mailbuffer.de - dns.ninja
mailbuffer.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 213.133.109.180🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | static.213-133-109-180.clients.your-server.de | ||||||
| NS | hydrogen.ns.hetzner.com ⭐ | ||||||
| A | 2a01:4f8:0:1::add:1098🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | hydrogen.ns.hetzner.com | ||||||
| A | 213.133.100.98🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | hydrogen.ns.hetzner.com | ||||||
| NS | helium.ns.hetzner.de ⚠️ Not in parent delegation | ||||||
| A | 2001:67c:192c::add:5🇩🇪 NORIS-NETWORK2001:67c:192c::/48 | ||||||
| PTR | helium.ns.hetzner.de | ||||||
| A | 193.47.99.5🇩🇪 NORIS-NETWORK193.47.99.0/24 | ||||||
| PTR | helium.ns.hetzner.de | ||||||
| NS | oxygen.ns.hetzner.com | ||||||
| A | 2a01:4f8:0:1::add:2992🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | oxygen.ns.hetzner.com | ||||||
| A | 88.198.229.192🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | oxygen.ns.hetzner.com | ||||||
| MX | mail.geektool.de ⭐ | ||||||
| A | 188.40.100.200🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1 | ||||||
| PTR | mail.geektool.de | ||||||
| SOA | hydrogen.ns.hetzner.comdns@hetzner.com 2026-04-29 #0 | ||||||
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=1784243654 | ||||||
Same first word
mailbuffer.io |
mailbuffer.com |
mailbuffer.de |
Similar names
DNS History
7 records (5 active, 2 former)
●NShelium.ns.hetzner.de2026-07-16 → 2026-07-16 · 3 obs
● 2026-07-16 23:32:58
● 2026-07-16 23:33:00
●NShydrogen.ns.hetzner.com2026-02-22 → 2026-07-16 · 3 obs
● 2026-02-22 21:36:00
● 2026-07-16 23:33:00
○NSns.geektool.de2015-06-27 → 2016-12-20 · 4 obs
● 2016-12-20 15:26:08
○ 2026-02-22 21:36:00
○ 2026-07-16 23:33:00
○NSns.x-cellent.com2015-06-27 → 2016-12-20 · 4 obs
● 2016-12-20 15:26:08
○ 2026-02-22 21:36:00
○ 2026-07-16 23:33:00
●NSoxygen.ns.hetzner.com2026-02-22 → 2026-07-16 · 3 obs
● 2026-02-22 21:36:00
● 2026-07-16 23:33:00
●MXmail.geektool.de2015-06-27 → 2026-07-16 · 2 obs
● 2026-07-16 23:33:00
●A213.133.109.1802015-06-27 → 2026-07-16 · 2 obs
● 2026-07-16 23:33:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| mailbuffer.de | oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com | - |
✅ Authoritative Response
Server:88.198.229.192
NS records: oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mailbuffer.de (unsigned zone)
⏱️ Timing
Total: 1254ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.133.109.180 |
| NS | 3 | hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com... |
| MX | 1 | mail.geektool.de (pri: 10) |
| SOA | 1 | hydrogen.ns.hetzner.com dns.hetzner.com |
Analysis
IP Addresses
mailbuffer.de resolves to one IP address: 213.133.109.180.
mailbuffer.de shares its IP numbers with other host names, including securityportal.de, 213-133-109-180.clients.your-server.de, cloudlook.de and static.213-133-109-180.clients.your-server.de.
Name Servers
mailbuffer.de is served by three name servers: hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.
There is at least partial name server overlap between mailbuffer.de and other domains — blackworks.de, msimon.info, bmen.eu and two more among them.
These name servers tend to appear in combination with the name servers robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de and ns1.your-server.de.
The hostnames hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de each direct to two IP addresses — hydrogen.ns.hetzner.com to 213.133.100.98 and 2a01:4f8:0:1::add:1098, oxygen.ns.hetzner.com to 88.198.229.192 and 2a01:4f8:0:1::add:2992, and helium.ns.hetzner.de to 193.47.99.5 and 2001:67c:192c::add:5.
Mail Servers
Mail for mailbuffer.de is handled by a single mail server, mail.geektool.de.
mailbuffer.de uses an identical mail server configuration to several other domains — among them yourbyte.de, geektool.de, schutzbach-drehtechnik.de and two more.
mail.geektool.de resolves to 188.40.100.200 and no other IP number.