ersej.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 5 November 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.162 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-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 this 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.162 | 3600s | webcluster35.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.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:8010:558e:451f:7447 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | Exists, no address |
| www vs bare domain | Same network ersej.dk: 77.111.240.162 2a02:2350:5:102:8010:558e:451f:7447 (AS51468) www.ersej.dk: 2a02:2350:5:102:8010:558e:451f:7447 (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.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 068A81EDC98C58D5D494EDF2924D5F50… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 068A81EDC98C58D5D494EDF2924D5F50… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 068A81EDC98C58D5D494EDF2924D5F50… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 068A81EDC98C58D5D494EDF2924D5F50… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081501 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-11-05 |
| Expires | 2026-11-30 (43d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 00:45:08 | 1039ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-01 01:08:55 | 818ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 11:29:40 | 1287ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-16 09:44:48 | 767ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-08 07:41:00 | 1641ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-16 02:16:03 shown | 2498ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-17 13:08:35 | 3022ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-08 20:43:06 | 3044ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 02:48:03 | 985ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 20:49:50 | 1179ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 08:15:56 | 588ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 08:15:33 | 1183ms | 2 NS 1 A 4 MX | 🔒 Secure |