holtfurth.com - robtex.com
holtfurth.com
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=1778872676 | ||||||
PTR for
Subdomains
mail.holtfurth.com |
Same first word
holtfurth.com |
DNS History
9 records (6 active, 3 former)
●NSnsa1.schlundtech.de2015-07-19 → 2026-05-15 · 2 obs
● 2026-05-15 19:37:30
●NSnsb1.schlundtech.de2015-07-19 → 2026-05-15 · 2 obs
● 2026-05-15 19:37:30
●NSnsc1.schlundtech.de2015-07-19 → 2026-05-15 · 2 obs
● 2026-05-15 19:37:30
●NSnsd1.schlundtech.de2015-07-19 → 2026-05-15 · 2 obs
● 2026-05-15 19:37:30
○MXmail.fx-n.de2015-07-19 → 2018-08-16 · 4 obs
● 2018-08-16 15:39:22
○ 2026-02-15 16:11:06
○ 2026-05-15 19:37:30
●MXmail.holtfurth.com2026-02-15 → 2026-05-15 · 3 obs
● 2026-02-15 16:11:06
● 2026-05-15 19:37:30
○A146.0.36.452016-02-24 → 2018-08-16 · 5 obs
● 2016-02-24 00:27:36
● 2018-08-16 15:39:22
○ 2026-02-15 16:11:06
○ 2026-05-15 19:37:30
●A188.40.170.2292026-02-15 → 2026-05-15 · 3 obs
● 2026-02-15 16:11:06
● 2026-05-15 19:37:30
○A5.199.136.1012015-07-19 → 2015-11-23 · 4 obs
● 2015-11-23 03:17:34
○ 2016-02-24 00:27:36
○ 2026-05-15 19:37:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net... | - |
| holtfurth.com | nsa1.schlundtech.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de | - |
✅ Authoritative Response
Server:217.160.81.227
NS records: nsa1.schlundtech.de, nsb1.schlundtech.de, nsc1.schlundtech.de, nsd1.schlundtech.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for holtfurth.com (unsigned zone)
⏱️ Timing
Total: 1126ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 188.40.170.229 |
| NS | 4 | nsd1.schlundtech.de, nsa1.schlundtech.de... |
| MX | 1 | mail.holtfurth.com (pri: 10) |
| TXT | 1 | v=spf1 a mx a:mail.fx-n.de mx:fx-n.de ~a |
| SOA | 1 | nsa1.schlundtech.de michael.holtfurth.co |
Analysis
Hierarchy
holtfurth.com is the parent of mail.holtfurth.com.
IP Addresses
holtfurth.com resolves to a single IP address: 188.40.170.229.
Other host names, for instance michael-holtfurth.de, share IP numbers with holtfurth.com.
Name Servers
holtfurth.com is delegated to four name servers: nsa1.schlundtech.de, nsb1.schlundtech.de, nsc1.schlundtech.de and nsd1.schlundtech.de.
holtfurth.com at least partially shares name servers with other domains, including objektiv.com, (0x736578)fetisch.de, nicscout.de, vgm-mobil.com and asb-fr.de.
Hosts with two IP numbers:
Host nsa1.schlundtech.de points to 2607:f1c0:fe:53:185:132:34:227 and 185.132.34.227
Host nsb1.schlundtech.de points to 2607:f1c0:fe:53:185:132:35:227 and 185.132.35.227
Host nsc1.schlundtech.de points to 2001:8d8:fe:53:217:160:80:227 and 217.160.80.227
Host nsd1.schlundtech.de points to 2001:8d8:fe:53:217:160:81:227 and 217.160.81.227
Mail Servers
holtfurth.com is handled by a single mail server, mail.holtfurth.com.
holtfurth.com uses the same mail server setup as other domains, for example michael-holtfurth.de and holti.org.
mail.holtfurth.com points to a single IP: 116.202.187.85.