mtag.dk is a .dk domain served by 2 nameservers (dimitris.ns.cloudflare.com, ursula.ns.cloudflare.com). It was registered on 20 February 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.22.180 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mtag-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.22.180 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.206.94 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.97.105.200 |
| 🔶 Autoconfig | 172.67.206.94 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::6815:16b4 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:ce5e | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.22.180,172.67.206.94 ech=AEX+DQBB/QAgACAXB3WSVMJCEvoNZQHmoN9vn+IfvWP22NyOkRp/+YwJXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:16b4,2606:4700:3035::ac43:ce5e |
| TXT Record |
|---|
| MS=ms26495964 |
| v=spf1 ip4:195.242.131.64 include:spf.protection.outlook.com ~all |
| Policy | Record (mtag.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:195.242.131.64 include:spf.protection.outlook.com ~all |
| www | 104.21.22.180 172.67.206.94 2606:4700:3031::ac43:ce5e 2606:4700:3036::6815:16b4 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-mtag-dk._domainkey.mtagisoleringdk.w-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-mtag-dk._domainkey.mtagisoleringdk.w-v1.dkim.mail.microsoft | 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 | 2404858543 |
| Primary NS (MNAME) | dimitris.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 | 2009-02-20 |
| Expires | 2027-02-28 (131d) |
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).
| Domain | Registrar |
|---|---|
| misolering.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 15:58:03 | 1094ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 05:34:58 | 955ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-13 04:25:16 | 1221ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-17 00:29:49 | 2179ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-16 00:10:18 | 2086ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-19 16:34:26 | 999ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 21:28:35 shown | 1121ms | 2 NS 2 A 1 MX | 🔓 Insecure |