`p-centrum.cz`

DNSSEC	⚠️ Not signed
A	62.109.151.111^{🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
NS	`ns1.ignum.com` ⭐ ⚠️ Not in parent delegation
		A	2a00:1e40:a:53::5^{🇸🇰 IGNUM-AS2a00:1e40:a::/48}
			PTR	`ns1-bra.core.webglobe.com`
		A	185.65.223.35^{🇸🇰 IGNUM-AS185.65.223.0/24}
			PTR	`ns1-bra.core.webglobe.com`
NS	`ns1.fofrhosting.cz` ⚠️ Not in zone NS records
		A	62.109.151.111^{🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
NS	`ns2.fofrhosting.cz` ⚠️ Not in zone NS records
		A	62.109.151.111^{🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
NS	`ns2.ignum.cz` ⚠️ Not in parent delegation
		A	2001:1ab0:7e1e:2::5^{🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`ns2-prg.core.webglobe.com`
		A	217.31.48.201^{🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/}
			PTR	`ns2-prg.core.webglobe.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c29::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadum-in-f27.1e100.net`
		A	142.251.163.26^{🇺🇸 Google142.251.163.0/24}
			PTR	`wv-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		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}
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		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}
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
TXT	`v=spf1 a mx ip4:217.170.96.4 ip4:217.170.96.4 ?all`
TXT	`google-site-verification=1rQP2IfNtT1uy8GkyACu_SvTqf4aFY3smreKOA5917M`
TXT	`MS=ms75063210`
SOA	`ns1.ignum.com`postmaster@p-centrum.cz 2024-09-17 #2

`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=1784576839

WOT: SAFE (63/100)

Subdomains

mail.p-centrum.cz

Same first word

p-centrum.cz

DNS History

15 records (10 active, 5 former)

●NSns1.fofrhosting.cz2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●NSns1.ignum.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

○NSns1.p-centrum.cz2015-07-23 → 2017-09-27 · 4 obs

● 2015-07-23 08:29:24
● 2017-09-27 17:00:58
○ 2026-02-22 11:34:18
○ 2026-07-20 20:42:24

●NSns2.fofrhosting.cz2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●NSns2.ignum.cz2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

○NSns2.p-centrum.cz2015-07-23 → 2017-09-27 · 4 obs

● 2015-07-23 08:29:24
● 2017-09-27 17:00:58
○ 2026-02-22 11:34:18
○ 2026-07-20 20:42:24

●MXalt1.aspmx.l.google.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●MXalt2.aspmx.l.google.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●MXalt3.aspmx.l.google.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●MXalt4.aspmx.l.google.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

●MXaspmx.l.google.com2026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

○MXmail.p-centrum.cz2015-07-23 → 2017-09-27 · 4 obs

● 2015-07-23 08:29:24
● 2017-09-27 17:00:58
○ 2026-02-22 11:34:18
○ 2026-07-20 20:42:24

○A217.170.96.42015-07-23 → 2016-10-19 · 4 obs

● 2015-07-23 08:29:24
● 2016-10-19 01:00:12
○ 2017-09-27 17:00:58
○ 2026-07-20 20:42:24

○A217.170.99.1702017-09-27 → 2017-09-27 · 4 obs

○ 2016-10-19 01:00:12
● 2017-09-27 17:00:58
○ 2026-02-22 11:34:18
○ 2026-07-20 20:42:24

●A62.109.151.1112026-02-22 → 2026-07-20 · 3 obs

○ 2017-09-27 17:00:58
● 2026-02-22 11:34:18
● 2026-07-20 20:42:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	d.ns.nic.cz, c.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz	-
p-centrum.cz	ns1.fofrhosting.cz, ns2.fofrhosting.cz	4 records

✅ Authoritative Response

Server:217.31.48.201

NS records: ns1.fofrhosting.cz, ns2.fofrhosting.cz

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for p-centrum.cz (unsigned zone)

⏱️ Timing

Total: 680ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`62.109.151.111`
NS	2	`ns2.ignum.cz, ns1.ignum.com`
MX	5	`aspmx.l.google.com (pri: 1), alt1.aspmx.l.google.com (pri: 5)...`
TXT	3	`v=spf1 a mx ip4:217.170.96.4 ip4:217.170, MS=ms75063210...`
SOA	1	`ns1.ignum.com postmaster.p-centrum.cz`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.fofrhosting.cz, ns1.fofrhosting.cz, ns2.fofrhosting.cz...)

Analysis

Hierarchy

p-centrum.cz is the parent zone for mail.p-centrum.cz.

IP Addresses

p-centrum.cz has exactly one IP address — 62.109.151.111.

ns1.dopravavolomouci.cz, ns2.ns1.fofrhosting.cz, ns1.tenzovahy.cz plus two other host names have IP numbers in common with p-centrum.cz.

Name Servers

Four name servers handle the delegation for p-centrum.cz: ns1.ignum.com, ns1.fofrhosting.cz, ns2.fofrhosting.cz and ns2.ignum.cz.

p-centrum.cz partially shares its NS delegation with several other domains, including outlet.cz, plasmastream.eu, spektrometry.eu and two others.

The name servers ns1.ignum.eu, ns2.ignum.eu, ns3.ignum.eu and ns1.webcloud.cz are often found in use alongside these name servers.

Host names pointing to two IP addresses:

The A records for ns1.ignum.com return 185.65.223.35 and 2a00:1e40:a:53::5.

The A records for ns2.ignum.cz return 217.31.48.201 and 2001:1ab0:7e1e:2::5.

Host names resolving to a single IP address:

ns1.fofrhosting.cz resolves to the IP address 62.109.151.111.

ns2.fofrhosting.cz resolves to the IP address 62.109.151.111.

ns1.fofrhosting.cz and ns2.fofrhosting.cz each have 62.109.151.111 IP addresses.

Mail Servers

Mail for p-centrum.cz is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by p-centrum.cz are shared with other domains: nutreduca.cl, atlanticelectricsupply.com, inmelo.app and two others among them.

These mail servers often appear in conjunction with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx3.googlemail.com and aspmx2.googlemail.com.

Host names pointing to two IP addresses:

The A records for aspmx.l.google.com return 142.251.163.26 and 2607:f8b0:4004:c29::1b.

The A records for alt1.aspmx.l.google.com return 108.177.123.26 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1a.

The A records for alt3.aspmx.l.google.com return 192.178.223.26 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1a.