`mail.classmate.de`

DNSSEC	⚠️ Not signed
A	91.195.241.232^{🇩🇪 SEDO91.195.240.0/23 -NET-PI}
		PTR	`ip-91-195-241-232.defastlink.net`
NS	`sl1.sedo.com` ⭐ ⚠️ Not in parent delegation
		A	91.195.240.173^{🇩🇪 SEDO91.195.240.0/23 -NET-PI}
			PTR	`ip-91-195-240-173.defastlink.net`
NS	`sl2.sedo.com` ⚠️ Not in parent delegation
		A	91.195.241.173^{🇩🇪 SEDO91.195.240.0/23 -NET-PI}
			PTR	`ip-91-195-241-173.defastlink.net`
MX	`localhost` ⭐ 🔒
		A	`::1`
		A	127.0.0.1
TXT	`v=spf1 -all`
SOA	`sl1.sedo.com`hostmaster@sedo.de 2018-05-16 #1

`classmate.de`

	DNSSEC	⚠️ Not signed
	A	91.195.241.232^{🇩🇪 SEDO91.195.240.0/23 -NET-PI}
	NS	`sl1.sedo.com` ⭐
	NS	`sl2.sedo.com`
	MX	`localhost` ⭐ 🔒
	TXT	`v=spf1 -all`
	SOA	`sl1.sedo.com`hostmaster@sedo.de 2018-05-16 #1

Same first word

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DNS History

9 records (4 active, 5 former)

○NSns1.sedoparking.com2015-11-24 → 2016-07-10 · 3 obs

● 2015-11-24 15:29:56
● 2016-07-10 16:39:12
○ 2026-03-23 02:48:58

○NSns2.sedoparking.com2015-11-24 → 2016-07-10 · 3 obs

● 2015-11-24 15:29:56
● 2016-07-10 16:39:12
○ 2026-03-23 02:48:58

●NSsl1.sedo.com2026-03-23 → 2026-03-23 · 2 obs

○ 2016-07-10 16:39:12
● 2026-03-23 02:48:58

●NSsl2.sedo.com2026-03-23 → 2026-03-23 · 2 obs

○ 2016-07-10 16:39:12
● 2026-03-23 02:48:58

●MXlocalhost2026-03-23 → 2026-03-23 · 2 obs

○ 2016-07-10 16:39:12
● 2026-03-23 02:48:58

○MXmail.nickstel.com2015-11-24 → 2016-07-10 · 3 obs

● 2015-11-24 15:29:56
● 2016-07-10 16:39:12
○ 2026-03-23 02:48:58

○A72.52.4.912015-11-24 → 2016-07-10 · 4 obs

○ 2015-08-05 01:50:36
● 2015-11-24 15:29:56
● 2016-07-10 16:39:12
○ 2026-03-23 02:48:58

○A83.149.68.242015-08-05 → 2015-08-05 · 3 obs

● 2015-08-05 01:50:36
○ 2015-11-24 15:29:56
○ 2026-03-23 02:48:58

●A91.195.241.2322026-03-23 → 2026-03-23 · 2 obs

○ 2016-07-10 16:39:12
● 2026-03-23 02:48:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
classmate.de	sl2.sedo.com, sl1.sedo.com	-

✅ Authoritative Response

Server:91.195.240.173

NS records: sl2.sedo.com, sl1.sedo.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classmate.de (unsigned zone)

⏱️ Timing

Total: 1002ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.195.241.232`
NS	2	`sl2.sedo.com, sl1.sedo.com`
MX	1	`localhost (pri: 0)`
TXT	1	`v=spf1 -all`
SOA	1	`sl1.sedo.com hostmaster.sedo.de`

Analysis

IP Addresses

mail.classmate.de points to a single IP number: 91.195.241.232.

other host names for instance zenpixel.de, seedlink.eu, gigol.de, iman.fr and frenchwine.eu share IP numbers with mail.classmate.de.

Name Servers

mail.classmate.de is delegated to two name servers: sl1.sedo.com and sl2.sedo.com.

mail.classmate.de shares the same name server setup as other domains, for example cavity.eu, dreamcorner.de, oris.in, virtualcraft.de and aux.in.

mail.classmate.de at least partially shares its name servers with other domains, for instance 1stforbusiness.co.uk.

These name servers are commonly used with the name servers eczm2gtf.verify.hn.

Host names with one IP number:

The host sl1.sedo.com points to 91.195.240.173 and the host sl2.sedo.com points to 91.195.241.173.

Mail Servers

mail.classmate.de is handled by a single mail server, localhost.

mail.classmate.de shares the same mail server setup as other domains, for instance smtp.catbase.de, boldes.com, akyrd.com, 2fax.de and wap.filmnight.com.

Host localhost resolves to two IPs: ::1 and 127.0.0.1.

mail.classmate.de - robtex.com