mailoption.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 27 January 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.88.185.62 is hosted by TDC Holding A/S (AS3292) in Denmark. 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 |
|---|---|---|---|---|---|---|---|
| 193.88.185.62 | 1800s | — | AS3292 | TDC Holding A/S | 193.88.0.0/15 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (mailoption.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www | 193.88.185.62 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 2026011643 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 2000-01-27 |
| Expires | 2027-03-31 (164d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 21:24:25 | 492ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-12 17:14:27 | 494ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-09 10:34:51 | 532ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-03 04:23:04 | 2503ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 22:27:59 | 1756ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-24 21:49:19 | 649ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 21:15:26 | 1127ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-16 16:31:23 shown | 611ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-06 10:13:39 | 1909ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-19 18:59:20 | 2677ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-18 18:57:37 | 2864ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-17 09:02:22 | 3324ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-05 21:59:14 | 1242ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-15 17:32:54 | 745ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-27 09:42:35 | 683ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 11:36:57 | 526ms | 4 NS 1 A 0 MX | 🔒 Secure |