`mx.2d.cz`

DNSSEC	⚠️ Not signed
A	2a00:19a0:3:75:0:d9c6:7565:1^{🇨🇿 ZONER-AS2a00:19a0::/32 ZONER-IPV6-NET}
		PTR	`mayo.2d.cz`
A	217.198.117.101^{🇨🇿 ZONER-AS217.198.112.0/20 ZONER-NET}

`2d.cz`

	DNSSEC	🔒 Signed (DS record present)
	A	2a00:19a0:3:7a:0:d9c6:7a8b:1^{🇨🇿 ZONER-AS2a00:19a0::/32 ZONER-IPV6-NET}
	A	217.198.122.139^{🇨🇿 ZONER-AS217.198.112.0/20 ZONER-NET}
	NS	`ns1.regzone.cz` ⭐
	NS	`ns1.regzone.de`
	NS	`ns1.regzone.info`
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽²⁰⁾
	MX	`alt2.aspmx.l.google.com`⁽²⁰⁾
	MX	`aspmx2.googlemail.com`⁽³⁰⁾
	MX	`aspmx3.googlemail.com`⁽³⁰⁾
	MX	`aspmx4.googlemail.com`⁽³⁰⁾
	MX	`aspmx5.googlemail.com`⁽³⁰⁾
	TXT	`mailjet._d326981e`
	TXT	`v=spf1 a mx include:_spf.mlsend.com include:_spf.google.com ~all`
	SOA	`ns1.regzone.cz`administrator@czechia.cz 2026-04-25 #2

Same first word

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mx.email

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mx.agency

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mx.myftp.org

mx.duckdns.org

mx.kinghost.net

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mx.center

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DNS History

3 records (2 active, 1 former)

●A217.198.117.1012026-03-04 → 2026-05-13 · 2 obs

● 2026-03-04 13:47:14
● 2026-05-13 21:01:08

●A2a00:19a0:3:75:0:d9c6:7565:12026-03-04 → 2026-05-13 · 2 obs

● 2026-03-04 13:47:14
● 2026-05-13 21:01:08

○CNAMEmayo.2d.cz2017-09-18 → 2017-09-18 · 3 obs

● 2017-09-18 17:37:30
○ 2026-03-04 13:47:14
○ 2026-05-13 21:01:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cz	b.ns.nic.cz, c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz	-
2d.cz	ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info	2 records

✅ Authoritative Response

Server:81.0.233.10

NS records: ns1.regzone.cz, ns1.regzone.de, ns1.regzone.info

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1062ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`217.198.117.101`
AAAA	1	`2a00:19a0:3:75:0:d9c6:7565:1`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.regzone.cz, ns1.regzone.cz)

Analysis

IP Addresses

mx.2d.cz resolves to two IP numbers: 2a00:19a0:3:75:0:d9c6:7565:1 and 217.198.117.101.

other host names including nesvilskykruzek.com, sioux.2d.cz, smytec.com, ilovebrno.cz and eibel.com share IP numbers with mx.2d.cz.

mx.2d.cz - robtex.com

mx.2d.cz

2d.cz