cooperation21.de - robtex.com
cooperation21.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 81.88.34.241🇩🇪 CLOUDPIT81.88.32.0/20 | ||||||
| PTR | host230.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 2026-04-08 #2 | ||||||
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=1776217118 | ||||||
Subdomains
mail.cooperation21.de |
DNS History
8 records (6 active, 2 former)
●NScns1.alfahosting.info2015-06-25 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
●NScns2.alfahosting.info2015-06-25 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
●NScns3.alfahosting.info2015-06-25 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
○MXmail.cooperation21.de2015-06-25 → 2017-12-18 · 3 obs
● 2017-12-18 23:04:12
○ 2026-04-15 01:58:58
●MXmx03.secure-mailgate.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
●MXmx04.secure-mailgate.com2026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
○A109.237.138.342015-06-25 → 2017-12-18 · 3 obs
● 2017-12-18 23:04:12
○ 2026-04-15 01:58:58
●A81.88.34.2412026-04-15 → 2026-04-15 · 2 obs
● 2026-04-15 01:58:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | z.nic.de, f.nic.de, a.nic.de | - |
| cooperation21.de | cns1.alfahosting.info, cns2.alfahosting.info, cns3.alfahosting.info | - |
✅ Authoritative Response
Server:109.237.142.8
NS records: cns1.alfahosting.info, cns2.alfahosting.info, cns3.alfahosting.info
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cooperation21.de (unsigned zone)
⏱️ Timing
Total: 1152ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.88.34.241 |
| NS | 3 | cns1.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
cooperation21.de is the parent of mail.cooperation21.de.
IP Addresses
cooperation21.de resolves to one IP number: 81.88.34.241.
other host names including startrap.de, mail.augenstein-herecki.de, mail.joomla-webdesign-bonn.de, geiereck.de and mail.forschungsjournal.de share IP numbers with cooperation21.de.
Name Servers
cooperation21.de is delegated to three name servers cns1.alfahosting.info, cns2.alfahosting.info and cns3.alfahosting.info.
cooperation21.de at least partially shares name servers with other domains, for instance datarest.net, wemax.de, new-mind-marketing.de, xn--schtzenverein-quantwick-oberortwick-wwd.de and kornmuehlen.cc.
Host names with two IP numbers:
cns1.alfahosting.info points to: 2a01:64c0:0:5000::8 and 109.237.142.8.
cns2.alfahosting.info points to: 2a01:4f8:2b02:a88::105 and 148.251.254.105.
cns3.alfahosting.info points to: 2a02:2b80:101:5000::8 and 109.237.143.8.
Mail Servers
Two mail servers handle cooperation21.de: mx03.secure-mailgate.com and mx04.secure-mailgate.com.
cooperation21.de shares the same mail server setup as other domains, for instance paneele24.de, skip1frame.com, hausheliand.de, online-bidet.com and extrastahl.at.
cooperation21.de shares some mail servers with other domains, at least partially, for example zanasta.de and kulturpasst.de.
Host names with two IP numbers:
The host name mx03.secure-mailgate.com points to 46.243.88.174 and 46.243.88.176; the host name mx04.secure-mailgate.com points to 46.243.88.175 and 46.243.88.177.