karsta.com - dns.ninja
karsta.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.88.34.186🇩🇪 CLOUDPIT81.88.32.0/20 | ||||||
| PTR | host232.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 2026-07-29 #2 | ||||||
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=1786722084 | ||||||
Subdomains
mail.karsta.com |
Same first word
Similar names
DNS History
9 records (6 active, 3 former)
●NScns1.alfahosting.info2017-01-21 → 2026-08-14 · 2 obs
● 2026-08-14 16:07:08
●NScns2.alfahosting.info2017-01-21 → 2026-08-14 · 2 obs
● 2026-08-14 16:07:08
●NScns3.alfahosting.info2017-01-21 → 2026-08-14 · 2 obs
● 2026-08-14 16:07:08
○MXmail.karsta.com2017-01-21 → 2020-01-26 · 4 obs
● 2020-01-26 19:32:40
○ 2026-02-17 20:00:38
○ 2026-08-14 16:07:08
●MXmx03.secure-mailgate.com2026-02-17 → 2026-08-14 · 3 obs
● 2026-02-17 20:00:38
● 2026-08-14 16:07:08
●MXmx04.secure-mailgate.com2026-02-17 → 2026-08-14 · 3 obs
● 2026-02-17 20:00:38
● 2026-08-14 16:07:08
○A109.237.138.402017-01-21 → 2020-01-26 · 5 obs
● 2017-01-21 08:54:36
● 2020-01-26 19:32:40
○ 2026-02-17 20:00:38
○ 2026-08-14 16:07:08
○A185.26.230.1342015-06-22 → 2016-04-11 · 4 obs
● 2016-04-11 05:33:06
○ 2017-01-21 08:54:36
○ 2026-08-14 16:07:08
●A81.88.34.1862026-02-17 → 2026-08-14 · 3 obs
● 2026-02-17 20:00:38
● 2026-08-14 16:07:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| karsta.com | cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info | - |
✅ Authoritative Response
Server:109.237.143.8
NS records: cns3.alfahosting.info, cns2.alfahosting.info, cns1.alfahosting.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for karsta.com (unsigned zone)
⏱️ Timing
Total: 1945ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.88.34.186 |
| NS | 3 | cns1.alfahosting.info, cns2.alfahosting.info... |
| MX | 2 | mx03.secure-mailgate.com (pri: 10), mx04.secure-mailgate.com (pri: 10) |
| SOA | 1 | cns1.alfahosting.info hostmaster@alfahos |
Analysis
Hierarchy
mail.karsta.com is delegated beneath karsta.com.
IP Addresses
karsta.com points to a single IP number: 81.88.34.186.
Additional host names — markasitschmuck.de, mail.karsta.com, tobiaslehner.com and two others — share IP numbers with karsta.com.
Name Servers
karsta.com carries NS records delegating to cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.
There is at least partial name server overlap between karsta.com and other domains — dorfring.com, mops.net, k-support.de and two more among them.
These name servers are routinely deployed together with the name servers ns1.spaceindex.de.
cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info are three hostnames that each resolve to a pair of IP addresses: cns1.alfahosting.info to 109.237.142.8 and 2a01:64c0:0:5000::8, cns2.alfahosting.info to 148.251.254.105 and 2a01:4f8:2b02:a88::105, and cns3.alfahosting.info to 109.237.143.8 and 2a02:2b80:101:5000::8.
Mail Servers
karsta.com has two mail servers: mx03.secure-mailgate.com and mx04.secure-mailgate.com.
karsta.com shares the same mail server setup as other domains, including job4us.de, dschneiders.de, laib-home.de and two others.
Some mail servers of karsta.com are also used by other domains, notably cetrix-it.de and usol.de.
mx03.secure-mailgate.com and mx04.secure-mailgate.com both carry two IP addresses. The A records for mx03.secure-mailgate.com are 46.243.88.174 and 46.243.88.176; the A records for mx04.secure-mailgate.com are 46.243.88.175 and 46.243.88.177.