`mail.casknook.com`

DNSSEC	⚠️ Not signed
A	81.169.206.193^{🇩🇪 STRATO81.169.128.0/17 AG}
		PTR	`dns1.4u-hosting.com`

`casknook.com`

	DNSSEC	⚠️ Not signed
	A	81.169.206.193^{🇩🇪 STRATO81.169.128.0/17 AG}
	NS	`dns1.4u-hosting.com` ⭐
	NS	`dns2.4u-hosting.com`
	MX	`mail.casknook.com` ⭐
	TXT	`v=spf1 +a +mx +a:u-online.nl`
	SOA	`dns1.4u-hosting.com`ckn19341@gmail.com 2022-08-31 #5

MX for

casknook.com

Same first word

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DNS History

2 records (1 active, 1 former)

●A81.169.206.1932026-04-12 → 2026-04-13 · 3 obs

○ 2016-05-09 00:58:52
● 2026-04-12 18:26:52
● 2026-04-13 02:22:52

○A85.214.156.2462015-11-17 → 2016-05-09 · 4 obs

● 2015-11-17 07:27:30
● 2016-05-09 00:58:52
○ 2026-04-12 18:26:52
○ 2026-04-13 02:22:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net...	-
casknook.com	dns1.4u-hosting.com, dns2.4u-hosting.com	2 records

✅ Authoritative Response

Server:85.214.116.88

NS records: dns1.4u-hosting.com, dns2.4u-hosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for casknook.com (unsigned zone)

⏱️ Timing

Total: 530ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`81.169.206.193`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns1.4u-hosting.com, dns2.4u-hosting.com)

Analysis

Mail Server Role

mail.casknook.com is the mail server for casknook.com.

IP Addresses

mail.casknook.com points to a single IP number: 81.169.206.193.

other host names for instance enzyme-energy.nl, u-online.com, knook.org, mail.knook.org and casknook.com share IP numbers with mail.casknook.com.

mail.casknook.com - robtex.com