tankmar.dk is a .dk domain served by 2 nameservers (donald.ns.cloudflare.com, lisa.ns.cloudflare.com). It was registered on 31 March 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.95.247 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by tankmar-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.95.247 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.149.221 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| 🔶 Autoconfig | 104.21.95.247 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:5ff7 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:95dd | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.95.247,172.67.149.221 ech=AEX+DQBBtAAgACDyAfp5CVJ+gySGY7o4XKPpYUjnt+svxrskk/MT5BIxHwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:5ff7,2606:4700:3036::ac43:95dd |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (tankmar.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.tankmar.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:3548c9709a064e6cbc729ea50bdfe450@dmarc-reports.cloudflare.net |
| www | 104.21.95.247 172.67.149.221 2606:4700:3030::6815:5ff7 2606:4700:3036::ac43:95dd (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| BIMI | v=BIMI1; l=https://tankmar.dk/wp-content/uploads/2026/08/tankmar-monogram-bimi.svg |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-tankmar-dk._domainkey.sappro.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-tankmar-dk._domainkey.sappro.onmicrosoft.com | 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 | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416336725 |
| Primary NS (MNAME) | donald.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2004-03-31 |
| Expires | 2032-03-31 (1990d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 12:02:45 shown | 1628ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 11:13:58 | 856ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 11:04:40 | 966ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-08 09:45:41 | 900ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 14:16:43 | 4768ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-14 18:34:36 | 7544ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-06 20:39:01 | 2198ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-25 23:55:26 | 2406ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-22 21:14:35 | 11190ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-28 02:26:57 | 1434ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-17 15:07:51 | 1330ms | 2 NS 2 A 1 MX | ❓ Unknown |