`mx2.goodmail.cz`

DNSSEC	⚠️ Not signed
A	31.31.78.118^{🇨🇿 WEDOS31.31.72.0/21 Internet, a.s.}
		PTR	`pn.colakov.com`
		PTR	`mx2.goodmail.cz`

`goodmail.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	31.31.78.118^{🇨🇿 WEDOS31.31.72.0/21 Internet, a.s.}
	NS	`ns1.ignum.com` ⭐
	NS	`ns2.ignum.cz`
	MX	`mx2.goodmail.cz` ⭐
	MX	`mx1.goodmail.cz`⁽²⁵⁾
	TXT	`v=spf1 ip4:31.31.78.79 ip4:31.31.78.118 -all`
	SOA	`ns1.ignum.com`hostmaster@ignum.cz 2026-04-07 #1

PTR for

118.78.31.31.in-addr.arpa

MX for

colakov.com

goodmail.cz

Same first word

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DNS History

2 records (1 active, 1 former)

○A185.8.236.522017-06-24 → 2017-06-24 · 3 obs

● 2017-06-24 05:14:26
○ 2026-02-16 04:25:04
○ 2026-04-12 10:47:18

●A31.31.78.1182026-02-16 → 2026-04-12 · 3 obs

○ 2017-06-24 05:14:26
● 2026-02-16 04:25:04
● 2026-04-12 10:47:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	a.ns.nic.cz, b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz	-
goodmail.cz	ns1.ignum.com, ns2.ignum.cz	2 records

✅ Authoritative Response

Server:217.31.48.201

NS records: ns1.ignum.com, ns2.ignum.cz

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1301ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.31.78.118`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns2.ignum.cz, ns2.ignum.cz)

Analysis

Mail Server Role

mx2.goodmail.cz serves as the mail server for colakov.com and goodmail.cz.

mx1.goodmail.cz often serves as a mail server in conjunction with mx2.goodmail.cz.

IP Addresses

mx2.goodmail.cz points to IP number: 31.31.78.118.

Other host names such as colakov.com, mx.goodmail.cz, mx3.goodmail.cz, goodmail.cz and pn.colakov.com share IPs with mx2.goodmail.cz.

mx2.goodmail.cz - robtex.com

mx2.goodmail.cz

goodmail.cz