dfb.dk - dns.ninja
dfb.dk
dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | b.nic.dk ⭐ | ||||||
| NS | c.nic.dk | ||||||
| NS | h.nic.dk | ||||||
| NS | l.nic.dk | ||||||
| NS | s.nic.dk | ||||||
| NS | t.nic.dk | ||||||
| TXT | DK zone updateEpoch 1782710101localtime Mon Jun 29 07:15:01 2026gmtime Mon Ju... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1782710108 | ||||||
Subdomains
fw.dfb.dk |
smtp-mx-own.dfb.dk |
Same first word
Similar names
DNS History
15 records (6 active, 9 former)
○NSns.andersenit.dk2015-07-13 → 2017-04-08 · 4 obs
● 2017-04-08 08:08:22
○ 2026-03-02 05:02:16
○ 2026-06-29 05:47:56
●NSns01.one.com2026-03-02 → 2026-06-29 · 3 obs
● 2026-03-02 05:02:16
● 2026-06-29 05:47:56
●NSns02.one.com2026-03-02 → 2026-06-29 · 3 obs
● 2026-03-02 05:02:16
● 2026-06-29 05:47:56
○NSns1.andersenit.dk2015-07-13 → 2017-04-08 · 4 obs
● 2017-04-08 08:08:22
○ 2026-03-02 05:02:16
○ 2026-06-29 05:47:56
○MXdfb-dk.mail.protection.outlook.com2015-12-20 → 2016-12-07 · 5 obs
● 2015-12-20 18:54:14
● 2016-12-07 23:15:48
○ 2017-04-08 08:08:22
○ 2026-06-29 05:47:56
○MXeu-esec-01.heimdalsecurity.com2026-03-02 → 2026-03-02 · 4 obs
● 2026-03-02 05:02:16
○ 2026-03-21 06:01:44
○ 2026-06-29 05:47:56
○MXeu-esec-02.heimdalsecurity.com2026-03-02 → 2026-03-02 · 4 obs
● 2026-03-02 05:02:16
○ 2026-03-21 06:01:44
○ 2026-06-29 05:47:56
●MXmx1-dk.centerasecurity.dk2026-03-21 → 2026-06-29 · 3 obs
● 2026-03-21 06:01:44
● 2026-06-29 05:47:56
○MXmx12.comendosystems.com2017-04-08 → 2017-04-08 · 4 obs
● 2017-04-08 08:08:22
○ 2026-03-02 05:02:16
○ 2026-06-29 05:47:56
●MXmx2-dk.centerasecurity.dk2026-03-21 → 2026-06-29 · 3 obs
● 2026-03-21 06:01:44
● 2026-06-29 05:47:56
●MXmx3-dk.centerasecurity.dk2026-03-21 → 2026-06-29 · 3 obs
● 2026-03-21 06:01:44
● 2026-06-29 05:47:56
○MXmx6.comendosystems.nett2017-04-08 → 2017-04-08 · 4 obs
● 2017-04-08 08:08:22
○ 2026-03-02 05:02:16
○ 2026-06-29 05:47:56
○MXsmtp-mx-own.dfb.dk2015-07-13 → 2015-10-11 · 4 obs
● 2015-10-11 03:00:36
○ 2015-12-20 18:54:14
○ 2026-06-29 05:47:56
●A46.30.215.1912026-03-02 → 2026-06-29 · 3 obs
● 2026-03-02 05:02:16
● 2026-06-29 05:47:56
○A87.238.248.2472015-07-13 → 2017-04-08 · 4 obs
● 2017-04-08 08:08:22
○ 2026-03-02 05:02:16
○ 2026-06-29 05:47:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | b.nic.dk, h.nic.dk, t.nic.dk, c.nic.dk... | - |
| dfb.dk | ns01.one.com, ns02.one.com | - |
✅ Authoritative Response
Server:195.206.121.10
NS records: ns01.one.com, ns02.one.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1035ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 46.30.215.191 |
| NS | 2 | ns01.one.com, ns02.one.com |
| MX | 3 | mx3-dk.centerasecurity.dk (pri: 20), mx2-dk.centerasecurity.dk (pri: 10)... |
| TXT | 2 | yahoo-verification-key=QQGar9oL6bApgKIXT, v=spf1 include:_dfb_dk.spf-protect.com - |
| SOA | 1 | ns01.one.com hostmaster.one.com |
Analysis
Hierarchy
fw.dfb.dk and smtp-mx-own.dfb.dk are both subdomains of dfb.dk.
IP Addresses
dfb.dk resolves to one IP address: 46.30.215.191.
deltec.dk, optilogg.com, azonmic.org and two other host names share IP numbers with dfb.dk.
Name Servers
Two name servers handle the delegation for dfb.dk: ns01.one.com and ns02.one.com.
dfb.dk uses the same name servers as several other domains — among them rg.dk, stetter.co.uk, lihp.info and two more.
dfb.dk is at least partially co-delegated on name servers with other domains, such as hrportal.dk.
ns01.one.com and ns02.one.com both carry two IP addresses. The A records for ns01.one.com are 195.206.121.10 and 2001:67c:28cc::10; the A records for ns02.one.com are 185.10.11.10 and 2001:67c:3c0::10.
Mail Servers
dfb.dk uses three mail servers — mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and mx3-dk.centerasecurity.dk.
dfb.dk has at least partial mail server overlap with other domains such as dfd.dk, ishoj.dk, prologo.dk and two more.
Hosts that point to four IP numbers:
mx1-dk.centerasecurity.dk maps to the following IP addresses: 89.233.19.127, 89.233.19.188, 128.76.60.167 and 128.76.60.187.
mx2-dk.centerasecurity.dk maps to the following IP addresses: 89.233.19.128, 89.233.19.129, 128.76.60.168 and 128.76.60.169.
Hostnames that resolve to two IP addresses:
mx3-dk.centerasecurity.dk resolves to two addresses: 89.233.19.129 and 128.76.60.187.
mx1-dk.centerasecurity.dk along with mx3-dk.centerasecurity.dk each resolve to 128.76.60.187 IP addresses.
mx2-dk.centerasecurity.dk along with mx3-dk.centerasecurity.dk each resolve to 89.233.19.129 IP addresses.