letrengoring.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 26 July 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.13.37.57 is hosted by Microsoft Corporation (AS8075) in Norway. Mail is handled by letrengoring-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 51.13.37.57 | 3600s | — | AS8075 | Microsoft Corporation | 51.12.0.0/15 | 🇳🇴 Norway | Oslo |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | letrengoring-dk.mail.protection.outlook.com | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| TXT Record |
|---|
| MS=ms52406490 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (letrengoring.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www CNAME | ghs.googlehosted.com (all on googlehosted.com) |
| www vs bare domain | Different networks letrengoring.dk: 51.13.37.57 (AS8075) (all like this)www.letrengoring.dk: 172.253.130.121 2a00:1450:4010:c20::79 (AS15169) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026102001 |
| 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 | 2021-07-26 |
| Expires | 2027-07-31 (279d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 18:28:43 shown | 431ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 04:59:48 | 799ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 19:49:52 | 1057ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 12:05:41 | 1031ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 17:56:13 | 1317ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 19:51:42 | 870ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 15:44:46 | 5395ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 07:28:24 | 1158ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 14:44:55 | 1106ms | 2 NS 1 A 1 MX | 🔒 Secure |