calculus.ch - robtex.com
calculus.ch
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2600:9000:a608:76e1:dbd:84dd:75bb:2f51🇺🇸 Amazon2600:9000:a600::/43 | ||||||
| PTR | ae5f041f8efad4460.dualstack.awsglobalaccelerator.com | ||||||
| A | 76.223.112.36🇺🇸 Amazon76.223.112.0/20 | ||||||
| NS | a.gpk.eu ⭐ | ||||||
| A | 2a05:d014:a67:a290::a🇩🇪 Amazon2a05:d014:800::/38 AMAZON AWS | ||||||
| PTR | a.gpk.eu | ||||||
| A | 3.65.43.32🇩🇪 Amazon3.64.0.0/12 EC2 FRA Prefix | ||||||
| PTR | a.gpk.eu | ||||||
| NS | b.gpk.eu | ||||||
| A | 2a03:b0c0:2:d0::e8c:8001🇳🇱 DIGITALOCEAN2a03:b0c0:2::/48 DigitalOcean | ||||||
| PTR | b.gpk.eu | ||||||
| A | 167.71.72.66🇳🇱 DIGITALOCEAN167.71.64.0/20 DigitalOcean | ||||||
| PTR | b.gpk.eu | ||||||
| NS | c.gpk.eu | ||||||
| A | 2a00:da00:f203:400::1🇬🇧 IONOS-AS2a00:da00:f200::/39 IONOS SE vl5.wdr.gb | ||||||
| PTR | c.gpk.eu | ||||||
| A | 82.165.4.5🇩🇪 IONOS-AS82.165.4.0/22 ionos-cloud vl5.wdr.gb | ||||||
| PTR | c.gpk.eu | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | a.gpk.eudnsmaster4@gpark.eu 2026-08-05 #2 | ||||||
ch
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.ch ⭐ | ||||||
| NS | b.nic.ch | ||||||
| NS | d.nic.ch | ||||||
| NS | e.nic.ch | ||||||
| NS | f.nic.ch | ||||||
| SOA | a.nic.chdns-operation@switch.ch 2026-08-16 #2 | ||||||
Subdomains
www.calculus.ch |
Same first word
Similar names
DNS History
17 records (5 active, 12 former)
●NSa.gpk.eu2026-03-04 → 2026-08-15 · 3 obs
● 2026-03-04 00:25:36
● 2026-08-15 23:13:08
●NSb.gpk.eu2026-03-04 → 2026-08-15 · 3 obs
● 2026-03-04 00:25:36
● 2026-08-15 23:13:08
●NSc.gpk.eu2026-03-04 → 2026-08-15 · 3 obs
● 2026-03-04 00:25:36
● 2026-08-15 23:13:08
○NSns1.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○NSns2.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○NSns3.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○NSns4.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○MXall01.mx.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○MXall02.mx.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○MXall03.mx.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○MXbsl01.mx.genotec.ch2015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○A2001:1b50::82:195:224:1162015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
○A2600:9000:a608:76e1:40b:6cc5:1af9:c3f52026-03-04 → 2026-04-22 · 5 obs
● 2026-03-04 00:25:36
● 2026-04-22 10:24:30
○ 2026-06-08 13:50:34
○ 2026-08-15 23:13:08
●A2600:9000:a608:76e1:dbd:84dd:75bb:2f512026-06-08 → 2026-08-15 · 3 obs
● 2026-06-08 13:50:34
● 2026-08-15 23:13:08
○A75.2.126.672026-03-04 → 2026-04-22 · 5 obs
● 2026-03-04 00:25:36
● 2026-04-22 10:24:30
○ 2026-06-08 13:50:34
○ 2026-08-15 23:13:08
●A76.223.112.362026-06-08 → 2026-08-15 · 3 obs
● 2026-06-08 13:50:34
● 2026-08-15 23:13:08
○A82.195.224.1162015-07-18 → 2017-10-11 · 4 obs
● 2017-10-11 19:34:40
○ 2026-03-04 00:25:36
○ 2026-08-15 23:13:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | b.nic.ch, d.nic.ch, a.nic.ch, f.nic.ch... | 10 records |
| calculus.ch | a.gpk.eu, b.gpk.eu, c.gpk.eu | - |
✅ Authoritative Response
Server:3.65.43.32
NS records: a.gpk.eu, b.gpk.eu, c.gpk.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1038ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 76.223.112.36 |
| AAAA | 1 | 2600:9000:a608:76e1:dbd:84dd:75bb:2f51 |
| NS | 3 | b.gpk.eu, c.gpk.eu... |
| MX | 1 | . (pri: 0) |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | a.gpk.eu dnsmaster4.gpark.eu |
📌 Glue Records Collected
Total: 10
In-bailiwick: 10 (a.nic.ch, b.nic.ch, d.nic.ch...)
Analysis
Hierarchy
calculus.ch is the parent zone for www.calculus.ch.
IP Addresses
calculus.ch resolves to the IP addresses 76.223.112.36 and 2600:9000:a608:76e1:dbd:84dd:75bb:2f51
Two other host names, along with solide.eu, bioconsulting.eu and envitec.eu, also share IP numbers with calculus.ch.
Name Servers
calculus.ch has three name servers — a.gpk.eu, b.gpk.eu and c.gpk.eu.
calculus.ch partially shares its NS delegation with several other domains, including asbh.eu, templar.eu, hydro-tec.eu and two others.
Each of a.gpk.eu, b.gpk.eu and c.gpk.eu points to two IP numbers. a.gpk.eu points to 3.65.43.32 and 2a05:d014:a67:a290::a. b.gpk.eu points to 167.71.72.66 and 2a03:b0c0:2:d0::e8c:8001. c.gpk.eu points to 82.165.4.5 and 2a00:da00:f203:400::1.