helder.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 28 January 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-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 |
|---|---|---|---|---|---|---|---|
| 46.30.215.132 | 3600s | webcluster1.webpod17-cph3.one.com | AS51468 | — | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod10-cph3.one.com | 104.37.34.70 | mx1.pub.mailpod10-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod10-cph3.one.com | 104.37.34.71 | mx2.pub.mailpod10-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod10-cph3.one.com | 104.37.34.72 | mx3.pub.mailpod10-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod10-cph3.one.com | 104.37.34.73 | mx4.pub.mailpod10-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:106:27:bdff:ffe2:54cb | 3600s | — | AS51468 | — | — | — | — |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (helder.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| www | 46.30.215.132 2a02:2350:5:106:27:bdff:ffe2:54cb (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network helder.dk: 46.30.215.132 2a02:2350:5:106:27:bdff:ffe2:54cb (AS51468) www.helder.dk: 46.30.215.132 2a02:2350:5:106:27:bdff:ffe2:54cb (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061402 |
| 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 | 2010-01-28 |
| Expires | 2027-01-31 (98d) |
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 |
|---|---|---|---|
| 2026-10-22 04:38:04 | 686ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-13 15:57:26 | 1394ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-02 21:31:03 | 463ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 20:47:48 | 816ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-31 08:04:10 | 603ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 10:38:55 | 1186ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-14 12:00:10 | 9027ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-31 08:40:06 | 1014ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-30 22:33:34 | 788ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 19:17:59 | 1918ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 03:50:59 | 740ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 01:01:07 | 758ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 14:43:36 | 1628ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 06:00:45 shown | 2996ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 00:48:15 | 944ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 11:20:25 | 2518ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 11:13:53 | 868ms | 2 NS 1 A 4 MX | 🔒 Secure |