257.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 July 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.211.38 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod8-cph3.one.com, mx2.pub.mailpod8-cph3.one.com and 1 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 46.30.211.38 | 600s | domain-parking.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.pub.mailpod8-cph3.one.com | 185.164.14.102 | mx1.pub.mailpod8-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod8-cph3.one.com | 185.164.14.103 | mx2.pub.mailpod8-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod8-cph3.one.com | 185.164.14.104 | mx3.pub.mailpod8-cph3.one.com | AS51468 One.com A/S |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | E7531AB55E1935413AA5EC5366CF909D… |
| SMTP _25._tcp.mx1.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | BF2BAC81D64CD548F2920A7E0ADF7907… |
| SMTP _25._tcp.mx2.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | E7531AB55E1935413AA5EC5366CF909D… |
| SMTP _25._tcp.mx2.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | BF2BAC81D64CD548F2920A7E0ADF7907… |
| SMTP _25._tcp.mx3.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | E7531AB55E1935413AA5EC5366CF909D… |
| SMTP _25._tcp.mx3.pub.mailpod8-cph3.one.com | DANE-EE · SPKI · SHA-256 | BF2BAC81D64CD548F2920A7E0ADF7907… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092104 |
| 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 | 2019-07-09 |
| Expires | 2027-07-31 (286d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 23:25:07 | 1580ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 22:51:13 shown | 775ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-23 22:12:13 | 645ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-31 14:10:09 | 584ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-24 07:15:27 | 4821ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-22 05:15:01 | 1196ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-22 08:22:57 | 16831ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 00:41:10 | 1159ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-24 03:21:41 | 721ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 16:30:25 | 1190ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 11:42:07 | 950ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 08:56:01 | 1112ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-20 04:21:58 | 1285ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 12:52:10 | 1915ms | 2 NS 1 A 3 MX | 🔒 Secure |