oliverholretz.dk is a .dk domain served by 4 nameservers (ns1-33.azure-dns.com, ns2-33.azure-dns.net, ns3-33.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.153.39 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 20.50.153.39 | 3600s | — | AS8075 | Microsoft Corporation | 20.48.0.0/12 | 🇳🇱 The Netherlands | Amsterdam |
| TXT Record |
|---|
| 3n55rwkm5nc4jc6xdq8xtsw5hdqfrxj6 |
| have-i-been-pwned-verification=bef13ede1f5db9fc203320e9e7d0e743 |
| protonmail-verification=4fee849504c65be52939ee936e5d31709ee131b5 |
| v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (oliverholretz.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch mx ~all |
| Policy | Record (_dmarc.oliverholretz.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
DNS lookups: 3/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2021112100 |
| Primary NS (MNAME) | ns1-33.azure-dns.com |
| Responsible (RNAME) | dns@hetzner.com |
| Refresh | 86400s |
| Retry | 10800s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 00:47:11 shown | 481ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-27 17:21:48 | 694ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-18 07:53:07 | 819ms | 4 NS 1 A 2 MX | 🔓 Insecure |