sigtuna.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.46 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by sigtuna-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.46 | 3600s | vm1440.enterprisecloud.nu | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| TXT Record |
|---|
| MS=ms97594015 |
| v=spf1 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all |
| Policy | Record (sigtuna.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all |
| Policy | Record (_dmarc.sigtuna.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; |
| www | 185.21.40.46 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-sigtuna-dk._domainkey.sigtunadk.e-v1.dkim.mail.microsoft | 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: 5/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026042901 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 14:32:52 shown | 2045ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 13:52:47 | 1247ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 10:04:16 | 1334ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 16:32:25 | 788ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 19:53:56 | 2688ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 18:42:43 | 1180ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 14:02:39 | 2983ms | 2 NS 1 A 1 MX | 🔒 Secure |