frederikmadsen.dk is a .dk domain served by 2 nameservers (ns.semaphor.dk, ns2.semaphor.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by frederikmadsen-dk.mx1.comendosystems.com, frederikmadsen-dk.mx2.comendosystems.net. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.semaphor.dk | 195.190.25.50 | ns.semaphor.dk | AS201697 Semaphor |
| ns2.semaphor.dk | 85.235.240.108 | ns2.semaphor.dk | AS3308 Norlys Telco A/S |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 38400s | frederikmadsen-dk.mx1.comendosystems.com | 192.162.219.255 2a01:77c0:1619:4102:a81b:80d0:e56c:edc0 |
mx41.electric.net gw2-1535.security.comendo.com |
AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. |
| 20 | 38400s | frederikmadsen-dk.mx2.comendosystems.net | 192.162.219.155 | mx41.electric.net | AS16509 Amazon.com, Inc. |
| TXT Record |
|---|
| v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (frederikmadsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (_dmarc.frederikmadsen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves frederikmadsen.dk: no address www.frederikmadsen.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.frederikmadsen.dk | frederikmadsen.dk.acme.semaphor.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025082700 |
| Primary NS (MNAME) | ns.semaphor.dk |
| Responsible (RNAME) | hostmaster@semaphor.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 38400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:00:10 shown | 1025ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-29 21:23:41 | 883ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-29 15:18:00 | 2160ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-20 05:46:04 | 820ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-17 09:44:31 | 2895ms | 2 NS 0 A 2 MX | 🔓 Insecure |