sertek.dk - robtex.com
sertek.dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.simply.com ⭐ | ||||||
| A | 2a02:2339:1:15c::4562:4562🇩🇰 team-blue-denmark2a02:2339::/36 | ||||||
| PTR | ns1.simply.com | ||||||
| A | 91.197.248.78🇩🇰 team-blue-denmark91.197.248.0/22 | ||||||
| PTR | ns1.simply.com | ||||||
| NS | ns2.simply.com | ||||||
| A | 2a02:2339:4006:101::4562:4562🇩🇰 team-blue-denmark2a02:2339:4000::/34 | ||||||
| PTR | ns2.simply.com | ||||||
| A | 185.25.141.15🇩🇰 team-blue-denmark185.25.141.0/24 Zitcom A/S | ||||||
| PTR | ns2.simply.com | ||||||
| NS | ns3.simply.com | ||||||
| A | 91.197.248.79🇩🇰 team-blue-denmark91.197.248.0/22 | ||||||
| PTR | ns3.simply.com | ||||||
| SOA | ns1.simply.comhostmaster@simply.com 2026-06-16 #0 | ||||||
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 1785448081localtime Thu Jul 30 23:48:01 2026gmtime Thu Ju... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1785448081 | ||||||
Same first word
sertek.nl |
sertek.dk |
sertek.at |
sertek.es |
sertek.com.bo |
sertek.com |
sertek.com.tr |
sertek.cn |
sertek.de |
sertek.net |
sertek.eu |
sertek.com.tw |
sertek.ch |
sertek.com.au |
Similar names
DNS History
9 records (3 active, 6 former)
○NSns.dandomain.dk2015-06-14 → 2017-06-19 · 4 obs
● 2017-06-19 22:50:24
○ 2026-06-09 22:31:58
○ 2026-07-30 22:35:10
●NSns1.simply.com2026-06-09 → 2026-07-30 · 3 obs
● 2026-06-09 22:31:58
● 2026-07-30 22:35:10
○NSns2.dandomain.dk2015-06-14 → 2017-06-19 · 4 obs
● 2017-06-19 22:50:24
○ 2026-06-09 22:31:58
○ 2026-07-30 22:35:10
●NSns2.simply.com2026-06-09 → 2026-07-30 · 3 obs
● 2026-06-09 22:31:58
● 2026-07-30 22:35:10
○NSns3.dandomain.dk2015-06-14 → 2017-06-19 · 4 obs
● 2017-06-19 22:50:24
○ 2026-06-09 22:31:58
○ 2026-07-30 22:35:10
●NSns3.simply.com2026-06-09 → 2026-07-30 · 3 obs
● 2026-06-09 22:31:58
● 2026-07-30 22:35:10
○MXmail.sertek.dk2015-06-14 → 2017-06-19 · 4 obs
● 2017-06-19 22:50:24
○ 2026-06-09 22:31:58
○ 2026-07-30 22:35:10
○MXmx.simply.com2026-06-09 → 2026-06-15 · 5 obs
● 2026-06-09 22:31:58
● 2026-06-15 08:10:38
○ 2026-06-18 21:26:42
○ 2026-07-30 22:35:10
○A194.150.113.152015-06-14 → 2017-06-19 · 4 obs
● 2017-06-19 22:50:24
○ 2026-06-09 22:31:58
○ 2026-07-30 22:35:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | h.nic.dk, t.nic.dk, b.nic.dk, c.nic.dk... | - |
| sertek.dk | ns1.simply.com, ns2.simply.com, ns3.simply.com | - |
✅ Authoritative Response
Server:91.197.248.79
NS records: ns1.simply.com, ns2.simply.com, ns3.simply.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 877ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns2.simply.com, ns3.simply.com... |
| SOA | 1 | ns1.simply.com hostmaster.simply.com |
Analysis
Name Servers
Three name servers are authoritative for sertek.dk: ns1.simply.com, ns2.simply.com and ns3.simply.com.
sertek.dk shares at least some of its name servers with other domains, including dine-penge.dk, tresk.se, kasinoeventyr.dk and two others.
These name servers are frequently seen alongside the name servers ns4.simply.com.
Host names with two IP numbers:
ns1.simply.com maps to two IP addresses — 91.197.248.78 and 2a02:2339:1:15c::4562:4562.
ns2.simply.com maps to two IP addresses — 185.25.141.15 and 2a02:2339:4006:101::4562:4562.
Host names pointing to a single IP address:
ns3.simply.com points to the IP address 91.197.248.79.