problem-solving.ch - dns.ninja
problem-solving.ch
| DNSSEC | ⚠️ Not signed | ||||||
| A | 195.70.7.123🇨🇭 DFINET195.70.0.0/19 dfinet | ||||||
| NS | ns3.dfinet.ch ⭐ | ||||||
| A | 195.70.9.18🇨🇭 DFINET195.70.0.0/19 dfinet | ||||||
| PTR | ns3.dfinet.ch | ||||||
| NS | ns4.dfinet.ch | ||||||
| A | 195.70.2.162🇨🇭 DFINET195.70.0.0/19 dfinet | ||||||
| PTR | ns4.dfinet.ch | ||||||
| MX | mail-se-01.dfinet.ch ⭐ | ||||||
| A | 195.70.7.116🇨🇭 DFINET195.70.0.0/19 dfinet | ||||||
| MX | mail-se-02.dfinet.ch ⭐ | ||||||
| A | 195.70.7.117🇨🇭 DFINET195.70.0.0/19 dfinet | ||||||
| PTR | mail-se-02.dfinet.ch | ||||||
| TXT | v=spf1 ip4:195.70.12.117 include:dfinet.ch ip4:195.70.7.123 +a +mx ~all | ||||||
| SOA | ns3.dfinet.chsystem@dfi.ch 2025-07-23 #0 | ||||||
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 2026-06-22 #4 | ||||||
Same first word
problem-solving.fr |
problem-solving.de |
problem-solving.ch |
problem-solving.info |
problem-solving.cz |
problem-solving.ru |
problem-solving.net |
problem-solving.com |
problem-solving.org |
DNS History
11 records (5 active, 6 former)
●NSns3.dfinet.ch2026-03-15 → 2026-06-22 · 3 obs
● 2026-03-15 16:23:58
● 2026-06-22 00:54:26
●NSns4.dfinet.ch2026-03-15 → 2026-06-22 · 3 obs
● 2026-03-15 16:23:58
● 2026-06-22 00:54:26
○NSns5.nine.ch2015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
○NSns6.nine.ch2015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
●MXmail-se-01.dfinet.ch2026-03-15 → 2026-06-22 · 2 obs
● 2026-06-22 00:54:26
●MXmail-se-02.dfinet.ch2026-03-15 → 2026-06-22 · 2 obs
● 2026-06-22 00:54:26
●A195.70.7.1232026-03-15 → 2026-06-22 · 3 obs
● 2026-03-15 16:23:58
● 2026-06-22 00:54:26
○A216.239.32.212015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
○A216.239.34.212015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
○A216.239.36.212015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
○A216.239.38.212015-07-24 → 2016-06-25 · 4 obs
● 2016-06-25 22:23:02
○ 2017-03-29 01:38:10
○ 2026-06-22 00:54:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ch | d.nic.ch, b.nic.ch, f.nic.ch, e.nic.ch... | - |
| problem-solving.ch | ns3.dfinet.ch, ns4.dfinet.ch | - |
✅ Authoritative Response
Server:195.70.2.162
NS records: ns3.dfinet.ch, ns4.dfinet.ch
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for problem-solving.ch (unsigned zone)
⏱️ Timing
Total: 600ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 195.70.7.123 |
| NS | 2 | ns3.dfinet.ch, ns4.dfinet.ch |
| MX | 2 | mail-se-02.dfinet.ch (pri: 10), mail-se-01.dfinet.ch (pri: 10) |
| TXT | 1 | v=spf1 ip4:195.70.12.117 include:dfinet. |
| SOA | 1 | ns3.dfinet.ch system.dfi.ch |
Analysis
IP Addresses
problem-solving.ch resolves to one IP address: 195.70.7.123.
amaudit.ch, yvano.net, partnerfid.ch and two other host names share IP numbers with problem-solving.ch.
Name Servers
problem-solving.ch is served by two delegated name servers, ns3.dfinet.ch and ns4.dfinet.ch.
problem-solving.ch uses the same name servers as several other domains — among them ovale.biz, banquethaler.com, stratco-sa.com and two more.
ns3.dfinet.ch directs to 195.70.9.18 and ns4.dfinet.ch directs to 195.70.2.162; each host name points to exactly one IP number.
Mail Servers
Mail for problem-solving.ch is handled by two mail servers — mail-se-01.dfinet.ch and mail-se-02.dfinet.ch.
problem-solving.ch uses an identical mail server configuration to several other domains — among them dfi-direct.ch, noga.ch, gtkp.com and two more.
problem-solving.ch has at least partial mail server overlap with other domains such as leutenegger.net, bizjet.ch, economat.ch and two more.
mail-se-01.dfinet.ch directs to 195.70.7.116 and mail-se-02.dfinet.ch directs to 195.70.7.117; each host name points to exactly one IP number.