ross-koereskole.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 14 October 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.141 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.141 | 3600s | webcluster14.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:6e:1a3:8e74:48bf | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (ross-koereskole.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.ross-koereskole.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; |
| www | 77.111.240.141 2a02:2350:5:102:6e:1a3:8e74:48bf (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network ross-koereskole.dk: 77.111.240.141 2a02:2350:5:102:6e:1a3:8e74:48bf (AS51468) www.ross-koereskole.dk: 77.111.240.141 2a02:2350:5:102:6e:1a3:8e74:48bf (AS51468) |
| 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 | 2026101701 |
| 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 | 2019-10-14 |
| Expires | 2027-10-31 (375d) |
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 |
|---|---|---|---|
| 2026-10-17 17:44:36 shown | 1467ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 15:43:43 | 549ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 05:16:19 | 458ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 06:41:03 | 502ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 03:09:58 | 1434ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 22:47:30 | 574ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 22:52:24 | 697ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-28 07:09:49 | 882ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-02 21:14:56 | 8929ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-08 16:22:12 | 24694ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-30 15:15:27 | 897ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 06:36:03 | 2448ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 06:55:58 | 1197ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 20:56:32 | 2554ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 13:58:05 | 2814ms | 2 NS 1 A 4 MX | 🔒 Secure |