certag.de - robtex.com
certag.de
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns2.commerzbank.com ⭐ | ||||||
| A | 212.149.48.134🇩🇪 COMMERZBANK212.149.32.0/19 Commerzbank AG | ||||||
| PTR | ns2.commerzbank.com | ||||||
| NS | ns3.commerzbank.com | ||||||
| A | 212.149.48.137🇩🇪 COMMERZBANK212.149.32.0/19 Commerzbank AG | ||||||
| PTR | ns3.commerzbank.com | ||||||
| NS | ns4.commerzbank.com | ||||||
| A | 193.108.159.13🇩🇪 DKB193.108.159.0/24 Commerzbank AG | ||||||
| PTR | ns4.commerzbank.com | ||||||
| NS | ns5.commerzbank.com | ||||||
| A | 193.108.159.14🇩🇪 DKB193.108.159.0/24 Commerzbank AG | ||||||
| PTR | ns5.commerzbank.com | ||||||
| MX | mail.commerzbank.com ⭐ | ||||||
| A | 212.149.50.150🇩🇪 COMMERZBANK212.149.32.0/19 Commerzbank AG | ||||||
| PTR | mail.commerzbank.com | ||||||
| TXT | v=spf1 mx -all | ||||||
| SOA | ns2.commerzbank.comdns@commerzbank.com serial=132 | ||||||
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=1783818738 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns2.commerzbank.com2026-06-24 → 2026-07-12 · 2 obs
● 2026-07-12 01:43:18
●NSns3.commerzbank.com2026-06-24 → 2026-07-12 · 2 obs
● 2026-07-12 01:43:18
●NSns4.commerzbank.com2026-06-24 → 2026-07-12 · 2 obs
● 2026-07-12 01:43:18
●NSns5.commerzbank.com2026-06-24 → 2026-07-12 · 2 obs
● 2026-07-12 01:43:18
●MXmail.commerzbank.com2026-06-24 → 2026-07-12 · 2 obs
● 2026-07-12 01:43:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| certag.de | ns2.commerzbank.com, ns3.commerzbank.com, ns4.commerzbank.com, ns5.commerzbank.com | - |
✅ Authoritative Response
Server:193.108.159.13
NS records: ns2.commerzbank.com, ns3.commerzbank.com, ns4.commerzbank.com, ns5.commerzbank.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certag.de (unsigned zone)
⏱️ Timing
Total: 1663ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns2.commerzbank.com, ns3.commerzbank.com... |
| MX | 1 | mail.commerzbank.com (pri: 20) |
| TXT | 1 | v=spf1 mx -all |
| SOA | 1 | ns2.commerzbank.com dns.commerzbank.com |
Analysis
Name Servers
The NS records for certag.de point to four name servers: ns2.commerzbank.com, ns3.commerzbank.com, ns4.commerzbank.com and ns5.commerzbank.com.
certag.de partially shares its NS delegation with several other domains, including comdirect-bank-ag.co.at, coco-index.de, my-commerzbank.ch and two others.
The hosts ns2.commerzbank.com, ns3.commerzbank.com, ns4.commerzbank.com and ns5.commerzbank.com all resolve to exactly one IP address each: 212.149.48.134, 212.149.48.137, 193.108.159.13 and 193.108.159.14 respectively.
Mail Servers
The sole mail server for certag.de is mail.commerzbank.com.
Mail server setup for certag.de matches that of other domains, among them commerzbank.dk.
There is at least a partial MX overlap between certag.de and other domains, including coba.cz, commerzbank.com.br, dresdnerbank.de and two others.
The mail servers mail1.commerzbank.com and memo.commerzbank.com regularly co-occur with these mail servers.
mail.commerzbank.com points to one IP number — 212.149.50.150.