calder-one.ch - robtex.com
calder-one.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.96.35.205🇨🇭 Amazon51.96.0.0/16 EC2 ZRH prefix | ||||||
| PTR | venus.ctekag.ch | ||||||
| NS | 4.ctekns.ch ⭐ | ||||||
| A | 2600:9000:5305:db00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1499.awsdns-59.org | ||||||
| A | 205.251.197.219🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1499.awsdns-59.org | ||||||
| NS | 1.ctekns.ch | ||||||
| A | 2600:9000:5302:2b00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| A | 205.251.194.43🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| NS | 2.ctekns.ch | ||||||
| A | 2600:9000:5306:a900::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| A | 205.251.198.169🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1705.awsdns-21.co.uk | ||||||
| NS | 3.ctekns.ch | ||||||
| A | 2600:9000:5301:300::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-259.awsdns-32.com | ||||||
| A | 205.251.193.3🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-259.awsdns-32.com | ||||||
| MX | mail.calder-one.ch ⭐ | ||||||
| A | 16.62.92.64🇨🇭 Amazon16.62.0.0/15 EC2 ZRH Prefix | ||||||
| PTR | mail1.ctek.ch | ||||||
| TXT | v=spf1 +a +mx +a:venus.ctekag.ch include:spf.ctekag.ch -all | ||||||
| SOA | 4.ctekns.chhostmaster@ctekns.ch 2024-12-23 #4 | ||||||
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 2026-08-10 #7 | ||||||
Subdomains
Same first word
calder-one.ch |
Similar names
DNS History
14 records (6 active, 8 former)
●NS1.ctekns.ch2026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
●NS2.ctekns.ch2026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
●NS3.ctekns.ch2026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
●NS4.ctekns.ch2026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
○NSns1.ctek.ch2015-08-19 → 2020-03-04 · 4 obs
● 2020-03-04 19:52:54
○ 2026-04-10 23:04:26
○ 2026-08-10 02:17:40
○NSns2.ctek.ch2015-08-19 → 2020-03-04 · 4 obs
● 2020-03-04 19:52:54
○ 2026-04-10 23:04:26
○ 2026-08-10 02:17:40
●MXmail.calder-one.ch2026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
○MXmailcheck1.ctekag.ch2020-03-04 → 2020-03-04 · 4 obs
● 2020-03-04 19:52:54
○ 2026-04-10 23:04:26
○ 2026-08-10 02:17:40
○MXmailcheck2.ctekag.ch2020-03-04 → 2020-03-04 · 4 obs
● 2020-03-04 19:52:54
○ 2026-04-10 23:04:26
○ 2026-08-10 02:17:40
○MXmf3.mailcheck.ch2015-08-19 → 2017-02-18 · 4 obs
● 2017-02-18 09:52:30
○ 2020-03-04 19:52:54
○ 2026-08-10 02:17:40
○MXmf4.mailcheck.ch2015-08-19 → 2017-02-18 · 4 obs
● 2017-02-18 09:52:30
○ 2020-03-04 19:52:54
○ 2026-08-10 02:17:40
●A51.96.35.2052026-04-10 → 2026-08-10 · 3 obs
● 2026-04-10 23:04:26
● 2026-08-10 02:17:40
○A52.30.132.572016-07-08 → 2020-03-04 · 5 obs
● 2016-07-08 15:36:36
● 2020-03-04 19:52:54
○ 2026-04-10 23:04:26
○ 2026-08-10 02:17:40
○A54.77.148.1622015-08-19 → 2016-03-07 · 4 obs
● 2016-03-07 09:38:22
○ 2016-07-08 15:36:36
○ 2026-08-10 02:17:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | d.nic.ch, e.nic.ch, b.nic.ch, a.nic.ch... | - |
| calder-one.ch | 2.ctekns.ch, 1.ctekns.ch, 4.ctekns.ch, 3.ctekns.ch | 8 records |
✅ Authoritative Response
Server:205.251.197.219
NS records: 2.ctekns.ch, 1.ctekns.ch, 4.ctekns.ch, 3.ctekns.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for calder-one.ch (unsigned zone)
⏱️ Timing
Total: 316ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.96.35.205 |
| NS | 4 | 1.ctekns.ch, 2.ctekns.ch... |
| MX | 1 | mail.calder-one.ch (pri: 10) |
| TXT | 1 | v=spf1 +a +mx +a:venus.ctekag.ch include |
| SOA | 1 | 4.ctekns.ch hostmaster.ctekns.ch |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (4.ctekns.ch, 3.ctekns.ch, 2.ctekns.ch...)
Analysis
Hierarchy
www.calder-one.ch and mail.calder-one.ch each fall under calder-one.ch as their parent domain.
IP Addresses
calder-one.ch resolves to just one IP address, 51.96.35.205.
Two other host names, along with bikerheadset.ch, walltattoo.ch and maua-beach.ch, also share IP numbers with calder-one.ch.
Name Servers
The NS records for calder-one.ch point to four name servers: 1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch and 4.ctekns.ch.
calder-one.ch partially shares its NS delegation with several other domains, including soba-inter.com, sahli.ch, intergrund.ch and two others.
The name servers ns1.ctek.ch, ns2.ctek.ch, ns1.netwings.net and ns2.netwings.net are often found in use alongside these name servers.
1.ctekns.ch, 2.ctekns.ch, 3.ctekns.ch and 4.ctekns.ch each carry two IP addresses. 1.ctekns.ch has 205.251.194.43 and 2600:9000:5302:2b00::1; 2.ctekns.ch has 205.251.198.169 and 2600:9000:5306:a900::1; 3.ctekns.ch has 205.251.193.3 and 2600:9000:5301:300::1; 4.ctekns.ch has 205.251.197.219 and 2600:9000:5305:db00::1.
Mail Servers
The sole mail server for calder-one.ch is mail.calder-one.ch.
mail.calder-one.ch directs to just one IP number, 16.62.92.64.