cyf.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 November 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.39 is hosted by One.com A/S (AS51468) in Denmark. 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, publishes a 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.215.39 | — | webcluster2.webpod15-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10e:8039:b93a:9135:f0ab | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| Policy | Record (_dmarc.cyf.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 46.30.215.10 2a02:2350:5:10e:54:2192:c370:f9f9 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network cyf.dk: 46.30.215.10 2a02:2350:5:10e:54:2192:c370:f9f9 (AS51468) www.cyf.dk: 46.30.215.10 2a02:2350:5:10e:54:2192:c370:f9f9 (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.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 | 2026060601 |
| 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 | 1998-11-17 |
| Expires | 2026-12-31 (74d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 12:26:51 | 445ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-05 19:26:23 | 2021ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-07 09:49:33 | 609ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-04 04:06:16 | 577ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-27 09:13:21 | 784ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-06 08:39:17 | 954ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-16 00:02:48 | 6822ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-06 06:25:04 | 1029ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-04 21:32:07 | 1599ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-01 02:49:24 | 748ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 17:22:37 | 1683ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 17:18:48 | 2334ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 02:43:00 | 2039ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 23:26:09 shown | 785ms | 2 NS 1 A 4 MX | 🔒 Secure |