5100.dk is a .dk domain served by 4 nameservers (ns1-09.azure-dns.com, ns2-09.azure-dns.net, ns3-09.azure-dns.org and 1 more). It was registered on 1 December 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.54.56.67 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by mx.spamstopper.dk, popmail.spamstopper.dk. The zone is not DNSSEC-signed, has no 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 20.54.56.67 | 3600s | — | AS8075 | Microsoft Corporation | 20.48.0.0/12 | 🇮🇪 Ireland | Dublin |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.spamstopper.dk | 5.186.77.109 | 5.186.77.109.dhcp.fibianet.dk | AS44869 FIBIA P/S |
| 15 | 3600s | popmail.spamstopper.dk | 5.186.77.111 | 5.186.77.111.dhcp.fibianet.dk | AS44869 FIBIA P/S |
| TXT Record |
|---|
| v=spf1 a mx ip4:5.179.93.117 ip4:89.239.194.29 ~all |
| Policy | Record (5100.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ip4:5.179.93.117 ip4:89.239.194.29 ~all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u22435618.wl119.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u22435618.wl119.sendgrid.net | 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: 2/10 · 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 | 1 |
| Primary NS (MNAME) | ns1-09.azure-dns.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2007-12-01 |
| Expires | 2027-12-31 (438d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 01:10:00 shown | 495ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-25 04:40:39 | 554ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-01 16:26:44 | 754ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-16 12:50:22 | 1558ms | 4 NS 1 A 2 MX | 🔓 Insecure |