redhjernen.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 24 August 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by redhjernen-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 2.31.88.14 | 3600s | static.14.88.31.2.clients.your-server.de | AS24940 | — | — | 🇩🇪 Germany | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.152 |
| 🔶 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=xOuxJ4PwEVgn4gaC6LPjHQ6B8eXYLy1gzhpkLhyu2OA |
| MS=ms71825219 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (redhjernen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.redhjernen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 2.31.88.14 (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 |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-redhjernen-dk._domainkey.genoplivningdk.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-redhjernen-dk._domainkey.genoplivningdk.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
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 | 2026102200 |
| 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 | 2018-08-24 |
| Expires | 2027-08-31 (311d) |
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 |
|---|---|
| hjernehjertehjaelp.dk | Simply.com A/S |
| hjertesikkerzone.dk | Simply.com A/S |
| hjertesikrezoner.dk | Simply.com A/S |
| hjertestarterbranchen.dk | Punktum dk A/S (direct) |
| savethebrain.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 12:48:44 shown | 1841ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 22:57:17 | 2860ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 22:33:52 | 1325ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 13:30:31 | 1531ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 14:01:02 | 1715ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 07:15:22 | 959ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 01:25:18 | 1334ms | 4 NS 1 A 1 MX | 🔒 Secure |