`developer.cz`

DNSSEC	⚠️ Not signed
A	194.212.89.122^{🇨🇿 TMOBILE-CZ194.212.0.0/16 T-Mobile Czech Republic a.s.}
NS	`ns.sprinx.cz` ⭐
		A	194.212.89.20^{🇨🇿 TMOBILE-CZ194.212.0.0/16 T-Mobile Czech Republic a.s.}
			PTR	`ns.sprinx.cz`
NS	`smudla.svamberk.cz`
		A	80.188.171.249^{🇨🇿 O2-CZECH-REPUBLIC80.188.128.0/17 CZ.CZNET}
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c08::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bi-in-f27.1e100.net`
		A	142.251.167.26^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
		A	2607:f8b0:4023:1015::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yudfwta-in-f27.1e100.net`
		A	172.253.135.27^{🇺🇸 Google172.253.135.0/24}
			PTR	`yudfwta-in-f27.1e100.net`
MX	`aspmx2.googlemail.com`⁽³⁰⁾
		A	2607:f8b0:4023:2801::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`lcausi-in-f27.1e100.net`
		A	192.178.128.27^{🇺🇸 Google192.178.128.0/24}
			PTR	`lcausi-in-f27.1e100.net`
SOA	`ns.sprinx.cz`postmaster@sprinx.cz 1998-01-29 #43

`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=1775931432

WOT: SAFE (60/100)

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developer.cz

Similar names

DNS History

7 records (6 active, 1 former)

●NSns.sprinx.cz2015-06-26 → 2026-04-11 · 2 obs

● 2015-06-26 05:51:46
● 2026-04-11 18:53:08

●NSsmudla.svamberk.cz2015-06-26 → 2026-04-11 · 2 obs

● 2015-06-26 05:51:46
● 2026-04-11 18:53:08

●MXalt2.aspmx.l.google.com2015-06-26 → 2026-04-11 · 2 obs

● 2015-06-26 05:51:46
● 2026-04-11 18:53:08

●MXaspmx.l.google.com2015-06-26 → 2026-04-11 · 2 obs

● 2015-06-26 05:51:46
● 2026-04-11 18:53:08

●MXaspmx2.googlemail.com2015-06-26 → 2026-04-11 · 2 obs

● 2015-06-26 05:51:46
● 2026-04-11 18:53:08

●A194.212.89.1222026-03-02 → 2026-04-11 · 3 obs

○ 2017-10-23 23:58:32
● 2026-03-02 22:11:10
● 2026-04-11 18:53:08

○A194.212.89.862015-06-26 → 2017-10-23 · 4 obs

● 2015-06-26 05:51:46
● 2017-10-23 23:58:32
○ 2026-03-02 22:11:10
○ 2026-04-11 18:53:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
developer.cz	ns.sprinx.cz, smudla.svamberk.cz	1 record

✅ Authoritative Response

Server:80.188.171.249

NS records: ns.sprinx.cz, smudla.svamberk.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for developer.cz (unsigned zone)

⏱️ Timing

Total: 3059ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`194.212.89.122`
NS	2	`smudla.svamberk.cz, ns.sprinx.cz`
MX	3	`alt2.aspmx.l.google.com (pri: 20), aspmx2.googlemail.com (pri: 30)...`
SOA	1	`ns.sprinx.cz postmaster.sprinx.cz`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns.sprinx.cz)

Analysis

IP Addresses

developer.cz resolves to one IP number: 194.212.89.122.

other host names including sprinx.net, ferovapujcka.cz, sprinx.eu, www.noga.cz and www.sprinxcrm.com share IP numbers with developer.cz.

Name Servers

developer.cz is delegated to two name servers ns.sprinx.cz and smudla.svamberk.cz.

developer.cz shares the same name server setup as other domains, for instance noga.cz, tvujmobil.cz, touchcue.com, benefit-plus.cz and proexport.cz.