cotutor.net - dns.ninja
cotutor.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 85.13.142.175🇩🇪 NMM-AS85.13.142.0/24 Neue Medien Muennich | ||||||
| PTR | dd43222.kasserver.com | ||||||
| NS | ns5.kasserver.com ⭐ | ||||||
| A | 85.13.128.3🇩🇪 NMM-AS85.13.128.0/24 Neue Medien Muennich | ||||||
| PTR | ns5.kasserver.com | ||||||
| NS | ns6.kasserver.com | ||||||
| A | 85.13.159.101🇩🇪 NMM-AS85.13.159.0/24 Neue Medien Muennich | ||||||
| PTR | ns6.kasserver.com | ||||||
| MX | w01d3dab.kasserver.com ⭐ | ||||||
| A | 85.13.142.175🇩🇪 NMM-AS85.13.142.0/24 Neue Medien Muennich | ||||||
| PTR | dd43222.kasserver.com | ||||||
| TXT | v=spf1 a mx include:spf.kasserver.com ~all | ||||||
| SOA | ns5.kasserver.comhostmaster@kasserver.com serial=2606020200 | ||||||
net
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1782680505 | ||||||
Same first word
Similar names
touroct.com |
rotocut.eu |
rotocut.de |
rotocut.it |
rootcut.com |
courtot.com |
tutorco.com |
oturcot.ca |
rotocut.com |
cotrout.org |
troutco.us |
coutrot.com |
ctotour.ru |
cotrout.com |
troutco.com |
octutor.com |
curotto.com |
DNS History
6 records (4 active, 2 former)
●NSns5.kasserver.com2017-01-04 → 2026-06-28 · 2 obs
● 2026-06-28 21:13:34
●NSns6.kasserver.com2017-01-04 → 2026-06-28 · 2 obs
● 2026-06-28 21:13:34
○MXw0144802.kasserver.com2017-01-04 → 2017-12-01 · 4 obs
● 2017-12-01 15:28:48
○ 2026-03-09 04:54:24
○ 2026-06-28 21:13:34
●MXw01d3dab.kasserver.com2026-03-09 → 2026-06-28 · 3 obs
● 2026-03-09 04:54:24
● 2026-06-28 21:13:34
●A85.13.142.1752026-03-09 → 2026-06-28 · 3 obs
● 2026-03-09 04:54:24
● 2026-06-28 21:13:34
○A92.51.135.842017-01-04 → 2017-12-01 · 4 obs
● 2017-12-01 15:28:48
○ 2026-03-09 04:54:24
○ 2026-06-28 21:13:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net... | - |
| cotutor.net | ns5.kasserver.com, ns6.kasserver.com | - |
✅ Authoritative Response
Server:85.13.159.101
NS records: ns5.kasserver.com, ns6.kasserver.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cotutor.net (unsigned zone)
⏱️ Timing
Total: 420ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.13.142.175 |
| NS | 2 | ns5.kasserver.com, ns6.kasserver.com |
| MX | 1 | w01d3dab.kasserver.com (pri: 10) |
| TXT | 1 | v=spf1 a mx include:spf.kasserver.com ~a |
| SOA | 1 | ns5.kasserver.com hostmaster.kasserver.c |
Analysis
IP Addresses
cotutor.net has exactly one IP address — 85.13.142.175.
v141597.kasserver.com, w010156d.kasserver.com, nrw-server.de plus two other host names have IP numbers in common with cotutor.net.
Name Servers
DNS delegation for cotutor.net points to two name servers: ns5.kasserver.com and ns6.kasserver.com.
The name server configuration of cotutor.net is shared with other domains, for instance vorsorge-arzt.de, seebuell.de, 123nichtraucher-werden.de and two others.
cotutor.net has at least partial name server overlap with other domains, such as martin-riesner.de, helmsauerundkollegen.de, embedded-journal.de and two others.
It is common to find these name servers paired with the name servers a-dns-service.de, ns3.kas-dns-server.de, ns3.ai-dns.de and ns5.name-server-kas.de.
ns5.kasserver.com directs to 85.13.128.3 and ns6.kasserver.com directs to 85.13.159.101; each host name points to exactly one IP number.
Mail Servers
cotutor.net uses one mail server — w01d3dab.kasserver.com.
cotutor.net uses the same mail servers as other domains, including co-tutor.de.
w01d3dab.kasserver.com has exactly one IP number: 85.13.142.175.