concrete-plus.de - robtex.com
concrete-plus.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a01:4f8:210:5237::57🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | hentschke-bau.de | ||||||
| A | 148.251.153.57🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2 | ||||||
| NS | ns1.first-ns.de ⭐ | ||||||
| A | 2a01:4f8:0:a101::a:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | ns1.first-ns.de | ||||||
| A | 213.239.242.238🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2 | ||||||
| PTR | ns1.first-ns.de | ||||||
| NS | robotns2.second-ns.de | ||||||
| A | 2a01:4f8:0:1::5ddc:2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | robotns2.second-ns.de | ||||||
| A | 213.133.100.103🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | robotns2.second-ns.de | ||||||
| NS | robotns3.second-ns.com | ||||||
| A | 2001:67c:192c::add:a3🇩🇪 NORIS-NETWORK2001:67c:192c::/48 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| A | 193.47.99.3🇩🇪 NORIS-NETWORK193.47.99.0/24 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| MX | mail.concrete-plus.de ⭐ | ||||||
| A | 2a01:4f8:210:5237::56🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | mail.hentschke-bau.de | ||||||
| A | 148.251.153.56🇩🇪 Hetzner148.251.0.0/16 HETZNER-RZ-BLK-ERX2 | ||||||
| PTR | mail.hentschke-bau.de | ||||||
| SOA | ns1.first-ns.dedns@hetzner.com 2026-02-12 #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=1775987750 | ||||||
Subdomains
mail.concrete-plus.de |
Same first word
concrete-plus.de |
DNS History
8 records (6 active, 2 former)
●NSns1.first-ns.de2015-07-20 → 2026-04-12 · 2 obs
● 2026-04-12 10:01:30
●NSrobotns2.second-ns.de2015-07-20 → 2026-04-12 · 2 obs
● 2026-04-12 10:01:30
●NSrobotns3.second-ns.com2015-07-20 → 2026-04-12 · 2 obs
● 2026-04-12 10:01:30
●MXmail.concrete-plus.de2015-07-20 → 2026-04-12 · 2 obs
● 2026-04-12 10:01:30
○A148.251.153.562015-07-20 → 2015-07-20 · 3 obs
○ 2015-11-19 07:37:40
○ 2026-04-12 10:01:30
●A148.251.153.572015-11-19 → 2026-04-12 · 3 obs
● 2015-11-19 07:37:40
● 2026-04-12 10:01:30
○A2a01:4f8:210:5237::562015-07-20 → 2015-07-20 · 3 obs
○ 2015-11-19 07:37:40
○ 2026-04-12 10:01:30
●A2a01:4f8:210:5237::572015-11-19 → 2026-04-12 · 3 obs
● 2015-11-19 07:37:40
● 2026-04-12 10:01:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| concrete-plus.de | ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com | - |
✅ Authoritative Response
Server:193.47.99.3
NS records: ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for concrete-plus.de (unsigned zone)
⏱️ Timing
Total: 626ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 148.251.153.57 |
| AAAA | 1 | 2a01:4f8:210:5237::57 |
| NS | 3 | ns1.first-ns.de, robotns2.second-ns.de... |
| MX | 1 | mail.concrete-plus.de (pri: 10) |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
Analysis
Hierarchy
The parent of mail.concrete-plus.de is concrete-plus.de.
IP Addresses
Two IP numbers are pointed to by concrete-plus.de: 2a01:4f8:210:5237::57 and 148.251.153.57.
other host names include hentschke-bau.org, hentschke-bau.de, hentschkebau.de, fibre-plus.com and hentschke-betonfertigteilwerk.de; they share IP numbers with concrete-plus.de.
Name Servers
concrete-plus.de is delegated to three name servers robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
concrete-plus.de at least partially shares name servers with other domains, for instance costrims.net, fmgruel.de, luna-park.ba, gameaddicted.de and festivalpark.de.
These name servers are commonly used alongside hydrogen.ns.hetzner.com.
Host names with two IP numbers:
robotns3.second-ns.com points to 2001:67c:192c::add:a3 and 193.47.99.3; ns1.first-ns.de points to 2a01:4f8:0:a101::a:1 and 213.239.242.238; robotns2.second-ns.de points to 2a01:4f8:0:1::5ddc:2 and 213.133.100.103.
Mail Servers
concrete-plus.de is handled by a single mail server, mail.concrete-plus.de.
mail.concrete-plus.de resolves to two IPs: 2a01:4f8:210:5237::56 and 148.251.153.56.