3xd.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 6 January 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.43.11 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by 3xd-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 |
|---|---|---|---|---|---|---|---|
| 185.21.43.11 | 3600s | linux11.scannet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com include:spf.scannet.dk include:sendgrid.net -all |
| Policy | Record (3xd.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.scannet.dk include:sendgrid.net -all |
| Policy | Record (_dmarc.3xd.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email; |
| www CNAME | 3xd.dk (all on 3xd.dk) → 185.21.43.11 (AS48854) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u42695628.wl129.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u42695628.wl129.sendgrid.net | 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: 6/10 · 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 | 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 | Punktum dk A/S (direct) |
| Registered | 2016-01-06 |
| Expires | 2030-01-31 (1202d) |
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 |
|---|---|---|---|
| 2026-10-13 04:37:06 shown | 1883ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 12:39:53 | 712ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 11:26:03 | 859ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 17:06:35 | 1328ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 20:40:04 | 854ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 23:25:26 | 1170ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 17:23:54 | 1468ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 00:04:09 | 1082ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 12:53:10 | 3442ms | 4 NS 1 A 1 MX | 🔒 Secure |