonmail.ch resolves to 176.119.200.128, 185.70.42.128 and 185.205.70.128. mailsec.protonmail.ch resolves to 176.119.200.129, 185.70.42.129 and 185.205.70.129.

bty.cz - robtex.com

bty.cz

cz

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`bty.cz`

`cz`