a.ns.certmanager.de - robtex.com
a.ns.certmanager.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 178.21.144.21🇩🇪 REGFISH-AS178.21.144.0/24 Vultr Customer Route | ||||||
| PTR | a.regfish-ns.net | ||||||
ns.certmanager.de
| DNSSEC | ⚠️ Not signed | ||||||
Previously NS for
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
●A178.21.144.212026-02-14 → 2026-05-13 · 3 obs
○ 2017-07-19 13:41:50
● 2026-02-14 22:53:36
● 2026-05-13 12:46:32
● 2026-02-14 22:53:36
● 2026-05-13 12:46:32
○A52.57.28.602017-07-19 → 2017-07-19 · 3 obs
● 2017-07-19 13:41:50
○ 2026-02-14 22:53:36
○ 2026-05-13 12:46:32
○ 2026-02-14 22:53:36
○ 2026-05-13 12:46:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| certmanager.de | a.regfish-ns.net, c.regfish-ns.net, b.regfish-ns.net | - |
✅ Authoritative Response
Server:178.21.145.21
NS records: a.regfish-ns.net, c.regfish-ns.net, b.regfish-ns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certmanager.de (unsigned zone)
⏱️ Timing
Total: 728ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 178.21.144.21 |
Analysis
IP Addresses
a.ns.certmanager.de points to a single IP: 178.21.144.21.
Other host names, for instance a.ns.zenober.com, a.ns.onesty-tech.de, a.ns.networklabs.de, a.ns.sunblume.de and a.ns.hof-emsauen.de share IP numbers with a.ns.certmanager.de.