sereen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 December 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.15 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.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 |
|---|---|---|---|---|---|---|---|
| 46.30.215.15 | 3600s | webcluster1.webpod15-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.mailpod15-cph3.g1i.one.com | 104.37.35.36 | mx1.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.mailpod15-cph3.g1i.one.com | 104.37.35.37 | mx2.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.mailpod15-cph3.g1i.one.com | 104.37.35.38 | mx3.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.mailpod15-cph3.g1i.one.com | 104.37.35.39 | mx4.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10e:7f:d071:b0a0:b568 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 46.30.215.15 2a02:2350:5:10e:7f:d071:b0a0:b568 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network sereen.dk: 46.30.215.15 2a02:2350:5:10e:7f:d071:b0a0:b568 (AS51468) www.sereen.dk: 46.30.215.15 2a02:2350:5:10e:7f:d071:b0a0:b568 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091701 |
| 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 | ONE.COM A/S |
| Registered | 2018-12-03 |
| Expires | 2026-12-31 (69d) |
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 |
|---|---|---|---|
| 2026-10-20 15:01:17 | 1663ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 10:01:14 | 780ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 04:54:15 shown | 744ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-12 10:48:58 | 724ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 23:35:22 | 804ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 10:46:50 | 718ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-18 12:33:31 | 3439ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-19 03:47:50 | 1658ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-29 23:29:12 | 648ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-21 06:29:35 | 561ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 16:41:01 | 1401ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 11:32:20 | 1382ms | 2 NS 1 A 4 MX | 🔒 Secure |