cool4school.de - robtex.com
cool4school.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.195.241.232🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | sl1.sedo.com ⭐ | ||||||
| A | 91.195.240.173🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| NS | sl2.sedo.com | ||||||
| A | 91.195.241.173🇩🇪 SEDO91.195.240.0/23 -NET-PI | ||||||
| MX | localhost ⭐ | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | sl1.sedo.comhostmaster@sedo.de 2018-05-16 #1 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1774707659 | ||||||
Same first word
Similar names
DNS History
13 records (4 active, 9 former)
○NSns1.eurodns.com2015-11-11 → 2017-02-17 · 5 obs
● 2015-11-11 19:13:04
● 2017-02-17 19:13:26
○ 2026-03-15 21:12:24
○ 2026-03-28 14:21:14
○NSns1.ns-serve.net2015-07-10 → 2015-07-10 · 3 obs
○ 2015-11-11 19:13:04
○ 2026-03-28 14:21:14
○NSns2.eurodns.com2015-11-11 → 2017-02-17 · 5 obs
● 2015-11-11 19:13:04
● 2017-02-17 19:13:26
○ 2026-03-15 21:12:24
○ 2026-03-28 14:21:14
○NSns2.ns-serve.net2015-07-10 → 2015-07-10 · 3 obs
○ 2015-11-11 19:13:04
○ 2026-03-28 14:21:14
○NSns3.eurodns.com2015-11-11 → 2017-02-17 · 5 obs
● 2015-11-11 19:13:04
● 2017-02-17 19:13:26
○ 2026-03-15 21:12:24
○ 2026-03-28 14:21:14
○NSns4.eurodns.com2015-11-11 → 2017-02-17 · 5 obs
● 2015-11-11 19:13:04
● 2017-02-17 19:13:26
○ 2026-03-15 21:12:24
○ 2026-03-28 14:21:14
●NSsl1.sedo.com2026-03-15 → 2026-03-28 · 3 obs
● 2026-03-15 21:12:24
● 2026-03-28 14:21:14
●NSsl2.sedo.com2026-03-15 → 2026-03-28 · 3 obs
● 2026-03-15 21:12:24
● 2026-03-28 14:21:14
●MXlocalhost2026-03-15 → 2026-03-28 · 3 obs
● 2026-03-15 21:12:24
● 2026-03-28 14:21:14
○MXserver06.skywebhosting.de2015-07-10 → 2015-07-10 · 3 obs
○ 2015-11-11 19:13:04
○ 2026-03-28 14:21:14
○A185.53.177.202015-11-11 → 2017-02-17 · 5 obs
● 2015-11-11 19:13:04
● 2017-02-17 19:13:26
○ 2026-03-15 21:12:24
○ 2026-03-28 14:21:14
○A46.38.248.1662015-07-10 → 2015-07-10 · 3 obs
○ 2015-11-11 19:13:04
○ 2026-03-28 14:21:14
●A91.195.241.2322026-03-15 → 2026-03-28 · 3 obs
● 2026-03-15 21:12:24
● 2026-03-28 14:21:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| cool4school.de | sl2.sedo.com, sl1.sedo.com | - |
✅ Authoritative Response
Server:91.195.241.173
NS records: sl2.sedo.com, sl1.sedo.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cool4school.de (unsigned zone)
⏱️ Timing
Total: 704ms | 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
cool4school.de resolves to a single IP address: 91.195.241.232.
Other host names including avstore.de, myfram.de, easycook.fr, davkon.de and simpleway.de share IP numbers with cool4school.de.
Name Servers
cool4school.de's delegation uses two name servers, sl1.sedo.com and sl2.sedo.com.
cool4school.de shares the same name server setup as other domains, for example pilotschool.eu, cmail.hannibanny.blogage.de, mail.octogram.de, best-protect.de and vvmineral.de.
Host names with a single IP:
sl1.sedo.com points to 91.195.240.173.
sl2.sedo.com points to 91.195.241.173.
Mail Servers
cool4school.de is handled by a single mail server, localhost.
cool4school.de shares its mail server setup with other domains, including uclit.com, aixio.de, video.6v7.com, nrw.findex.de and www.gv.al.