cortina.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 4 August 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.157.125.162 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| ns4.simply.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 78.157.125.162 | — | 78-157-125-162.norlyscustomer.net | AS39642 | Sinal A/S | 78.157.96.0/19 | 🇩🇰 Denmark | Aalborg |
| TXT Record |
|---|
| apple-domain=rzT7SxngV4oV3A30 |
| v=spf1 include:icloud.com ~all |
| Policy | Record (cortina.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:icloud.com ~all |
| www | 78.157.125.162 (AS39642) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 5/10 · 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 | 2026050305 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2005-08-04 |
| Expires | 2035-08-31 (3238d) |
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).
| Domain | Registrar |
|---|---|
| jotak.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:45:59 | 973ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 11:31:16 | 1076ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-08 03:27:45 | 634ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-25 14:52:10 | 798ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 05:38:30 | 2411ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 22:49:07 | 3098ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 22:30:11 shown | 909ms | 4 NS 1 A 2 MX | 🔒 Secure |