defender.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 November 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.52.48.224 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 86.52.48.224 | 43200s | 86-52-48-224.norlyscustomer.net | AS39642 | Sinal A/S | 86.52.0.0/16 | 🇩🇰 Denmark | Viborg |
| TXT Record |
|---|
| protonmail-verification=8e626e250cb55df9315e1a0a1555ff445744557b |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (defender.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.defender.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| 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 | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026080101 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2021-11-08 |
| Expires | 2027-11-07 (376d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 11:47:39 | 561ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-04 04:12:25 | 721ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-24 01:47:46 | 639ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-04 11:07:15 | 527ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 13:13:32 shown | 652ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-03 23:01:29 | 1071ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-17 05:25:49 | 5030ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-03 10:02:12 | 7228ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-20 01:05:49 | 880ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 01:36:28 | 2259ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 01:30:03 | 772ms | 2 NS 1 A 2 MX | 🔒 Secure |