26april2017.dk is a .dk domain served by 2 nameservers (a.portsdns.se, b.portsdns.net). It was registered on 7 July 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by 26april2017-dk.mail.protection.outlook.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| a.portsdns.se | 2607:f740:e009::1 45.54.35.101 |
— — |
AS63911 NetActuate, Inc AS63911 NetActuate, Inc |
| b.portsdns.net | 2a00:11c0:3d::1 94.16.23.1 |
— — |
AS42354 Anexia Cloud Solutions GmbH AS42354 Anexia Cloud Solutions GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (26april2017.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.26april2017.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:6532697110892@dmarc.centerasecurity.com; |
| www | Exists, no address |
| www vs bare domain | Neither resolves 26april2017.dk: no address www.26april2017.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-26april2017-dk._domainkey.heartcorp.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-26april2017-dk._domainkey.heartcorp.onmicrosoft.com | RSA · ~1024 bit below 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2024082100 |
| Primary NS (MNAME) | a.portsdns.se |
| Responsible (RNAME) | registry@ports.net |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 28800s |
| Field | Value |
|---|---|
| Registrar | Abion AB |
| Registered | 2017-07-07 |
| Expires | 2027-07-31 (281d) |
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 |
|---|---|---|---|
| 2026-08-27 23:02:21 | 933ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 18:25:33 | 1019ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-02 10:07:41 | 1312ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-24 19:42:50 shown | 4854ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-24 08:10:38 | 861ms | 2 NS 0 A 1 MX | ❓ Unknown |
| 2026-06-16 12:37:53 | 807ms | 2 NS 0 A 1 MX | 🔓 Insecure |