seifen.dk is a .dk domain served by 3 nameservers (ns1.hyp.net, ns2.hyp.net, ns3.hyp.net). It was registered on 27 March 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 194.63.248.52 is hosted by Domeneshop AS (AS12996) in Norway. Mail is handled by mail.tutanota.de. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 194.63.248.52 | 3600s | bristol.domeneshop.no | AS12996 | Domeneshop AS | 194.63.248.0/21 | 🇳🇴 Norway | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | 3600s | mail.tutanota.de | 185.205.69.211 185.205.69.213 185.205.69.214 |
mail.w11.tutanota.de mail.w13.tutanota.de mail.w14.tutanota.de |
AS210909 Tutao GmbH AS210909 Tutao GmbH AS210909 Tutao GmbH |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:5b40:0:248::52 | 3600s | — | AS12996 | Domeneshop AS | 2a01:5b40:0:0:0:0:0:0/37 | 🇳🇴 Norway | — |
| TXT Record |
|---|
| t-verify=55ca6808db027e898188f32d6cc8efa2 |
| v=spf1 include:spf.tutanota.de -all |
| Policy | Record (seifen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.tutanota.de -all |
| Policy | Record (_dmarc.seifen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=s |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 20190723 |
| max_age | 86400s |
| Policy MX | mail.tutanota.de |
| www | 194.63.248.52 2a01:5b40:0:248::52 (AS12996) (address records, no CNAME) |
| www vs bare domain | Same network seifen.dk: 194.63.248.52 2a01:5b40:0:248::52 (AS12996) www.seifen.dk: 194.63.248.52 2a01:5b40:0:248::52 (AS12996) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.tutanota.de | RSA · ~2048 bit |
| s2 | s2.domainkey.tutanota.de | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.tutanota.de | DANE-EE · Full cert · SHA-256 | D141F8F3A4AAC2E4D2677AAFCC723D8E… |
| SMTP _25._tcp.mail.tutanota.de | DANE-EE · SPKI · SHA-256 | 5AE0D6DC8A713441003F578C5A1D4D70… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 1788785504 |
| Primary NS (MNAME) | ns1.hyp.net |
| Responsible (RNAME) | hostmaster@domeneshop.no |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Domeneshop AS |
| Registered | 2025-03-27 |
| Expires | 2030-03-26 (1248d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 22:23:03 | 2474ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 22:01:48 | 983ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 01:36:58 shown | 884ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-12 00:51:17 | 1043ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 19:24:34 | 1198ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-21 17:18:42 | 1040ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 18:59:53 | 1076ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 21:43:48 | 1048ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 21:36:42 | 1173ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 14:44:57 | 2054ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 21:50:59 | 771ms | 3 NS 1 A 1 MX | 🔒 Secure |