zsi.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 March 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, has no 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | www.zsi.dk → 88.159.129.124 |
| 🔶 Autoconfig | www.zsi.dk → 88.159.129.124 |
| TXT Record |
|---|
| MS=ms14905070 |
| v=spf1 include:spf.mandrillapp.com ?all |
| Policy | Record (zsi.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.mandrillapp.com ?all |
| www CNAME | zsi.noip.me (all on noip.me) → 88.159.129.124 (AS1136) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ?all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.zsi.dk | www.zsi.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026090701 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2001-03-08 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:13:09 | 1638ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-09-30 01:51:04 | 775ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-09-26 15:04:59 | 4814ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-09-09 10:49:41 shown | 1031ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-08-24 23:50:56 | 886ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-08-12 00:40:38 | 1179ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-07-10 23:16:56 | 2727ms | 2 NS 0 A 4 MX | 🔒 Secure |
| 2026-06-17 13:40:28 | 2138ms | 2 NS 0 A 4 MX | 🔒 Secure |