z7.dk is a .dk domain served by 2 nameservers (beth.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 18 March 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 209.250.245.213 is hosted by The Constant Company, LLC (AS20473) in The Netherlands. Mail is handled by mx1.z7.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 209.250.245.213 | — | mail-constant.z7.dk | AS20473 | The Constant Company, LLC | 209.250.224.0/19 | 🇳🇱 The Netherlands | Amsterdam |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | — | mx1.z7.dk | 2001:19f0:5001:251e:5400:3ff:fecb:bbdf 209.250.245.213 |
mail-constant.z7.dk mail-constant.z7.dk |
AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2001:19f0:5001:251e:5400:3ff:fecb:bbdf | — | mail-constant.z7.dk | AS20473 | The Constant Company, LLC | 2001:19f0:5000:0:0:0:0:0/38 | 🇳🇱 The Netherlands | Amsterdam |
| TXT Record |
|---|
| google-site-verification=4ACupq6Fz6ODgGL_UaGIXiWBSnhcptZAq6_3idlA8Cs |
| v=spf1 mx -all |
| Policy | Record (z7.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.z7.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@z7.dk; ruf=mailto:dmarc@z7.dk; |
| www CNAME | z7.dk (all on z7.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.z7.dk | DANE-EE · SPKI · SHA-256 | F9A185C80C938FA378F128BF5490470E… |
| SMTP _25._tcp.mx1.z7.dk | DANE-EE · SPKI · SHA-512 | 2276806096A697117B9565ED4FE6F459… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2407069649 |
| Primary NS (MNAME) | beth.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-03-18 |
| Expires | 2035-03-31 (3084d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 08:00:50 | 2559ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 17:00:30 | 779ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 16:51:26 | 1346ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 06:28:36 | 852ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 06:08:48 | 882ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-15 14:41:51 | 2747ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 12:15:05 | 3090ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-29 20:52:18 | 1555ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 10:24:42 | 2717ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 05:55:56 | 6571ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 14:39:39 | 10004ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 10:52:33 | 8957ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-10 12:04:11 | 3168ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-06 20:48:36 | 25244ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 16:43:01 | 964ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 13:31:48 shown | 3036ms | 2 NS 1 A 1 MX | 🔒 Secure |