detkoster.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 1 May 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.198.79.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 216.198.79.1 | 3600s | — | AS16509 | Amazon.com, Inc. | 216.198.79.0/24 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| google-site-verification=5RKWtIhjtVQtl3IZl0pp_gmSguqy-VPR4P_kZQdTNnE |
| Policy | Record (_dmarc.detkoster.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 152.53.189.149 (AS197540) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026051201 |
| 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 | 2026-05-01 |
| Expires | 2027-04-30 (188d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 00:39:10 | 562ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-21 15:06:53 | 487ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-19 18:18:14 | 847ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-19 18:08:08 | 534ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-16 16:07:43 | 391ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-15 12:07:09 | 1070ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 07:35:32 | 1186ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 18:02:01 | 396ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 17:06:45 | 770ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 00:28:19 shown | 2224ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 02:25:46 | 566ms | 3 NS 1 A 1 MX | 🔓 Insecure |