stuhrpetersen.dk is a .dk domain served by 4 nameservers (ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com and 1 more). It was registered on 4 February 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.tutanota.de. The zone is DNSSEC-signed and validates, publishes a 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 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 |
| TXT Record |
|---|
| v=spf1 include:spf.tutanota.de -all |
| Policy | Record (stuhrpetersen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.tutanota.de -all |
| Policy | Record (_dmarc.stuhrpetersen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=s |
| www | Exists, no address |
| www vs bare domain | Neither resolves stuhrpetersen.dk: no address www.stuhrpetersen.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 2 CDS, 2 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… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 1570439305 |
| Primary NS (MNAME) | ns1.dnsimple.com |
| Responsible (RNAME) | admin@dnsimple.com |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-02-04 |
| Expires | 2027-02-28 (127d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 04:35:54 | 5150ms | 4 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-30 13:30:34 | 5395ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-28 11:48:21 | 2912ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-24 10:57:54 | 5783ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-30 04:59:40 | 5746ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-28 19:49:07 | 5948ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-08-27 19:37:24 | 4092ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-08-26 18:21:32 | 5728ms | 4 NS 0 A 1 MX | ❓ Unknown |
| 2026-08-26 15:36:20 | 3770ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-08-02 10:07:05 shown | 3016ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-01 05:16:50 | 991ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 22:31:22 | 4260ms | 4 NS 0 A 1 MX | 🔒 Secure |