sejer-nielsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.152 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod14-cph3.one.com, mx2.pub.mailpod14-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.111.240.152 | 3600s | webcluster25.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod14-cph3.one.com | 185.10.9.212 | mx1.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod14-cph3.one.com | 185.10.9.213 | mx2.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod14-cph3.one.com | 185.10.9.214 | mx3.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod14-cph3.one.com | 185.10.9.215 | mx4.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.111.240.152 |
| 🔶 Autoconfig | 77.111.240.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:c3:53a7:2e9f:d28d | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 77.111.240.152 2a02:2350:5:102:c3:53a7:2e9f:d28d (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network sejer-nielsen.dk: 77.111.240.152 2a02:2350:5:102:c3:53a7:2e9f:d28d (AS51468) www.sejer-nielsen.dk: 77.111.240.152 2a02:2350:5:102:c3:53a7:2e9f:d28d (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx2.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx3.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx4.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082202 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:24:01 shown | 651ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-25 16:20:17 | 803ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-06 15:18:33 | 780ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-28 06:07:46 | 984ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-22 23:03:34 | 2932ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-21 22:59:56 | 4793ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-18 20:33:17 | 8934ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-28 15:24:33 | 700ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-28 03:01:48 | 3335ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 01:05:53 | 930ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 20:30:43 | 824ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 11:53:18 | 1349ms | 2 NS 1 A 4 MX | 🔒 Secure |