fedtfirma.dk is a .dk domain served by 2 nameservers (addilyn.ns.cloudflare.com, corey.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 103.168.172.37 is hosted by Fastmail Pty Ltd (AS151847) in United States. Mail is handled by mx1.simplelogin.co, mx2.simplelogin.co. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| addilyn.ns.cloudflare.com | — | — | — |
| corey.ns.cloudflare.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 103.168.172.37 | — | www.messagingengine.com | AS151847 | Fastmail Pty Ltd | 103.168.172.0/24 | 🇺🇸 United States | Philadelphia |
| 103.168.172.52 | — | www.messagingengine.com | AS151847 | Fastmail Pty Ltd | 103.168.172.0/24 | 🇺🇸 United States | Philadelphia |
| TXT Record |
|---|
| sl-verification=rrnfyqweijhfwigxqlbbwibubadyhk |
| v=spf1 include:simplelogin.co ~all |
| Policy | Record (fedtfirma.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:simplelogin.co ~all |
| Policy | Record (_dmarc.fedtfirma.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; adkim=s; aspf=s |
| www CNAME | web.messagingengine.com (all on messagingengine.com) |
| www vs bare domain | Same network fedtfirma.dk: 103.168.172.37 103.168.172.52 (AS151847) www.fedtfirma.dk: 103.168.172.37 103.168.172.52 (AS151847) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| dkim | dkim._domainkey.simplelogin.co | RSA · ~1024 bit below 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| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.simplelogin.co | DANE-TA · SPKI · SHA-256 | E5545E211347241891C554A03934CDE9… |
| SMTP _25._tcp.mx1.simplelogin.co | DANE-EE · SPKI · SHA-256 | 6B56DC55058100C47BEF4BB8020D2A24… |
| SMTP _25._tcp.mx1.simplelogin.co | DANE-TA · SPKI · SHA-256 | 8D02536C887482BC34FF54E41D2BA659… |
| SMTP _25._tcp.mx2.simplelogin.co | DANE-TA · SPKI · SHA-256 | E5545E211347241891C554A03934CDE9… |
| SMTP _25._tcp.mx2.simplelogin.co | DANE-EE · SPKI · SHA-256 | 6B56DC55058100C47BEF4BB8020D2A24… |
| SMTP _25._tcp.mx2.simplelogin.co | DANE-TA · SPKI · SHA-256 | 8D02536C887482BC34FF54E41D2BA659… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2407051119 |
| Primary NS (MNAME) | addilyn.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 08:01:15 | 1817ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-29 20:39:37 | 774ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-27 19:24:31 | 1718ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-10 22:50:46 | 2807ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-09-04 07:32:11 | 734ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-27 19:03:03 | 1758ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-26 18:42:40 | 1165ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-25 02:13:39 | 17705ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-22 23:38:11 | 3515ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-15 11:47:02 | 4420ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-08-10 13:11:48 | 1689ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-07-18 06:06:23 | 1984ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-24 18:24:03 | 1618ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-19 09:31:43 | 1450ms | 2 NS 2 A 2 MX | 🔒 Secure |
| 2026-06-17 09:34:51 shown | 859ms | 2 NS 2 A 2 MX | 🔒 Secure |