checkblau.de - robtex.com
checkblau.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a03:4000:61:35a3::18:827🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH | ||||||
| A | 202.61.232.169🇩🇪 netcup-AS202.61.232.0/24 | ||||||
| NS | root-dns.netcup.net ⭐ | ||||||
| A | 2a03:4000:0:1::e1e1🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH | ||||||
| PTR | root-dns.netcup.net | ||||||
| A | 46.38.225.225🇩🇪 netcup-AS46.38.225.0/24 | ||||||
| PTR | root-dns.netcup.net | ||||||
| NS | second-dns.netcup.net | ||||||
| A | 2a03:4000:2:24b::c7c7🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH | ||||||
| PTR | second-dns.netcup.net | ||||||
| A | 37.221.199.199🇩🇪 netcup-AS37.221.196.0/22 | ||||||
| PTR | second-dns.netcup.net | ||||||
| NS | third-dns.netcup.net | ||||||
| A | 2a03:4001:0:106::3f44🇩🇪 netcup-AS2a03:4001::/32 NETCUP-GMBH | ||||||
| PTR | third-dns.netcup.net | ||||||
| A | 188.68.63.68🇩🇪 netcup-AS188.68.63.0/24 NETCUP-GMBH | ||||||
| PTR | third-dns.netcup.net | ||||||
| MX | mail.checkblau.de ⭐ | ||||||
| MX | mxe8ab.netcup.net(50) | ||||||
| A | 2a03:4000:0:2d8:49f:78ff:fe8d:cde9🇩🇪 netcup-AS2a03:4000::/32 NETCUP-GMBH | ||||||
| PTR | mxe8ab.netcup.net | ||||||
| A | 202.61.232.171🇩🇪 netcup-AS202.61.232.0/24 | ||||||
| PTR | mxe8ab.netcup.net | ||||||
| TXT | v=spf1 mx a include:_spf.webhosting.systems ~all | ||||||
| SOA | root-dns.netcup.netdnsadmin@netcup.net 2026-03-14 #45 | ||||||
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=1777051178 | ||||||
Same first word
checkblau.de |
Similar names
DNS History
7 records (7 active, 0 former)
●NSroot-dns.netcup.net2026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●NSsecond-dns.netcup.net2026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●NSthird-dns.netcup.net2026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●MXmail.checkblau.de2026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●MXmxe8ab.netcup.net2026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●A202.61.232.1692026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
●A2a03:4000:61:35a3::18:8272026-03-08 → 2026-04-24 · 2 obs
● 2026-04-24 17:36:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| checkblau.de | root-dns.netcup.net, second-dns.netcup.net, third-dns.netcup.net | - |
✅ Authoritative Response
Server:46.38.225.225
NS records: root-dns.netcup.net, second-dns.netcup.net, third-dns.netcup.net
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at de: Error: DNS query timeout: 194.0.0.53 for DNSKEY de
⏱️ Timing
Total: 4010ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.61.232.169 |
| AAAA | 1 | 2a03:4000:61:35a3::18:827 |
| NS | 3 | root-dns.netcup.net, second-dns.netcup.net... |
| MX | 2 | mxe8ab.netcup.net (pri: 50), mail.checkblau.de (pri: 10) |
| TXT | 1 | v=spf1 mx a include:_spf.webhosting.syst |
| SOA | 1 | root-dns.netcup.net dnsadmin.netcup.net |
Analysis
IP Addresses
checkblau.de points to two IPs: 2a03:4000:61:35a3::18:827 and 202.61.232.169.
Other host names, for instance gam4server.de, radiomuseum-wertingen.de, www.ratiopac.com, frischkost-lieferservice.de and ringe-und-mehr.de share IP numbers with checkblau.de.
Name Servers
checkblau.de is delegated to name servers root-dns.netcup.net, second-dns.netcup.net and third-dns.netcup.net.
checkblau.de at least partially shares name servers with other domains such as weinaehr.de, f-web.de, mitfahrbus.de, aaaxl.de and innfeed.at.
Host names with two IP numbers:
root-dns.netcup.net points to 2a03:4000:0:1::e1e1 and 46.38.225.225.
second-dns.netcup.net points to 2a03:4000:2:24b::c7c7 and 37.221.199.199.
third-dns.netcup.net points to 2a03:4001:0:106::3f44 and 188.68.63.68.
Mail Servers
Two mail servers handle checkblau.de: mail.checkblau.de and mxe8ab.netcup.net.
checkblau.de shares mail servers with other domains at least in part, for instance timetax.de, 0rpg.com, bootanimation.de, nuecke.de and anthes.org.
Host names with two IP numbers: mxe8ab.netcup.net points to 2a03:4000:0:2d8:49f:78ff:fe8d:cde9 and 202.61.232.171.