code.cz - dns.ninja

`code.cz`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3030::6815:7cd^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:825a^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.7.205^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.90^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`amy.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a65^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c065^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`amy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2065^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`amy.ns.cloudflare.com`
		A	108.162.192.101^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amy.ns.cloudflare.com`
		A	172.64.32.101^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amy.ns.cloudflare.com`
		A	173.245.58.101^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amy.ns.cloudflare.com`
NS	`graham.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bab^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`graham.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ab^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`graham.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ab^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`graham.ns.cloudflare.com`
		A	108.162.193.171^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`graham.ns.cloudflare.com`
		A	172.64.33.171^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`graham.ns.cloudflare.com`
		A	173.245.59.171^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`graham.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		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`⁽⁹³⁾
		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`⁽⁹⁵⁾
		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`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.7.205, 172.67.130.90
		IPv6 hints	2606:4700:3030::6815:7cd, 2606:4700:3032::ac43:825a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=15, name=cloudflare-ech.com
SOA	`amy.ns.cloudflare.com`dns@cloudflare.com serial=2405570957

`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=1780566434

Same first word

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DNS History

24 records (9 active, 15 former)

○NSalfa.ns.active24.cz2015-08-03 → 2016-04-16 · 4 obs

● 2015-08-03 16:21:24
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

●NSamy.ns.cloudflare.com2026-02-16 → 2026-06-04 · 3 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
● 2026-06-04 09:52:02

○NSbeta.ns.active24.cz2015-08-03 → 2016-04-16 · 4 obs

● 2015-08-03 16:21:24
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

○NSgama.ns.active24.sk2015-08-03 → 2016-04-16 · 4 obs

● 2015-08-03 16:21:24
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

●NSgraham.ns.cloudflare.com2026-02-16 → 2026-06-04 · 3 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
● 2026-06-04 09:52:02

○MXin.smtp.cz2015-08-03 → 2016-04-16 · 4 obs

● 2015-08-03 16:21:24
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

○MXmx.smtp.cz2015-08-03 → 2016-04-16 · 4 obs

● 2015-08-03 16:21:24
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

●MXroute1.mx.cloudflare.net2026-02-16 → 2026-06-04 · 3 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
● 2026-06-04 09:52:02

●MXroute2.mx.cloudflare.net2026-02-16 → 2026-06-04 · 3 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
● 2026-06-04 09:52:02

●MXroute3.mx.cloudflare.net2026-02-16 → 2026-06-04 · 3 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
● 2026-06-04 09:52:02

●A104.21.7.2052026-02-16 → 2026-06-04 · 9 obs

○ 2016-04-16 19:04:38
● 2026-02-16 15:26:28
○ 2026-02-16 21:50:58
● 2026-02-26 00:02:42
● 2026-05-29 14:40:30
○ 2026-06-03 19:26:20
○ 2026-06-04 00:28:06
● 2026-06-04 04:13:10
● 2026-06-04 09:52:02

●A172.67.130.902026-02-16 → 2026-06-04 · 9 obs

○A188.114.96.02026-02-16 → 2026-06-03 · 7 obs

○ 2026-02-16 15:26:28
● 2026-02-16 21:50:58
○ 2026-02-26 00:02:42
○ 2026-05-29 14:40:30
● 2026-06-03 19:26:20
○ 2026-06-04 00:28:06
○ 2026-06-04 09:52:02

○A188.114.96.42026-06-04 → 2026-06-04 · 4 obs

○ 2026-06-03 19:26:20
● 2026-06-04 00:28:06
○ 2026-06-04 04:13:10
○ 2026-06-04 09:52:02

○A188.114.97.02026-02-16 → 2026-06-03 · 7 obs

○ 2026-02-16 15:26:28
● 2026-02-16 21:50:58
○ 2026-02-26 00:02:42
○ 2026-05-29 14:40:30
● 2026-06-03 19:26:20
○ 2026-06-04 00:28:06
○ 2026-06-04 09:52:02

○A188.114.97.42026-06-04 → 2026-06-04 · 4 obs

○ 2026-06-03 19:26:20
● 2026-06-04 00:28:06
○ 2026-06-04 04:13:10
○ 2026-06-04 09:52:02

●A2606:4700:3030::6815:7cd2026-02-16 → 2026-06-04 · 9 obs

●A2606:4700:3032::ac43:825a2026-02-16 → 2026-06-04 · 9 obs

○A2a06:98c1:3120::2026-02-16 → 2026-06-03 · 7 obs

○ 2026-02-16 15:26:28
● 2026-02-16 21:50:58
○ 2026-02-26 00:02:42
○ 2026-05-29 14:40:30
● 2026-06-03 19:26:20
○ 2026-06-04 00:28:06
○ 2026-06-04 09:52:02

○A2a06:98c1:3120::42026-06-04 → 2026-06-04 · 4 obs

○ 2026-06-03 19:26:20
● 2026-06-04 00:28:06
○ 2026-06-04 04:13:10
○ 2026-06-04 09:52:02

○A2a06:98c1:3121::2026-02-16 → 2026-06-03 · 7 obs

○ 2026-02-16 15:26:28
● 2026-02-16 21:50:58
○ 2026-02-26 00:02:42
○ 2026-05-29 14:40:30
● 2026-06-03 19:26:20
○ 2026-06-04 00:28:06
○ 2026-06-04 09:52:02

○A2a06:98c1:3121::42026-06-04 → 2026-06-04 · 4 obs

○ 2026-06-03 19:26:20
● 2026-06-04 00:28:06
○ 2026-06-04 04:13:10
○ 2026-06-04 09:52:02

○A52.4.102.1072016-04-16 → 2016-04-16 · 4 obs

○ 2016-01-24 15:18:38
● 2016-04-16 19:04:38
○ 2026-02-16 15:26:28
○ 2026-06-04 09:52:02

○A81.0.236.1222015-08-03 → 2016-01-24 · 4 obs

● 2015-08-03 16:21:24
● 2016-01-24 15:18:38
○ 2016-04-16 19:04:38
○ 2026-06-04 09:52:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, c.ns.nic.cz, b.ns.nic.cz, d.ns.nic.cz	-
code.cz	amy.ns.cloudflare.com, graham.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.101

NS records: amy.ns.cloudflare.com, graham.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1310ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.7.205, 172.67.130.90`
AAAA	2	`2606:4700:3032::ac43:825a, 2606:4700:3030::6815:7cd`
NS	2	`amy.ns.cloudflare.com, graham.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 87), route3.mx.cloudflare.net (pri: 93)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`amy.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

code.cz has 4 IP addresses: 104.21.7.205, 172.67.130.90, 2606:4700:3030::6815:7cd and 2606:4700:3032::ac43:825a.

pop.easyscore.com, fcbchat.ir, qqwin4dloli.fun and two other host names share IP numbers with code.cz.

Name Servers

The NS records for code.cz delegate to amy.ns.cloudflare.com and graham.ns.cloudflare.com.

code.cz uses the same name servers as several other domains — among them (0x786e7878)live.org, deliciouslysprinkled.com, 9chan.tw and two more.

There is at least partial name server overlap between code.cz and other domains — atburst.com, adrastage.com, secondsphere.org and two more among them.

These name servers are routinely deployed together with the name servers byron.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

amy.ns.cloudflare.com maps to six IP addresses: 108.162.192.101, 172.64.32.101, 173.245.58.101 and three others.

graham.ns.cloudflare.com maps to six IP addresses: 108.162.193.171, 172.64.33.171, 173.245.59.171 and three others.

Mail Servers

Incoming mail for code.cz is delivered via three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

code.cz has at least partial mail server overlap with other domains such as mobill.pl, polymaking.com, msdeals.in and two more.

Hostnames that resolve to 6 IP addresses:

route1.mx.cloudflare.net maps to six IP addresses: 162.159.205.11, 162.159.205.12, 162.159.205.13 and three others.

route2.mx.cloudflare.net maps to six IP addresses: 162.159.205.17, 162.159.205.18, 162.159.205.19 and three others.

route3.mx.cloudflare.net maps to six IP addresses: 162.159.205.23, 162.159.205.24, 162.159.205.25 and three others.