krell-optik.de - robtex.com
krell-optik.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.88.34.181🇩🇪 CLOUDPIT81.88.32.0/20 | ||||||
| PTR | host177.alfahosting-server.de | ||||||
| NS | cns1.alfahosting.info ⭐ | ||||||
| A | 2a01:64c0:0:5000::8🇩🇪 CLOUDPIT2a01:64c0::/32 | ||||||
| PTR | cns1.cloudpit.de | ||||||
| A | 109.237.142.8🇩🇪 CLOUDPIT109.237.128.0/20 | ||||||
| PTR | cns1.cloudpit.de | ||||||
| NS | cns2.alfahosting.info | ||||||
| A | 2a01:4f8:2b02:a88::105🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | cns2.cloudpit.com | ||||||
| A | 148.251.254.105🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2 | ||||||
| PTR | cns2.cloudpit.com | ||||||
| NS | cns3.alfahosting.info | ||||||
| A | 2a02:2b80:101:5000::8🇩🇪 CLOUDPIT2a02:2b80:101::/48 | ||||||
| PTR | cns3.cloudpit.io | ||||||
| A | 109.237.143.8🇩🇪 CLOUDPIT109.237.128.0/20 | ||||||
| PTR | cns3.cloudpit.io | ||||||
| MX | mx03.secure-mailgate.com ⭐ | ||||||
| A | 46.243.88.174🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node03.secure-mailgate.com | ||||||
| A | 46.243.88.176🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node04.secure-mailgate.com | ||||||
| MX | mx04.secure-mailgate.com ⭐ | ||||||
| A | 46.243.88.175🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node03.secure-mailgate.com | ||||||
| A | 46.243.88.177🇩🇪 CLOUDPIT46.243.88.0/21 | ||||||
| PTR | node04.secure-mailgate.com | ||||||
| SOA | cns1.alfahosting.infohostmaster@alfahosting.de 2026-01-13 #1 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1786723889 | ||||||
Subdomains
mail.krell-optik.de |
Same first word
krell-optik.de |
DNS History
8 records (6 active, 2 former)
●NScns1.alfahosting.info2015-08-03 → 2026-08-14 · 2 obs
● 2026-08-14 16:51:22
●NScns2.alfahosting.info2015-08-03 → 2026-08-14 · 2 obs
● 2026-08-14 16:51:22
●NScns3.alfahosting.info2015-08-03 → 2026-08-14 · 2 obs
● 2026-08-14 16:51:22
○MXmail.krell-optik.de2015-08-03 → 2017-07-07 · 4 obs
● 2017-07-07 00:22:52
○ 2026-08-14 06:29:00
○ 2026-08-14 16:51:22
●MXmx03.secure-mailgate.com2026-08-14 → 2026-08-14 · 3 obs
● 2026-08-14 06:29:00
● 2026-08-14 16:51:22
●MXmx04.secure-mailgate.com2026-08-14 → 2026-08-14 · 3 obs
● 2026-08-14 06:29:00
● 2026-08-14 16:51:22
○A109.237.138.262015-08-03 → 2017-07-07 · 4 obs
● 2017-07-07 00:22:52
○ 2026-08-14 06:29:00
○ 2026-08-14 16:51:22
●A81.88.34.1812026-08-14 → 2026-08-14 · 3 obs
● 2026-08-14 06:29:00
● 2026-08-14 16:51:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| krell-optik.de | cns2.alfahosting.info, cns3.alfahosting.info, cns1.alfahosting.info | - |
✅ Authoritative Response
Server:148.251.254.105
NS records: cns2.alfahosting.info, cns3.alfahosting.info, cns1.alfahosting.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for krell-optik.de (unsigned zone)
⏱️ Timing
Total: 1019ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.88.34.181 |
| NS | 3 | cns3.alfahosting.info, cns2.alfahosting.info... |
| MX | 2 | mx04.secure-mailgate.com (pri: 10), mx03.secure-mailgate.com (pri: 10) |
| SOA | 1 | cns1.alfahosting.info hostmaster.alfahos |
Analysis
Hierarchy
The domain mail.krell-optik.de falls under the parent krell-optik.de.
IP Addresses
krell-optik.de resolves to one IP address: 81.88.34.181.
hautnah-dessous.org, webdesign-vetterwirtschaft.de, mail.hanswagner.de and two other host names share IP numbers with krell-optik.de.
Name Servers
krell-optik.de has three name servers — cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.
At least some of krell-optik.de's name servers are shared with other domains, for example ahrensundco.de, leipzig-vermessung.de, pranita.de and two more.
Each of cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info points to two IP numbers. cns1.alfahosting.info points to 109.237.142.8 and 2a01:64c0:0:5000::8. cns2.alfahosting.info points to 148.251.254.105 and 2a01:4f8:2b02:a88::105. cns3.alfahosting.info points to 109.237.143.8 and 2a02:2b80:101:5000::8.
Mail Servers
Mail for krell-optik.de is handled by two mail servers — mx03.secure-mailgate.com and mx04.secure-mailgate.com.
krell-optik.de uses an identical mail server configuration to several other domains — among them execc.de, tankdesigner.de, annaheindl.at and two more.
Both mx03.secure-mailgate.com and mx04.secure-mailgate.com have two IP addresses each. mx03.secure-mailgate.com resolves to 46.243.88.174 and 46.243.88.176; mx04.secure-mailgate.com resolves to 46.243.88.175 and 46.243.88.177.