learn2code.cz - dns.ninja

`learn2code.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:1df2^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:9601^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.29.242^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.1^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lewis.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c9f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lewis.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lewis.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lewis.ns.cloudflare.com`
		A	108.162.195.159^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lewis.ns.cloudflare.com`
		A	162.159.44.159^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lewis.ns.cloudflare.com`
		A	172.64.35.159^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lewis.ns.cloudflare.com`
NS	`lina.ns.cloudflare.com`
		A	2606:4700:50::adf5:3abb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lina.ns.cloudflare.com`
		A	108.162.192.187^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	172.64.32.187^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
		A	173.245.58.187^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lina.ns.cloudflare.com`
MX	`mx1.websupport.sk` ⭐
		A	37.9.169.110^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.168.0/21 Websupport, s.r.o.}
			PTR	`mail-proxymxphy-8.websupport.sk`
MX	`mx2.websupport.sk`⁽¹⁰⁰⁾
		A	37.9.169.112^{🇸🇰 WEBSUPPORT-SRO-SK-AS37.9.168.0/21 Websupport, s.r.o.}
			PTR	`mail-proxymxphy-6.websupport.sk`
TXT	`facebook-domain-verification=e2awutx2ytzwfxmh42yd3qfun4y855`
TXT	`spf2.0/pra a mx include:_sid.websupport.sk ?all`
TXT	`v=spf1 a mx include:_spf.websupport.sk ?all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.29.242, 172.67.150.1
		IPv6 hints	2606:4700:3036::6815:1df2, 2606:4700:3036::ac43:9601
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=116, name=cloudflare-ech.com
SOA	`lewis.ns.cloudflare.com`dns@cloudflare.com serial=2404860248

`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=1781218041

Subdomains

www.learn2code.cz

mailin2.learn2code.cz

mailin1.learn2code.cz

Same first word

learn2code.it

learn2code.de

learn2code.asia

learn2code.dev

learn2code.cz

learn2code.net

learn2code.com

learn2code.org

learn2code.live

learn2code.sk

learn2code.eu

Similar names

code2learn.com

code2learn.it

DNS History

18 records (8 active, 10 former)

●NSlewis.ns.cloudflare.com2026-03-01 → 2026-06-11 · 3 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-06-11 23:09:12

●NSlina.ns.cloudflare.com2026-03-01 → 2026-06-11 · 3 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-06-11 23:09:12

○NSns1.websupport.sk2015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

○NSns2.websupport.sk2015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

○NSns3.websupport.sk2015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

○MXmailin1.learn2code.cz2015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

○MXmailin2.learn2code.cz2015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

●MXmx1.websupport.sk2026-03-01 → 2026-06-11 · 3 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-06-11 23:09:12

●MXmx2.websupport.sk2026-03-01 → 2026-06-11 · 3 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-06-11 23:09:12

●A104.21.29.2422026-03-01 → 2026-06-11 · 11 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
○ 2026-03-03 00:36:18
● 2026-03-05 11:55:18
● 2026-03-06 16:54:22
○ 2026-03-06 17:45:26
● 2026-03-25 06:06:32
● 2026-04-11 11:16:56
○ 2026-04-12 14:25:30
● 2026-04-13 12:19:16
● 2026-06-11 23:09:12

○A172.64.80.12026-03-03 → 2026-03-06 · 7 obs

○ 2026-03-01 05:20:04
● 2026-03-03 00:36:18
○ 2026-03-05 11:55:18
○ 2026-03-06 16:54:22
● 2026-03-06 17:45:26
○ 2026-03-25 06:06:32
○ 2026-06-11 23:09:12

●A172.67.150.12026-03-01 → 2026-06-11 · 11 obs

○A174.129.25.1702015-07-03 → 2017-03-21 · 4 obs

● 2015-07-03 06:44:50
● 2017-03-21 05:33:30
○ 2026-03-01 05:20:04
○ 2026-06-11 23:09:12

○A188.114.96.02026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-11 11:16:56
● 2026-04-12 14:25:30
○ 2026-04-13 12:19:16
○ 2026-06-11 23:09:12

○A188.114.97.02026-04-12 → 2026-04-12 · 4 obs

○ 2026-04-11 11:16:56
● 2026-04-12 14:25:30
○ 2026-04-13 12:19:16
○ 2026-06-11 23:09:12

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-06 → 2026-03-06 · 4 obs

○ 2026-03-06 16:54:22
● 2026-03-06 17:45:26
○ 2026-03-25 06:06:32
○ 2026-06-11 23:09:12

●A2606:4700:3036::6815:1df22026-03-01 → 2026-06-11 · 6 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-03-06 16:54:22
○ 2026-03-06 17:45:26
● 2026-03-25 06:06:32
● 2026-06-11 23:09:12

●A2606:4700:3036::ac43:96012026-03-01 → 2026-06-11 · 6 obs

○ 2017-03-21 05:33:30
● 2026-03-01 05:20:04
● 2026-03-06 16:54:22
○ 2026-03-06 17:45:26
● 2026-03-25 06:06:32
● 2026-06-11 23:09:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
learn2code.cz	lina.ns.cloudflare.com, lewis.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.159

NS records: lina.ns.cloudflare.com, lewis.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learn2code.cz (unsigned zone)

⏱️ Timing

Total: 1250ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.150.1, 104.21.29.242`
AAAA	2	`2606:4700:3036::ac43:9601, 2606:4700:3036::6815:1df2`
NS	2	`lewis.ns.cloudflare.com, lina.ns.cloudflare.com`
MX	2	`mx1.websupport.sk (pri: 10), mx2.websupport.sk (pri: 100)`
TXT	3	`facebook-domain-verification=e2awutx2ytz, spf2.0/pra a mx include:_sid.websupport....`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lewis.ns.cloudflare.com dns.cloudflare.c`

Analysis

Hierarchy

learn2code.cz is the parent domain of www.learn2code.cz, mailin2.learn2code.cz and mailin1.learn2code.cz.

IP Addresses

learn2code.cz points to four IP numbers: 104.21.29.242, 172.67.150.1, 2606:4700:3036::6815:1df2 and 2606:4700:3036::ac43:9601.

Among the host names that share IP numbers with learn2code.cz are mdyhds.net, ahjdyp.com, medicthings.com and two others.

Name Servers

learn2code.cz is delegated to two name servers: lewis.ns.cloudflare.com and lina.ns.cloudflare.com.

learn2code.cz has the same name server delegation as a number of other domains, such as cheongyi.com, ucreativa.com, observedpath.com and two more.

learn2code.cz shares at least some of its name servers with other domains, including dailybots.com, (0x706f726e)pictures.pro, open-circle.org and two others.

These name servers are frequently seen alongside the name servers sevki.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

lewis.ns.cloudflare.com resolves to 108.162.195.159, 162.159.44.159, 172.64.35.159 and 3 other IP addresses.

lina.ns.cloudflare.com resolves to 108.162.192.187, 172.64.32.187, 173.245.58.187 and 3 other IP addresses.

Mail Servers

The MX records for learn2code.cz point to two mail servers: mx1.websupport.sk and mx2.websupport.sk.

learn2code.cz has the same mail server arrangement as a number of other domains, for example guashatherapy.sk, internationaldayofradiology.com, bbc5.sk and two more.

learn2code.cz shares at least some of its mail servers with other domains — for example legaltrans.sk, inlingua-nitra.sk, eurovkm.sk and two more.

mx1.websupport.sk and mx2.websupport.sk each resolve to one IP number: mx1.websupport.sk points to 37.9.169.110 and mx2.websupport.sk points to 37.9.169.112.