ctr.dk - dns.ninja
ctr.dk
dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | b.nic.dk ⭐ | ||||||
| NS | c.nic.dk | ||||||
| NS | h.nic.dk | ||||||
| NS | l.nic.dk | ||||||
| NS | s.nic.dk | ||||||
| NS | t.nic.dk | ||||||
| TXT | DK zone updateEpoch 1784849761localtime Fri Jul 24 01:36:01 2026gmtime Thu Ju... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1784849761 | ||||||
Subdomains
Same first word
Similar names
DNS History
16 records (7 active, 9 former)
●NSns1.simply.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
○NSns1.surf-town.net2015-06-14 → 2018-08-18 · 5 obs
● 2015-06-14 01:17:10
● 2018-08-18 20:27:22
○ 2026-02-26 06:30:04
○ 2026-07-23 23:39:22
●NSns2.simply.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
○NSns2.surf-town.net2015-06-14 → 2018-08-18 · 5 obs
● 2015-06-14 01:17:10
● 2018-08-18 20:27:22
○ 2026-02-26 06:30:04
○ 2026-07-23 23:39:22
○NSns24.inet.tele.dk2008-10-30 → 2008-10-30 · 3 obs
○ 2015-06-14 01:17:10
○ 2026-07-23 23:39:22
○NSns25.inet.tele.dk2008-10-30 → 2008-10-30 · 3 obs
○ 2015-06-14 01:17:10
○ 2026-07-23 23:39:22
●NSns3.simply.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
○NSns3.surf-town.net2015-06-14 → 2018-08-18 · 5 obs
● 2015-06-14 01:17:10
● 2018-08-18 20:27:22
○ 2026-02-26 06:30:04
○ 2026-07-23 23:39:22
●NSns4.simply.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
○MXctrnt10.ctr.dk2008-10-30 → 2008-10-30 · 3 obs
○ 2015-06-14 01:17:10
○ 2026-07-23 23:39:22
○MXmail.ctr.dk2008-10-30 → 2018-08-18 · 4 obs
● 2018-08-18 20:27:22
○ 2026-02-26 06:30:04
○ 2026-07-23 23:39:22
○MXmail.dk.net2008-10-30 → 2008-10-30 · 3 obs
○ 2015-06-14 01:17:10
○ 2026-07-23 23:39:22
●MXmx-01-eu-central-1.prod.hydra.sophos.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
●MXmx-02-eu-central-1.prod.hydra.sophos.com2026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
○A212.97.132.2162015-06-14 → 2018-08-18 · 5 obs
● 2015-06-14 01:17:10
● 2018-08-18 20:27:22
○ 2026-02-26 06:30:04
○ 2026-07-23 23:39:22
●A95.216.30.52026-02-26 → 2026-07-23 · 3 obs
● 2026-02-26 06:30:04
● 2026-07-23 23:39:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | s.nic.dk, c.nic.dk, b.nic.dk, h.nic.dk... | 12 records |
| ctr.dk | ns1.simply.com, ns2.simply.com, ns3.simply.com, ns4.simply.com | - |
✅ Authoritative Response
Server:91.197.248.78
NS records: ns1.simply.com, ns2.simply.com, ns3.simply.com, ns4.simply.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1375ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 95.216.30.5 |
| NS | 4 | ns1.simply.com, ns4.simply.com... |
| MX | 2 | mx-01-eu-central-1.prod.hydra.sophos.com, mx-02-eu-central-1.prod.hydra.sophos.com |
| TXT | 10 | _globalsign-domain-verification=Bhl856-T, _globalsign-domain-verification=lxYbTg25... |
| SOA | 1 | ns1.simply.com hostmaster.simply.com |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (b.nic.dk, c.nic.dk, h.nic.dk...)
Analysis
Hierarchy
ctr.dk serves as the parent of mail.ctr.dk and ctrnt10.ctr.dk.
IP Addresses
ctr.dk has exactly one IP address — 95.216.30.5.
hillerod.dk, www.hillerod.dk, eksponent.com plus two other host names have IP numbers in common with ctr.dk.
Name Servers
Four name servers handle the delegation for ctr.dk: ns1.simply.com, ns2.simply.com, ns3.simply.com and ns4.simply.com.
At least some of ctr.dk's name servers are shared with other domains, for example hurtigere.dk, businesstransport.dk, vebab.nu and two more.
It is common for these name servers to be used in conjunction with the name servers ns1.unoeuro.com, ns2.unoeuro.com and ns3.unoeuro.com.
Host names pointing to two IP addresses:
ns1.simply.com points to 91.197.248.78 and 2a02:2339:1:15c::4562:4562.
ns2.simply.com points to 185.25.141.15 and 2a02:2339:4006:101::4562:4562.
Host names resolving to a single IP address:
ns3.simply.com points to 91.197.248.79.
ns4.simply.com points to 91.197.248.80.
Mail Servers
ctr.dk uses two mail servers, mx-01-eu-central-1.prod.hydra.sophos.com and mx-02-eu-central-1.prod.hydra.sophos.com.
The mail server setup of ctr.dk matches that of other domains such as beemster.be, iks-kunststoffe-geldern.de, ibktropic.com and two others.
At least some of the mail servers used by ctr.dk are shared with other domains: vn-dadi.de, emlix.at, embedded-linux.info and two others among them.
mx-01-eu-central-1.prod.hydra.sophos.com and mx-02-eu-central-1.prod.hydra.sophos.com each resolve to two IP addresses: 18.185.156.212 and 52.28.5.44.
mx-01-eu-central-1.prod.hydra.sophos.com and mx-02-eu-central-1.prod.hydra.sophos.com are host names that each point to 18.185.156.212 IP addresses.
mx-01-eu-central-1.prod.hydra.sophos.com and mx-02-eu-central-1.prod.hydra.sophos.com are host names that each point to 52.28.5.44 IP addresses.