devlo.cz - dns.ninja

`devlo.cz`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:8c99^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:4932^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.73.50^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.140.153^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aiden.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b37^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aiden.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c137^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aiden.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2137^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aiden.ns.cloudflare.com`
		A	108.162.193.55^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aiden.ns.cloudflare.com`
		A	172.64.33.55^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aiden.ns.cloudflare.com`
		A	173.245.59.55^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aiden.ns.cloudflare.com`
NS	`pola.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`pola.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`pola.ns.cloudflare.com`
		A	108.162.192.214^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	172.64.32.214^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
		A	173.245.58.214^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`pola.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c06::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f26.1e100.net`
		A	64.233.180.27^{🇺🇸 Google64.233.180.0/24}
MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`aspmx3.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`aspmx4.googlemail.com`⁽³⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`aspmx5.googlemail.com`⁽³⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`v=spf1 include:_spf.google.com ip4:185.64.216.97 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.73.50, 172.67.140.153
		IPv6 hints	2606:4700:3031::ac43:8c99, 2606:4700:3034::6815:4932
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=145, name=cloudflare-ech.com
SOA	`aiden.ns.cloudflare.com`dns@cloudflare.com serial=2406804549

`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=1784726243

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DNS History

18 records (13 active, 5 former)

●NSaiden.ns.cloudflare.com2026-02-18 → 2026-07-22 · 3 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-07-22 13:59:16

○NSns1.websupport.sk2015-06-10 → 2016-05-06 · 4 obs

● 2015-06-10 22:44:08
● 2016-05-06 02:08:44
○ 2026-02-18 04:14:08
○ 2026-07-22 13:59:16

○NSns2.websupport.sk2015-06-10 → 2016-05-06 · 4 obs

● 2015-06-10 22:44:08
● 2016-05-06 02:08:44
○ 2026-02-18 04:14:08
○ 2026-07-22 13:59:16

○NSns3.websupport.sk2015-06-10 → 2016-05-06 · 4 obs

● 2015-06-10 22:44:08
● 2016-05-06 02:08:44
○ 2026-02-18 04:14:08
○ 2026-07-22 13:59:16

●NSpola.ns.cloudflare.com2026-02-18 → 2026-07-22 · 3 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-07-22 13:59:16

●MXalt1.aspmx.l.google.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXalt2.aspmx.l.google.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXaspmx.l.google.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXaspmx2.googlemail.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXaspmx3.googlemail.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXaspmx4.googlemail.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●MXaspmx5.googlemail.com2015-06-10 → 2026-07-22 · 2 obs

● 2015-06-10 22:44:08
● 2026-07-22 13:59:16

●A104.21.73.502026-02-18 → 2026-07-22 · 3 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-07-22 13:59:16

●A172.67.140.1532026-02-18 → 2026-07-22 · 3 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-07-22 13:59:16

●A2606:4700:3031::ac43:8c992026-07-13 → 2026-07-22 · 3 obs

○ 2026-06-09 18:10:20
● 2026-07-13 12:04:10
● 2026-07-22 13:59:16

●A2606:4700:3034::6815:49322026-02-18 → 2026-07-22 · 3 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-07-22 13:59:16

○A2606:4700:3035::ac43:8c992026-02-18 → 2026-06-09 · 5 obs

○ 2016-05-06 02:08:44
● 2026-02-18 04:14:08
● 2026-06-09 18:10:20
○ 2026-07-13 12:04:10
○ 2026-07-22 13:59:16

○A37.9.175.132015-06-10 → 2016-05-06 · 4 obs

● 2015-06-10 22:44:08
● 2016-05-06 02:08:44
○ 2026-02-18 04:14:08
○ 2026-07-22 13:59:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz	-
devlo.cz	pola.ns.cloudflare.com, aiden.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.214

NS records: pola.ns.cloudflare.com, aiden.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for devlo.cz (unsigned zone)

⏱️ Timing

Total: 1310ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.140.153, 104.21.73.50`
AAAA	2	`2606:4700:3034::6815:4932, 2606:4700:3031::ac43:8c99`
NS	2	`aiden.ns.cloudflare.com, pola.ns.cloudflare.com`
MX	7	`aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)...`
TXT	1	`v=spf1 include:_spf.google.com ip4:185.6`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aiden.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

devlo.cz has four IP addresses: 104.21.73.50, 172.67.140.153, 2606:4700:3031::ac43:8c99 and 2606:4700:3034::6815:4932.

Among the host names that share IP numbers with devlo.cz are pgcosul.shop, comoinvestirnoexterior.com, seokoc.com and two others.

Name Servers

devlo.cz has two authoritative name servers — aiden.ns.cloudflare.com and pola.ns.cloudflare.com.

devlo.cz has the same name server delegation as a number of other domains, such as kupli.ro, prectu.cz, vseprohudbu.cz and two more.

devlo.cz has at least partial name server overlap with other domains, such as 918aa.com, technozooo.com, houcomm.com and two others.

It is common to find these name servers paired with the name servers zoe.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

aiden.ns.cloudflare.com points to 108.162.193.55, 172.64.33.55, 173.245.59.55 and 3 other IP addresses.

pola.ns.cloudflare.com points to 108.162.192.214, 172.64.32.214, 173.245.58.214 and 3 other IP addresses.

Mail Servers

Mail for devlo.cz is routed through 7 mail servers, including aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and 4 other.

devlo.cz shares at least some of its mail servers with other domains — for example elfmeter.de, towersoft.net, sifaat.com and two more.

It is common to find these mail servers paired with mail servers aspmx.l.google.com, alt2.aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more.

Hosts with two IP numbers each:

aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1a.

aspmx3.googlemail.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1b.

aspmx4.googlemail.com resolves to 192.178.223.26 and 2a00:1450:4009:c0f::1b.

aspmx5.googlemail.com resolves to 172.253.157.26 and 2a00:1450:400c:c23::1a.

aspmx.l.google.com resolves to 64.233.180.27 and 2607:f8b0:4004:c06::1a.

alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com resolves to 172.253.116.26 and 2a00:1450:400b:c02::1a.

The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 108.177.123.27 IP addresses.

The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 172.253.116.26 IP addresses.