calculus.dk - dns.ninja
calculus.dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 94.23.2.120🇫🇷 OVH94.23.0.0/16 ISP Paris, France | ||||||
| PTR | ns204060.ip-94-23-2.eu | ||||||
| NS | ns01.one.com ⭐ | ||||||
| A | 2001:67c:28cc::10ONECOM-INFRA2001:67c:28cc::/48 | ||||||
| PTR | ns01.one.com | ||||||
| A | 195.206.121.10ONECOM-INFRA195.206.121.0/24 | ||||||
| PTR | ns01.one.com | ||||||
| NS | ns02.one.com | ||||||
| A | 2001:67c:3c0::10🇩🇰 ONECOM2001:67c:3c0::/48 | ||||||
| PTR | ns02.one.com | ||||||
| A | 185.10.11.10ONECOM185.10.11.0/24 | ||||||
| PTR | ns02.one.com | ||||||
| MX | mx1.pub.mailpod11-cph3.one.com ⭐ | ||||||
| A | 104.37.34.230🇩🇰 ONECOM104.37.32.0/21 One.com A/S | ||||||
| PTR | mx1.pub.mailpod11-cph3.one.com | ||||||
| MX | mx2.pub.mailpod11-cph3.one.com ⭐ | ||||||
| A | 104.37.34.231🇩🇰 ONECOM104.37.32.0/21 One.com A/S | ||||||
| PTR | mx2.pub.mailpod11-cph3.one.com | ||||||
| MX | mx3.pub.mailpod11-cph3.one.com ⭐ | ||||||
| A | 104.37.34.232🇩🇰 ONECOM104.37.32.0/21 One.com A/S | ||||||
| PTR | mx3.pub.mailpod11-cph3.one.com | ||||||
| MX | mx4.pub.mailpod11-cph3.one.com ⭐ | ||||||
| A | 104.37.34.233🇩🇰 ONECOM104.37.32.0/21 One.com A/S | ||||||
| PTR | mx4.pub.mailpod11-cph3.one.com | ||||||
| SOA | ns01.one.comhostmaster@one.com 2026-03-24 #1 | ||||||
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 1785026161localtime Sun Jul 26 02:36:01 2026gmtime Sun Ju... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1785026161 | ||||||
Subdomains
mail.calculus.dk |
Same first word
Similar names
DNS History
13 records (7 active, 6 former)
●NSns01.one.com2026-02-15 → 2026-07-26 · 3 obs
● 2026-02-15 14:01:08
● 2026-07-26 01:20:12
●NSns02.one.com2026-02-15 → 2026-07-26 · 3 obs
● 2026-02-15 14:01:08
● 2026-07-26 01:20:12
○NSns1.gratisdns.dk2015-07-02 → 2018-08-01 · 4 obs
● 2018-08-01 06:43:02
○ 2026-02-15 14:01:08
○ 2026-07-26 01:20:12
○NSns2.gratisdns.dk2015-07-02 → 2018-08-01 · 4 obs
● 2018-08-01 06:43:02
○ 2026-02-15 14:01:08
○ 2026-07-26 01:20:12
○NSns3.gratisdns.dk2015-07-02 → 2018-08-01 · 4 obs
● 2018-08-01 06:43:02
○ 2026-02-15 14:01:08
○ 2026-07-26 01:20:12
○NSns4.gratisdns.dk2015-07-02 → 2018-08-01 · 4 obs
● 2018-08-01 06:43:02
○ 2026-02-15 14:01:08
○ 2026-07-26 01:20:12
○NSns5.gratisdns.dk2015-07-02 → 2018-08-01 · 4 obs
● 2018-08-01 06:43:02
○ 2026-02-15 14:01:08
○ 2026-07-26 01:20:12
●MXmx1.pub.mailpod11-cph3.one.com2026-02-15 → 2026-07-26 · 2 obs
● 2026-07-26 01:20:12
●MXmx2.pub.mailpod11-cph3.one.com2026-02-15 → 2026-07-26 · 2 obs
● 2026-07-26 01:20:12
●MXmx3.pub.mailpod11-cph3.one.com2026-02-15 → 2026-07-26 · 2 obs
● 2026-07-26 01:20:12
●MXmx4.pub.mailpod11-cph3.one.com2026-02-15 → 2026-07-26 · 2 obs
● 2026-07-26 01:20:12
○A77.66.57.2142015-07-02 → 2016-02-12 · 4 obs
● 2016-02-12 07:53:16
○ 2016-07-02 19:05:22
○ 2026-07-26 01:20:12
●A94.23.2.1202016-07-02 → 2026-07-26 · 3 obs
● 2016-07-02 19:05:22
● 2026-07-26 01:20:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | s.nic.dk, t.nic.dk, h.nic.dk, b.nic.dk... | - |
| calculus.dk | ns01.one.com, ns02.one.com | - |
✅ Authoritative Response
Server:195.206.121.10
NS records: ns01.one.com, ns02.one.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2648ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 94.23.2.120 |
| NS | 2 | ns01.one.com, ns02.one.com |
| MX | 4 | mx3.pub.mailpod11-cph3.one.com (pri: 10), mx1.pub.mailpod11-cph3.one.com (pri: 10)... |
| SOA | 1 | ns01.one.com hostmaster.one.com |
Analysis
Hierarchy
The domain mail.calculus.dk falls under the parent calculus.dk.
IP Addresses
calculus.dk resolves to just one IP address, 94.23.2.120.
Two other host names, along with aalborgskolen.dk, ns204060.ip-94-23-2.eu and hobby-centret.dk, also share IP numbers with calculus.dk.
Name Servers
calculus.dk is delegated to two name servers: ns01.one.com and ns02.one.com.
calculus.dk shares its NS records with other domains, for example shukr.dk, saraforsberg.com, five.se and two others.
ns01.one.com and ns02.one.com each resolve to two IP addresses: ns01.one.com points to 195.206.121.10 and 2001:67c:28cc::10, while ns02.one.com points to 185.10.11.10 and 2001:67c:3c0::10.
Mail Servers
Mail for calculus.dk is handled by four mail servers: mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com, mx3.pub.mailpod11-cph3.one.com and mx4.pub.mailpod11-cph3.one.com.
There is at least a partial MX overlap between calculus.dk and other domains, including schoening.dk, fibrepartner.com, cashmere.dk and two others.
The hosts mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com, mx3.pub.mailpod11-cph3.one.com and mx4.pub.mailpod11-cph3.one.com all resolve to exactly one IP address each: 104.37.34.230, 104.37.34.231, 104.37.34.232 and 104.37.34.233 respectively.