dfd-int.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.45 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.45 | 3600s | linux28.curanet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 3600s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| TXT Record |
|---|
| v=spf1 include:spf.onlinemail.io -all |
| Policy | Record (dfd-int.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.onlinemail.io -all |
| www | 93.191.158.42 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
DNS lookups: 3/10 · 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 | 2026092101 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 17:49:10 | 307ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-03 02:12:34 | 391ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 02:00:25 | 717ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 01:38:34 | 538ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-25 00:25:39 shown | 544ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-23 00:12:55 | 611ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-18 17:50:02 | 1801ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-26 19:06:32 | 886ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-04 21:03:24 | 651ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 06:16:11 | 461ms | 2 NS 1 A 2 MX | ⚠️ Bogus |
| 2026-06-17 02:36:03 | 2490ms | 2 NS 1 A 2 MX | 🔒 Secure |