sfkro.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 5 May 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.46.3.99 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by sfkro-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 78.46.3.99 | — | dedi899.your-server.de | AS24940 | Hetzner Online GmbH | 78.46.0.0/15 | 🇩🇪 Germany | Nuremberg |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:4f8:d0a:329c::2 | — | dedi899.your-server.de | AS24940 | Hetzner Online GmbH | 2a01:4f8:0:0:0:0:0:0/31 | 🇩🇪 Germany | — |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com include:mailgun.org ~all |
| Policy | Record (sfkro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:mailgun.org ~all |
| www | 78.46.3.99 2a01:4f8:d0a:329c::2 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network sfkro.dk: 78.46.3.99 2a01:4f8:d0a:329c::2 (AS24940) www.sfkro.dk: 78.46.3.99 2a01:4f8:d0a:329c::2 (AS24940) |
| Wildcard | Yes: any name under the zone resolves |
| 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 |
|---|---|---|
| s1 | — | 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: 6/10 · 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 | 2023061501 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2007-05-05 |
| Expires | 2027-05-31 (224d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 18:31:45 | 836ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 11:57:17 | 1211ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 11:33:56 | 689ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 09:14:18 | 8199ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 07:34:11 | 1531ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 12:20:56 shown | 1547ms | 2 NS 1 A 1 MX | 🔒 Secure |