sterion.dk is a .dk domain served by 4 nameservers (ns1-06.azure-dns.com, ns2-06.azure-dns.net, ns3-06.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.248.138.31 is hosted by Netnoerden ApS (AS216275) in Denmark. Mail is handled by mx.sterion.dk, mx-backup.sterion.dk and 1 more. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 80.248.138.31 | 3600s | — | AS216275 | Netnoerden ApS | 80.248.138.0/23 | 🇩🇰 Denmark | Søborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mx.sterion.dk | 80.248.138.32 | mx.sterion.dk | AS216275 Netnoerden ApS |
| 20 | 43200s | mx-backup.sterion.dk | 80.248.138.33 | mx-backup.sterion.dk | AS216275 Netnoerden ApS |
| 30 | 43200s | backup.sterion.dk | 109.59.181.186 | 109.59.181.186.mobile.3.dk | AS44034 Hi3G Access AB |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | sterion.dk → 80.248.138.31 |
| 🔶 Autoconfig | sterion.dk → 80.248.138.31 |
| TXT Record |
|---|
| v=spf1 a:mail.sterion.dk a:mx.sterion.dk a:mx-backup.sterion.dk mx -all |
| Policy | Record (sterion.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.sterion.dk a:mx.sterion.dk a:mx-backup.sterion.dk mx -all |
| Policy | Record (_dmarc.sterion.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:admin@sterion.dk; adkim=s; aspf=s; |
| www CNAME | sterion.dk (all on sterion.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 4/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sterion.dk | sterion.dk |
| 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) | ns1-06.azure-dns.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 1s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 20:52:05 shown | 5372ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-29 02:52:39 | 1617ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-23 02:57:33 | 2391ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 20:55:20 | 1009ms | 4 NS 1 A 3 MX | 🔓 Insecure |