opensource-book.com - dns.ninja
opensource-book.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 85.13.134.57🇩🇪 NMM-AS85.13.134.0/24 Neue Medien Muennich | ||||||
| PTR | dd21412.kasserver.com | ||||||
| NS | ns5.kasserver.com ⭐ | ||||||
| A | 85.13.128.3🇩🇪 NMM-AS85.13.128.0/24 Neue Medien Muennich | ||||||
| PTR | ns5.kasserver.com | ||||||
| NS | ns6.kasserver.com | ||||||
| A | 85.13.159.101🇩🇪 NMM-AS85.13.159.0/24 Neue Medien Muennich | ||||||
| PTR | ns6.kasserver.com | ||||||
| MX | w00b0c0c.kasserver.com ⭐ | ||||||
| A | 85.13.134.57🇩🇪 NMM-AS85.13.134.0/24 Neue Medien Muennich | ||||||
| PTR | dd21412.kasserver.com | ||||||
| TXT | v=spf1 a mx include:spf.kasserver.com ~all | ||||||
| SOA | ns5.kasserver.comhostmaster@kasserver.com serial=2602221239 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1783867912 | ||||||
Subdomains
mail.opensource-book.com |
Same first word
opensource-book.com |
DNS History
8 records (4 active, 4 former)
●NSns5.kasserver.com2015-06-03 → 2026-07-12 · 2 obs
● 2026-07-12 15:13:00
●NSns6.kasserver.com2015-06-03 → 2026-07-12 · 2 obs
● 2026-07-12 15:13:00
○MXmail.opensource-book.com2015-06-03 → 2016-09-24 · 4 obs
● 2016-09-24 08:26:52
○ 2017-05-14 08:54:52
○ 2026-07-12 15:13:00
●MXw00b0c0c.kasserver.com2017-05-14 → 2026-07-12 · 3 obs
● 2017-05-14 08:54:52
● 2026-07-12 15:13:00
○A85.13.129.1022016-03-28 → 2017-05-14 · 5 obs
● 2016-03-28 15:12:50
● 2017-05-14 08:54:52
○ 2026-03-25 07:06:36
○ 2026-07-12 15:13:00
●A85.13.134.572026-03-25 → 2026-07-12 · 3 obs
● 2026-03-25 07:06:36
● 2026-07-12 15:13:00
○A85.13.135.2432015-12-29 → 2015-12-29 · 4 obs
● 2015-12-29 02:39:06
○ 2016-03-28 15:12:50
○ 2026-07-12 15:13:00
○A85.13.136.42015-06-03 → 2015-10-26 · 4 obs
● 2015-10-26 15:51:18
○ 2015-12-29 02:39:06
○ 2026-07-12 15:13:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | c.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net... | - |
| opensource-book.com | ns5.kasserver.com, ns6.kasserver.com | 2 records |
✅ Authoritative Response
Server:85.13.128.3
NS records: ns5.kasserver.com, ns6.kasserver.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opensource-book.com (unsigned zone)
⏱️ Timing
Total: 474ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.13.134.57 |
| NS | 2 | ns5.kasserver.com, ns6.kasserver.com |
| MX | 1 | w00b0c0c.kasserver.com (pri: 10) |
| TXT | 1 | v=spf1 a mx include:spf.kasserver.com ~a |
| SOA | 1 | ns5.kasserver.com hostmaster.kasserver.c |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns5.kasserver.com, ns6.kasserver.com)
Analysis
Hierarchy
The domain mail.opensource-book.com falls under the parent opensource-book.com.
IP Addresses
opensource-book.com has exactly one IP address — 85.13.134.57.
sdgsgermany.de, motion-lab.de, flf.eu plus two other host names have IP numbers in common with opensource-book.com.
Name Servers
opensource-book.com has two authoritative name servers — ns5.kasserver.com and ns6.kasserver.com.
The name server configuration of opensource-book.com is shared with other domains, for instance robert-seidler.at, einreise.org, ratskeller-rheydt.de and two others.
At least some of opensource-book.com's name servers are shared with other domains, for example insti.de, a0ffa3.de, mandysabenteuerwelt.de and two more.
These name servers are often deployed together with the name servers ns3.ai-dns.de, ns5.name-server-kas.de, a-dns-service.de and ns3.kas-dns-server.de.
Each of ns5.kasserver.com and ns6.kasserver.com has one IP address: ns5.kasserver.com uses 85.13.128.3 and ns6.kasserver.com uses 85.13.159.101.
Mail Servers
opensource-book.com uses one mail server — w00b0c0c.kasserver.com.
w00b0c0c.kasserver.com points to one IP number — 85.13.134.57.