estur.dk is a .dk domain served by 2 nameservers (maciej.ns.cloudflare.com, mckenzie.ns.cloudflare.com). It was registered on 22 September 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.17.250 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.estur.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.17.250 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.178.234 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.estur.dk | 62.171.190.255 | mixx2.leartes.net | AS51167 Contabo GmbH |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:11fa | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:b2ea | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.17.250,172.67.178.234 ech=AEX+DQBBFAAgACDGQenGDs0xPPX1275oaReGJkusc0cRrB+n3gRmiTS6SwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:11fa,2606:4700:3036::ac43:b2ea |
| TXT Record |
|---|
| v=spf1 a:mixx2.leartes.net ip4:62.171.190.255 -all |
| Policy | Record (estur.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mixx2.leartes.net ip4:62.171.190.255 -all |
| Policy | Record (_dmarc.estur.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=s; aspf=s |
| www | 104.21.17.250 172.67.178.234 2606:4700:3033::6815:11fa 2606:4700:3036::ac43:b2ea (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417052672 |
| Primary NS (MNAME) | maciej.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2025-09-22 |
| Expires | 2027-09-21 (338d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 08:23:20 shown | 3580ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:01:10 | 3623ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 05:16:52 | 847ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 03:39:13 | 2463ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 22:59:33 | 709ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-29 21:36:51 | 1379ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 15:53:33 | 1194ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 13:36:25 | 1016ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-23 06:32:12 | 7378ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-31 13:15:57 | 1678ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 06:38:39 | 897ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 02:30:41 | 1186ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 18:33:33 | 787ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 08:26:34 | 2452ms | 2 NS 2 A 1 MX | 🔓 Insecure |