concept21.de - robtex.com
concept21.de
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=1781510434 | ||||||
Same first word
concept21.com.ua |
concept21.nl |
concept21.co.jp |
concept21.de |
concept21.com |
concept21.fr |
concept21.net |
concept21.ch |
Similar names
DNS History
12 records (6 active, 6 former)
●NSns1033.ui-dns.biz2020-02-05 → 2026-06-15 · 3 obs
● 2020-02-05 11:44:22
● 2026-06-15 08:25:46
●NSns1033.ui-dns.com2020-02-05 → 2026-06-15 · 3 obs
● 2020-02-05 11:44:22
● 2026-06-15 08:25:46
●NSns1033.ui-dns.de2020-02-05 → 2026-06-15 · 3 obs
● 2020-02-05 11:44:22
● 2026-06-15 08:25:46
●NSns1033.ui-dns.org2020-02-05 → 2026-06-15 · 3 obs
● 2020-02-05 11:44:22
● 2026-06-15 08:25:46
○NSns55.1und1.de2015-05-24 → 2016-12-06 · 4 obs
● 2016-12-06 05:28:46
○ 2020-02-05 11:44:22
○ 2026-06-15 08:25:46
○NSns56.1und1.de2015-05-24 → 2016-12-06 · 4 obs
● 2016-12-06 05:28:46
○ 2020-02-05 11:44:22
○ 2026-06-15 08:25:46
●MXmx00.ionos.de2026-03-28 → 2026-06-15 · 3 obs
● 2026-03-28 21:17:30
● 2026-06-15 08:25:46
○MXmx00.kundenserver.de2015-05-24 → 2020-02-05 · 4 obs
● 2020-02-05 11:44:22
○ 2026-03-28 21:17:30
○ 2026-06-15 08:25:46
●MXmx01.ionos.de2026-03-28 → 2026-06-15 · 3 obs
● 2026-03-28 21:17:30
● 2026-06-15 08:25:46
○MXmx01.kundenserver.de2015-05-24 → 2020-02-05 · 4 obs
● 2020-02-05 11:44:22
○ 2026-03-28 21:17:30
○ 2026-06-15 08:25:46
○A217.160.223.2412016-12-06 → 2016-12-06 · 4 obs
● 2016-12-06 05:28:46
○ 2020-02-05 11:44:22
○ 2026-06-15 08:25:46
○A87.106.170.292015-05-24 → 2016-04-22 · 4 obs
● 2016-04-22 21:59:08
○ 2016-12-06 05:28:46
○ 2026-06-15 08:25:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| concept21.de | ns1033.ui-dns.com, ns1033.ui-dns.de, ns1033.ui-dns.biz, ns1033.ui-dns.org | - |
✅ Authoritative Response
Server:217.160.80.33
NS records: ns1033.ui-dns.com, ns1033.ui-dns.de, ns1033.ui-dns.biz, ns1033.ui-dns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for concept21.de (unsigned zone)
⏱️ Timing
Total: 1128ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns1033.ui-dns.com, ns1033.ui-dns.de... |
| MX | 2 | mx01.ionos.de (pri: 10), mx00.ionos.de (pri: 10) |
| TXT | 1 | v=spf1 include:_spf-eu.ionos.com ~all |
| SOA | 1 | ns1033.ui-dns.biz hostmaster.1und1.de |
Analysis
Name Servers
The domain concept21.de is delegated to these four name servers: ns1033.ui-dns.biz, ns1033.ui-dns.com, ns1033.ui-dns.de and ns1033.ui-dns.org.
The name servers of concept21.de overlap at least partially with those of other domains — among them selahwc.com, china-antik.de, germanmedina.es and two more.
The name servers ns1024.ui-dns.com, ns1017.ui-dns.org and ns1034.ui-dns.de are commonly seen alongside these name servers.
Each of the four hosts ns1033.ui-dns.biz, ns1033.ui-dns.com, ns1033.ui-dns.de and ns1033.ui-dns.org has two IP addresses. ns1033.ui-dns.biz points to 217.160.81.33 and 2001:8d8:fe:53:0:d9a0:5121:100. ns1033.ui-dns.com points to 217.160.82.33 and 2001:8d8:fe:53:0:d9a0:5221:100. ns1033.ui-dns.de points to 217.160.80.33 and 2001:8d8:fe:53:0:d9a0:5021:100. ns1033.ui-dns.org points to 217.160.83.33 and 2001:8d8:fe:53:0:d9a0:5321:100.
Mail Servers
The MX records for concept21.de point to two mail servers: mx00.ionos.de and mx01.ionos.de.
concept21.de has the same mail server arrangement as a number of other domains, for example edi-service-center.de, danose.de, alftal-kauftal.de and two more.
concept21.de has mail servers in common with other domains — huko.de being one example.
Both mx00.ionos.de and mx01.ionos.de have a single IP address each — mx00.ionos.de resolves to 212.227.15.41 while mx01.ionos.de resolves to 217.72.192.67.