mail.cssol.de - dns.ninja

`mail.cssol.de`

CNAME	`cssol.de`
DNSSEC	⚠️ Not signed
A	2a01:238:43bc:9400:7150:793e:253f:7d75^{🇩🇪 STRATO2a01:238::/29 Strato Rechenzentrum}
		PTR	`h2684791.stratoserver.net`
A	85.214.51.78^{🇩🇪 STRATO85.214.0.0/15 AG}
NS	`ns4.stratoserver.net` ⭐
		A	2001:8d8:fe:53:5747:2a74:d:32^{🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
		A	217.160.80.159^{🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific}
			PTR	`ns4.stratoserver.net`
NS	`ns3.stratoserver.net`
		A	2607:f1c0:fe:53:185:132:34:159^{🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
			PTR	`ns3.stratoserver.net`
		A	185.132.34.159^{🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)}
			PTR	`ns3.stratoserver.net`
MX	`cssol-de.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca27::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-beup281cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr5p281cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::1^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr4p281cu03101.inbound.protection.outlook.com`
		A	2a01:111:f403:ca2d::2^{🇩🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-fr6p281cu00202.inbound.protection.outlook.com`
		A	52.101.168.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-beup281cu00100.inbound.protection.outlook.com`
		A	52.101.170.0^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr5p281cu00500.inbound.protection.outlook.com`
		A	52.101.170.1^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr4p281cu03101.inbound.protection.outlook.com`
		A	52.101.170.2^{🇩🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-fr6p281cu00202.inbound.protection.outlook.com`
TXT	`MS=ms17213571`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`ns4.stratoserver.net`hostmaster@strato-rz.de 2020-06-11 #42

`cssol.de`

	DNSSEC	⚠️ Not signed
	A	2a01:238:43bc:9400:7150:793e:253f:7d75^{🇩🇪 STRATO2a01:238::/29 Strato Rechenzentrum}
	A	85.214.51.78^{🇩🇪 STRATO85.214.0.0/15 AG}
	NS	`ns4.stratoserver.net` ⭐
	NS	`ns3.stratoserver.net`
	MX	`cssol-de.mail.protection.outlook.com` ⭐
	TXT	`MS=ms17213571`
	TXT	`v=spf1 include:spf.protection.outlook.com -all`
	SOA	`ns4.stratoserver.net`hostmaster@strato-rz.de 2020-06-11 #42

Previously MX for

cssol.de

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DNS History

2 records (1 active, 1 former)

○A62.112.137.2422015-06-14 → 2016-08-11 · 4 obs

● 2015-06-14 15:03:32
● 2016-08-11 13:37:36
○ 2026-08-10 18:39:50
○ 2026-08-10 18:39:52

●CNAMEcssol.de2026-08-10 → 2026-08-10 · 2 obs

● 2026-08-10 18:39:50
● 2026-08-10 18:39:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
cssol.de	ns3.stratoserver.net, ns4.stratoserver.net	-

✅ Authoritative Response

Server:185.132.34.159

NS records: ns3.stratoserver.net, ns4.stratoserver.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cssol.de (unsigned zone)

⏱️ Timing

Total: 826ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`cssol.de`

Analysis

IP Addresses

mail.cssol.de points to the IP addresses 85.214.51.78 and 2a01:238:43bc:9400:7150:793e:253f:7d75

Two other host names, along with cuppit.de, cssol.de and h2684791.stratoserver.net, also share IP numbers with mail.cssol.de.

Name Servers

Two name servers handle the delegation for mail.cssol.de: ns3.stratoserver.net and ns4.stratoserver.net.

mail.cssol.de shares its NS records with other domains, for example wostok.at, zeppelinserver.de, j-intra.de and two others.

ns3.stratoserver.net and ns4.stratoserver.net both carry two IP addresses. The A records for ns3.stratoserver.net are 185.132.34.159 and 2607:f1c0:fe:53:185:132:34:159; the A records for ns4.stratoserver.net are 217.160.80.159 and 2001:8d8:fe:53:5747:2a74:d:32.

Mail Servers

The sole mail server for mail.cssol.de is cssol-de.mail.protection.outlook.com.

Mail server setup for mail.cssol.de matches that of other domains, among them cssol.de.

With 8 IP addresses total, cssol-de.mail.protection.outlook.com resolves to 52.101.168.0, 52.101.170.0, 52.101.170.1 and 5 others.