mt-construction.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 25 June 2026 (WHOIS) and first appeared in the .dk zone on 26 June 2026. Its website address 104.21.45.34 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.45.34 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.208.93 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 3600s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:2d22 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:d05d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.45.34,172.67.208.93 ech=AEX+DQBBtgAgACBenBMBvdPYl6eLQ/f1OnqHc8hiH+sm2r54ji36DSYBAgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:2d22,2606:4700:3035::ac43:d05d |
| TXT Record |
|---|
| v=spf1 a include:spf.curanet.dk ~all |
| Policy | Record (mt-construction.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a include:spf.curanet.dk ~all |
| www | 104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network mt-construction.dk: 104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335) www.mt-construction.dk: 104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335) |
| Wildcard | No |
DNS lookups: 4/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.mt-construction.dk | 1G9xsRGq_2nSyK_EWq_OVKflPX5yQmk5E_AUUoejMIE |
| TXT | _acme-challenge.mt-construction.dk | AXttQaYXHDg5_QWtwrnE7nbRTwCQWsHj2z9hPTu7DhU |
| 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 | 2413008541 |
| Primary NS (MNAME) | barbara.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2026-06-25 |
| Expires | 2027-06-24 (248d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 18:29:31 | 2042ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-26 16:54:55 | 593ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-26 09:33:41 | 709ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-25 12:53:52 | 614ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-24 12:52:21 shown | 1392ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-27 14:48:33 | 2383ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-27 10:04:30 | 1995ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-26 08:33:13 | 791ms | 2 NS 2 A 2 MX | 🔓 Insecure |