`mailserver.up2day.nl`

DNSSEC	⚠️ Not signed
A	77.237.245.117^{🇩🇪 CONTABO77.237.240.0/21}
		PTR	`mailserver.up2day.nl`
MX	`smtp.rzone.de` ⭐
		A	2a01:238:20a:202:50f0::2097^{🇩🇪 STRATO2a01:238:20a::/48 Strato AG}
			PTR	`smtp.rzone.de`
		A	81.169.145.98^{🇩🇪 STRATO81.169.144.0/22 AG}
			PTR	`smtp.rzone.de`

`up2day.nl`

	DNSSEC	⚠️ Not signed
	A	77.237.245.117^{🇩🇪 CONTABO77.237.240.0/21}
	NS	`docks20.rzone.de` ⭐
	NS	`shades15.rzone.de`
	MX	`mailserver.up2day.nl` ⭐
	MX	`relay.rzone.de`⁽¹⁰⁰⁾
	TXT	`v=spf1 mx ~all`
	SOA	`docks20.rzone.de`hostmaster@strato-rz.de 2024-09-28 #0

PTR for

117.245.237.77.in-addr.arpa

MX for

up2day.nl

Same first word

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Similar names

DNS History

2 records (2 active, 0 former)

●MXsmtp.rzone.de2026-04-12 → 2026-04-12 · 2 obs

● 2026-04-12 10:10:02
● 2026-04-12 14:03:02

●A77.237.245.1172026-04-12 → 2026-04-12 · 2 obs

● 2026-04-12 10:10:02
● 2026-04-12 14:03:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
up2day.nl	docks20.rzone.de, shades15.rzone.de	-

✅ Authoritative Response

Server:185.132.34.142

NS records: docks20.rzone.de, shades15.rzone.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 927ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`77.237.245.117`
MX	1	`smtp.rzone.de (pri: 5)`

Analysis

Mail Server Role

mailserver.up2day.nl acts as a mail server for up2day.nl.

relay.rzone.de is commonly used as a mail server in conjunction with mailserver.up2day.nl.

IP Addresses

mailserver.up2day.nl points to a single IP number: 77.237.245.117.

Other host names, for instance up2day.nl, share IP numbers with mailserver.up2day.nl.

Mail Servers

The mail server for mailserver.up2day.nl is smtp.rzone.de.

mailserver.up2day.nl shares the same mail server setup as other domains, including d-tale.nl, ampalasherratillas.com, compte-util.fr, reint.es and genide.es.

Host name smtp.rzone.de resolves to two IPs: 2a01:238:20a:202:50f0::2097 and 81.169.145.98.

mailserver.up2day.nl - robtex.com