mail.coding4u.at - dns.ninja

`mail.coding4u.at`

CNAME	`coding4u.at`
DNSSEC	⚠️ Not signed
A	138.199.137.102^{🇩🇪 Hetzner138.199.128.0/17 HETZNER-DC}
		PTR	`host127.dwhost.net`
NS	`dns1.dwhost.net` ⭐
		A	85.159.213.38^{🇬🇧 AKAMAI-LINODE-AP85.159.208.0/21 Akamai Technologies}
			PTR	`dns1.dwhost.net`
NS	`dns2.dwhost.net`
		A	94.237.111.102^{🇳🇱 UPCLOUD94.237.108.0/22 -NL-AMS1-NET}
			PTR	`dns2.dwhost.net`
NS	`dns3.dwhost.net`
		A	162.55.68.152^{🇩🇪 Hetzner162.55.0.0/16 HETZNER-DC}
			PTR	`dns3.dwhost.net`
MX	`mail.coding4u.at` ⭐
TXT	`v=spf1 ip4:138.199.137.102 ip4:188.40.21.44 +a +mx ~all`
SOA	`dns1.dwhost.net`admin@dreamweb.rs 2026-07-28 #1

`coding4u.at`

	DNSSEC	⚠️ Not signed
	A	138.199.137.102^{🇩🇪 Hetzner138.199.128.0/17 HETZNER-DC}
	NS	`dns1.dwhost.net` ⭐
	NS	`dns2.dwhost.net`
	NS	`dns3.dwhost.net`
	MX	`mail.coding4u.at` ⭐
	TXT	`v=spf1 ip4:138.199.137.102 ip4:188.40.21.44 +a +mx ~all`
	SOA	`dns1.dwhost.net`admin@dreamweb.rs 2026-07-28 #1

MX for

coding4u.at

Same first word

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DNS History

1 record (1 active, 0 former)

●CNAMEcoding4u.at2026-04-13 → 2026-08-06 · 2 obs

● 2026-04-13 17:17:48
● 2026-08-06 05:27:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
at	d.ns.at, j.ns.at, n.ns.at, r.ns.at...	-
coding4u.at	dns3.dwhost.net, dns2.dwhost.net, dns1.dwhost.net	-

✅ Authoritative Response

Server:85.159.213.38

NS records: dns3.dwhost.net, dns2.dwhost.net, dns1.dwhost.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coding4u.at (unsigned zone)

⏱️ Timing

Total: 815ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`coding4u.at`

Analysis

Mail Server Role

mail.coding4u.at serves as a mail server for coding4u.at.

IP Addresses

mail.coding4u.at points to a single IP number: 138.199.137.102.

Additional host names — limelightmechanics.com, coding4u.at, pro.in.rs and two others — share IP numbers with mail.coding4u.at.

Name Servers

DNS for mail.coding4u.at is handled by three authoritative name servers: dns1.dwhost.net, dns2.dwhost.net and dns3.dwhost.net.

mail.coding4u.at has at least partial name server overlap with other domains, such as sopos.org.rs, mazalic.rs, kopi-nis.com and two others.

It is common to find these name servers paired with the name servers ns1.dwhost.net, ns2.dwhost.net, ns11.dwhost.net and ns12.dwhost.net.

dns1.dwhost.net, dns2.dwhost.net and dns3.dwhost.net all have one IP address each — dns1.dwhost.net directs to 85.159.213.38, dns2.dwhost.net directs to 94.237.111.102 and dns3.dwhost.net directs to 162.55.68.152.

Mail Servers

mail.coding4u.at has a single mail server: mail.coding4u.at itself.

mail.coding4u.at shares its mail server setup with other domains, such as coding4u.at.