hack.cz - dns.ninja

`hack.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:2d1e^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:d037^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.45.30^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.55^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`earl.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3ba1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`earl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1a1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`earl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21a1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`earl.ns.cloudflare.com`
		A	108.162.193.161^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`earl.ns.cloudflare.com`
		A	172.64.33.161^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`earl.ns.cloudflare.com`
		A	173.245.59.161^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`earl.ns.cloudflare.com`
NS	`marjory.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ac1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marjory.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0c1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`marjory.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20c1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`marjory.ns.cloudflare.com`
		A	108.162.192.193^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marjory.ns.cloudflare.com`
		A	172.64.32.193^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marjory.ns.cloudflare.com`
		A	173.245.58.193^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marjory.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=ec747c4af8527d19b0550935716e58f2bfa1d2db`
TXT	`v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.45.30, 172.67.208.55
		IPv6 hints	2606:4700:3033::6815:2d1e, 2606:4700:3037::ac43:d037
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=22, name=cloudflare-ech.com
SOA	`earl.ns.cloudflare.com`dns@cloudflare.com serial=2406521327

`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=1782938837

Previously MX for

czech.xyz

Same first word

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hack.world

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hack.finance

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DNS History

28 records (8 active, 20 former)

●NSearl.ns.cloudflare.com2017-09-11 → 2026-07-01 · 3 obs

○ 2017-06-12 05:16:00
● 2017-09-11 12:41:04
● 2026-07-01 21:21:14

●NSmarjory.ns.cloudflare.com2017-09-11 → 2026-07-01 · 3 obs

○ 2017-06-12 05:16:00
● 2017-09-11 12:41:04
● 2026-07-01 21:21:14

○NSns1.tele3.cz2015-08-29 → 2017-06-12 · 4 obs

● 2015-08-29 09:55:26
● 2017-06-12 05:16:00
○ 2017-09-11 12:41:04
○ 2026-07-01 21:21:14

○NSns2.tele3.cz2015-08-29 → 2017-06-12 · 4 obs

● 2015-08-29 09:55:26
● 2017-06-12 05:16:00
○ 2017-09-11 12:41:04
○ 2026-07-01 21:21:14

○NSns3.tele3.cz2015-08-29 → 2017-06-12 · 4 obs

● 2015-08-29 09:55:26
● 2017-06-12 05:16:00
○ 2017-09-11 12:41:04
○ 2026-07-01 21:21:14

○NSns4.tele3.eu2015-10-17 → 2017-06-12 · 5 obs

○ 2015-08-29 09:55:26
● 2015-10-17 18:01:08
● 2017-06-12 05:16:00
○ 2017-09-11 12:41:04
○ 2026-07-01 21:21:14

○NSns4.tele3.sk2015-08-29 → 2015-08-29 · 3 obs

● 2015-08-29 09:55:26
○ 2015-10-17 18:01:08
○ 2026-07-01 21:21:14

○MXalt1.aspmx.l.google.com2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○MXalt2.aspmx.l.google.com2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○MXalt3.aspmx.l.google.com2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○MXalt4.aspmx.l.google.com2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○MXaspmx.l.google.com2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

●MXmail.protonmail.ch2026-02-16 → 2026-07-01 · 3 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
● 2026-07-01 21:21:14

○MXmail.tutanota.de2020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

●MXmailsec.protonmail.ch2026-02-16 → 2026-07-01 · 3 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
● 2026-07-01 21:21:14

○MXmx.zoho.com2015-08-29 → 2018-09-16 · 4 obs

● 2015-08-29 09:55:26
● 2018-09-16 21:22:34
○ 2020-02-05 13:11:06
○ 2026-07-01 21:21:14

○MXmx2.zoho.com2015-08-29 → 2018-09-16 · 4 obs

● 2015-08-29 09:55:26
● 2018-09-16 21:22:34
○ 2020-02-05 13:11:06
○ 2026-07-01 21:21:14

●A104.21.45.302026-02-16 → 2026-07-01 · 3 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
● 2026-07-01 21:21:14

●A172.67.208.552026-02-16 → 2026-07-01 · 3 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
● 2026-07-01 21:21:14

○A176.9.77.2402020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○A2001:bc8:3597::12015-08-29 → 2016-07-17 · 4 obs

● 2015-08-29 09:55:26
● 2016-07-17 19:27:24
○ 2016-12-09 23:43:20
○ 2026-07-01 21:21:14

●A2606:4700:3033::6815:2d1e2026-06-29 → 2026-07-01 · 3 obs

○ 2026-02-16 02:46:32
● 2026-06-29 11:42:04
● 2026-07-01 21:21:14

○A2606:4700:3036::6815:2d1e2026-02-16 → 2026-02-16 · 4 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
○ 2026-06-29 11:42:04
○ 2026-07-01 21:21:14

○A2606:4700:3036::ac43:d0372026-02-16 → 2026-02-16 · 4 obs

○ 2021-06-25 21:59:00
● 2026-02-16 02:46:32
○ 2026-06-29 11:42:04
○ 2026-07-01 21:21:14

●A2606:4700:3037::ac43:d0372026-06-29 → 2026-07-01 · 3 obs

○ 2026-02-16 02:46:32
● 2026-06-29 11:42:04
● 2026-07-01 21:21:14

○A2a01:4f8:151:11e6::22020-02-05 → 2021-06-25 · 5 obs

○ 2018-09-16 21:22:34
● 2020-02-05 13:11:06
● 2021-06-25 21:59:00
○ 2026-02-16 02:46:32
○ 2026-07-01 21:21:14

○A62.210.177.792015-08-29 → 2016-07-17 · 4 obs

● 2015-08-29 09:55:26
● 2016-07-17 19:27:24
○ 2016-12-09 23:43:20
○ 2026-07-01 21:21:14

○A62.24.88.72016-12-09 → 2018-09-16 · 5 obs

○ 2016-07-17 19:27:24
● 2016-12-09 23:43:20
● 2018-09-16 21:22:34
○ 2020-02-05 13:11:06
○ 2026-07-01 21:21:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
hack.cz	earl.ns.cloudflare.com, marjory.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.161

NS records: earl.ns.cloudflare.com, marjory.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hack.cz (unsigned zone)

⏱️ Timing

Total: 3237ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.45.30, 172.67.208.55`
AAAA	2	`2606:4700:3033::6815:2d1e, 2606:4700:3037::ac43:d037`
NS	2	`earl.ns.cloudflare.com, marjory.ns.cloudflare.com`
MX	2	`mail.protonmail.ch (pri: 10), mailsec.protonmail.ch (pri: 20)`
TXT	2	`protonmail-verification=ec747c4af8527d19, v=spf1 include:_spf.protonmail.ch ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`earl.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

hack.cz has four IP addresses: 104.21.45.30, 172.67.208.55, 2606:4700:3033::6815:2d1e and 2606:4700:3037::ac43:d037.

Among the host names that share IP numbers with hack.cz are app.pesisirbaratkab.go.id, yokaiplay.net, qqqoisdnf123.xyz and two others.

Name Servers

The NS records for hack.cz delegate to earl.ns.cloudflare.com and marjory.ns.cloudflare.com.

hack.cz has the same name server delegation as a number of other domains, such as zazit.cz, centos.cz, vbank.cz and two more.

hack.cz has at least partial name server overlap with other domains, such as turk(0x706f726e)o98.cfd, pfatube.com, finance92-itaque99.pro and two others.

These name servers tend to appear together with the name servers ali.ns.cloudflare.com, ray.ns.cloudflare.com and keenan.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

earl.ns.cloudflare.com maps to 108.162.193.161, 172.64.33.161, 173.245.59.161 and 3 additional IP addresses.

marjory.ns.cloudflare.com maps to 108.162.192.193, 172.64.32.193, 173.245.58.193 and 3 additional IP addresses.

Mail Servers

The MX records for hack.cz point to two mail servers: mail.protonmail.ch and mailsec.protonmail.ch.

hack.cz has the same mail server arrangement as a number of other domains, for example pixline.net, chronicle.ie, darecomm.com and two more.

hack.cz shares at least some of its mail servers with other domains — for example holzmann.io, coinlock.com, hajhouse.org and two more.

mail.protonmail.ch and mailsec.protonmail.ch each have three IP addresses — mail.protonmail.ch directs to 176.119.200.128, 185.70.42.128 and 185.205.70.128; mailsec.protonmail.ch directs to 176.119.200.129, 185.70.42.129 and 185.205.70.129.