classmate.de - dns.ninja

classmate.de

DNSSEC⚠️ Not signed
A91.195.241.232🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSsl1.sedo.com
A91.195.240.173🇩🇪 SEDO91.195.240.0/23 -NET-PI
NSsl2.sedo.com
A91.195.241.173🇩🇪 SEDO91.195.240.0/23 -NET-PI
MXlocalhost
TXTv=spf1 -all
SOAsl1.sedo.comhostmaster@sedo.de 2018-05-16 #1

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de
NSa.nic.de
NSl.de.net ⚠️ Not in parent delegation
NSn.de.net ⚠️ Not in parent delegation
NSs.de.net ⚠️ Not in parent delegation
NSz.nic.de
SOAf.nic.dedns-operations@denic.de serial=1781431512

Subdomains

Same first word

Similar names

DNS History

15 records (4 active, 11 former)

20162017201820192020202120222023202420252026NSsl1.sedo.comsl2.sedo.comns1.netzhoster.dens1.sedoparking.comns2.netzhoster.dens2.sedoparking.comns3.netzhoster.deMXlocalhostmail.nickstel.commx01.wk-serv.netmx02.wk-serv.netA91.195.241.23272.52.4.12272.52.4.9183.149.68.24
NSns1.netzhoster.de2015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
NSns1.sedoparking.com2015-10-20 → 2017-05-30 · 5 obs
○ 2015-06-04 10:50:24
● 2015-10-20 06:01:46
● 2017-05-30 18:51:10
○ 2026-03-17 09:03:48
○ 2026-06-14 10:17:10
NSns2.netzhoster.de2015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
NSns2.sedoparking.com2015-10-20 → 2017-05-30 · 5 obs
○ 2015-06-04 10:50:24
● 2015-10-20 06:01:46
● 2017-05-30 18:51:10
○ 2026-03-17 09:03:48
○ 2026-06-14 10:17:10
NSns3.netzhoster.de2015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
NSsl1.sedo.com2026-03-17 → 2026-06-14 · 3 obs
○ 2017-05-30 18:51:10
● 2026-03-17 09:03:48
● 2026-06-14 10:17:10
NSsl2.sedo.com2026-03-17 → 2026-06-14 · 3 obs
○ 2017-05-30 18:51:10
● 2026-03-17 09:03:48
● 2026-06-14 10:17:10
MXlocalhost2017-05-30 → 2026-06-14 · 3 obs
○ 2016-07-26 13:48:42
● 2017-05-30 18:51:10
● 2026-06-14 10:17:10
MXmail.nickstel.com2015-10-20 → 2016-07-26 · 5 obs
○ 2015-06-04 10:50:24
● 2015-10-20 06:01:46
● 2016-07-26 13:48:42
○ 2017-05-30 18:51:10
○ 2026-06-14 10:17:10
MXmx01.wk-serv.net2015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
MXmx02.wk-serv.net2015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
A72.52.4.1222017-05-30 → 2017-05-30 · 4 obs
○ 2016-07-26 13:48:42
● 2017-05-30 18:51:10
○ 2026-03-17 09:03:48
○ 2026-06-14 10:17:10
A72.52.4.912015-10-20 → 2016-07-26 · 5 obs
○ 2015-06-04 10:50:24
● 2015-10-20 06:01:46
● 2016-07-26 13:48:42
○ 2017-05-30 18:51:10
○ 2026-06-14 10:17:10
A83.149.68.242015-06-04 → 2015-06-04 · 3 obs
● 2015-06-04 10:50:24
○ 2015-10-20 06:01:46
○ 2026-06-14 10:17:10
A91.195.241.2322026-03-17 → 2026-06-14 · 3 obs
○ 2017-05-30 18:51:10
● 2026-03-17 09:03:48
● 2026-06-14 10:17:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dez.nic.de, f.nic.de, a.nic.de-
classmate.desl1.sedo.com, sl2.sedo.com-

✅ Authoritative Response

Server:91.195.240.173

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classmate.de (unsigned zone)

⏱️ Timing

Total: 3934ms | Queries: -

📄 Records

TypeCountSample Data
A191.195.241.232
NS2sl2.sedo.com, sl1.sedo.com
MX1localhost (pri: 0)
TXT1v=spf1 -all
SOA1sl1.sedo.com hostmaster.sedo.de

Analysis

Hierarchy

The domain mail.classmate.de falls under the parent classmate.de.

IP Addresses

classmate.de has exactly one IP address — 91.195.241.232.

conciergeprive.ch, www.synesthesia.online, otherland.eu plus two other host names have IP numbers in common with classmate.de.

Name Servers

classmate.de has two authoritative name servers — sl1.sedo.com and sl2.sedo.com.

The name server configuration of classmate.de is shared with other domains, for instance goodtime.de, addtime.de, wellness-zahnarzt.de and two others.

The name servers for classmate.de overlap at least partially with those of other domains — for example mail.my-bike.eu.

Each of sl1.sedo.com and sl2.sedo.com has one IP address: sl1.sedo.com uses 91.195.240.173 and sl2.sedo.com uses 91.195.241.173.

Mail Servers

classmate.de uses one mail server — localhost.

The mail server setup of classmate.de matches that of other domains such as www.rct.info, trifinder.com, us-f.com and two others.