realtimesystem.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 6 March 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 37.27.212.226 is hosted by Hetzner Online GmbH (AS24940) in Finland. Mail is handled by mail.realtimesystem.dk. 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 |
|---|---|---|---|---|---|---|---|
| 37.27.212.226 | 600s | static.226.212.27.37.clients.your-server.de | AS24940 | Hetzner Online GmbH | 37.27.0.0/16 | 🇫🇮 Finland | Helsinki |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mail.realtimesystem.dk | 37.27.212.226 | static.226.212.27.37.clients.your-server.de | AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | realtimesystem.dk → 37.27.212.226 |
| 🔶 Autoconfig | realtimesystem.dk → 37.27.212.226 |
| TXT Record |
|---|
| v=spf1 a:mail.realtimesystem.dk include:spf.ymlp.com -all include:servers.mcsv.net ?all |
| Policy | Record (realtimesystem.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.realtimesystem.dk include:spf.ymlp.com -all include:servers.mcsv.net ?all |
| www CNAME | realtimesystem.dk (all on realtimesystem.dk) → 37.27.212.226 (AS24940) |
| 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: 3/10 · policy: ?all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.realtimesystem.dk | realtimesystem.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| 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 | 2023-03-06 |
| Expires | 2027-03-05 (132d) |
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 |
|---|---|
| avantgarde-bkl.dk | Punktum dk A/S (direct) |
| fynbus-drift.dk | Simply.com A/S |
| kortsiden.dk | Punktum dk A/S (direct) |
| misa-net.dk | Simply.com A/S |
| misanet.dk | Simply.com A/S |
| onlineanalyse.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 20:23:35 shown | 850ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 22:04:57 | 1045ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 21:53:43 | 755ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 21:07:06 | 610ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 23:26:11 | 873ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 01:20:48 | 694ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-02 08:58:03 | 1007ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 01:14:43 | 739ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 05:53:44 | 597ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 18:26:17 | 694ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 20:33:55 | 612ms | 3 NS 1 A 1 MX | 🔒 Secure |