itstack.dk - robtex.com
itstack.dk
| DNSSEC | ⚠️ Not signed | ||||||
| A | 185.21.41.45🇩🇰 team-blue-denmark185.21.40.0/22 ZITCOM A/S | ||||||
| PTR | linux15.curanet.dk | ||||||
| NS | ns1.curanet.dk ⭐ | ||||||
| A | 2a02:2339:4006:108::123🇩🇰 team-blue-denmark2a02:2339:4000::/34 | ||||||
| PTR | ns1.curanet.dk | ||||||
| A | 185.25.141.12🇩🇰 team-blue-denmark185.25.141.0/24 Zitcom A/S | ||||||
| PTR | ns1.curanet.dk | ||||||
| NS | ns2.curanet.dk | ||||||
| A | 2a02:2339:1:10f::123:123🇩🇰 team-blue-denmark2a02:2339::/36 | ||||||
| PTR | ns2.curanet.dk | ||||||
| A | 91.197.248.75🇩🇰 team-blue-denmark91.197.248.0/22 | ||||||
| PTR | ns2.curanet.dk | ||||||
| MX | mx1.onlinemail.io ⭐ | ||||||
| A | 185.21.42.12🇩🇰 team-blue-denmark185.21.40.0/22 ZITCOM A/S | ||||||
| PTR | mx1.onlinemail.io | ||||||
| MX | mx2.onlinemail.io(20) | ||||||
| A | 46.36.208.16🇩🇰 team-blue-denmark46.36.208.0/21 | ||||||
| PTR | mx2.onlinemail.io | ||||||
| TXT | openai-domain-verification=dv-1xSkOR6deJoWjrfSeY9UYf5o | ||||||
| TXT | v=spf1 include:_spf.google.com include:_spf.mlsend.com include:spf.onlinemail... | ||||||
| TXT | stripe-verification=53ce3d94621138db757defa38d80637bc91b63d6b7be32ee078138c05... | ||||||
| TXT | google-site-verification=UuuRIdVMDtYjV5jSK2XGrxsIjpVQ1e7J_daPStSqXaw | ||||||
| TXT | mailerlite-domain-verification=d8d3a9def616bdd30fa5eddfcc51f67540e245d9 | ||||||
| SOA | ns1.curanet.dkhostmaster@curanet.dk 2026-06-15 #2 | ||||||
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 1783188901localtime Sat Jul 4 20:15:01 2026gmtime Sat Ju... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1783188901 | ||||||
Previously MX for
itstack.dk |
Subdomains
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
○NShost.karlog-it.dk2019-02-28 → 2019-02-28 · 3 obs
○ 2026-02-28 05:12:18
○ 2026-07-04 18:22:08
●NSns1.curanet.dk2026-02-28 → 2026-07-04 · 3 obs
● 2026-02-28 05:12:18
● 2026-07-04 18:22:08
○NSns1.karlog-it.dk2019-02-28 → 2019-02-28 · 3 obs
○ 2026-02-28 05:12:18
○ 2026-07-04 18:22:08
●NSns2.curanet.dk2026-02-28 → 2026-07-04 · 3 obs
● 2026-02-28 05:12:18
● 2026-07-04 18:22:08
○MXitstack.dk2019-02-28 → 2019-02-28 · 3 obs
○ 2026-02-28 05:12:18
○ 2026-07-04 18:22:08
●MXmx1.onlinemail.io2026-02-28 → 2026-07-04 · 3 obs
● 2026-02-28 05:12:18
● 2026-07-04 18:22:08
●MXmx2.onlinemail.io2026-02-28 → 2026-07-04 · 3 obs
● 2026-02-28 05:12:18
● 2026-07-04 18:22:08
●A185.21.41.452026-02-28 → 2026-07-04 · 3 obs
● 2026-02-28 05:12:18
● 2026-07-04 18:22:08
○A194.135.81.1362019-02-28 → 2019-02-28 · 3 obs
○ 2026-02-28 05:12:18
○ 2026-07-04 18:22:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | b.nic.dk, s.nic.dk, c.nic.dk, l.nic.dk... | - |
| itstack.dk | ns1.curanet.dk, ns2.curanet.dk | - |
✅ Authoritative Response
Server:185.25.141.12
NS records: ns1.curanet.dk, ns2.curanet.dk
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1814ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.21.41.45 |
| NS | 2 | ns2.curanet.dk, ns1.curanet.dk |
| MX | 2 | mx1.onlinemail.io (pri: 10), mx2.onlinemail.io (pri: 20) |
| TXT | 5 | v=spf1 include:_spf.google.com include:_, stripe-verification=53ce3d94621138db757d... |
| SOA | 1 | ns1.curanet.dk hostmaster.curanet.dk |
Analysis
Hierarchy
itstack.dk serves as the parent of ns1.itstack.dk and ns2.itstack.dk.
IP Addresses
itstack.dk has exactly one IP address — 185.21.41.45.
boidavidsen.dk, zantio.dk, lbk.dk plus two other host names have IP numbers in common with itstack.dk.
Name Servers
The NS records for itstack.dk delegate to ns1.curanet.dk and ns2.curanet.dk.
The name server configuration of itstack.dk is shared with other domains, for instance toloroklub.dk, sejtraek.dk, kaffebar.dk and two others.
The name servers of itstack.dk overlap at least partially with those of other domains — among them dspnet.dk, login3000.com, tandlaegernesanktanne.dk and two more.
These name servers commonly appear in combination with the name servers ns1.123hotel.dk.
ns1.curanet.dk resolves to 185.25.141.12 and 2a02:2339:4006:108::123. Likewise, ns2.curanet.dk resolves to 91.197.248.75 and 2a02:2339:1:10f::123:123 — two IP addresses apiece.
Mail Servers
itstack.dk uses two mail servers, mx1.onlinemail.io and mx2.onlinemail.io.
The mail server setup of itstack.dk matches that of other domains such as logoon.dk, grusterminalen.dk, soldater.dk and two others.
The mail servers for itstack.dk overlap at least partially with those of other domains, including tectum.dk and joench.dk.
Both mx1.onlinemail.io and mx2.onlinemail.io have a single IP address each — mx1.onlinemail.io resolves to 185.21.42.12 while mx2.onlinemail.io resolves to 46.36.208.16.