optact.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 23 January 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.158.133.1 is hosted by Cloudflare, Inc. (AS13335) in United Arab Emirates. Mail is handled by mx.simply.com. 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 |
|---|---|---|---|---|---|---|---|
| 185.158.133.1 | 300s | lovable-app-cd-1-4.p.l5e.io | AS13335 | Cloudflare, Inc. | 185.158.133.0/24 | 🇦🇪 United Arab Emirates | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (optact.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.optact.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 185.158.133.1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-01-23 |
| Expires | 2027-01-22 (88d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 13:13:10 shown | 735ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 03:33:45 | 374ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 03:26:07 | 532ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 20:48:16 | 499ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-22 05:57:49 | 498ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-08 23:55:58 | 483ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 04:29:57 | 827ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 13:39:11 | 610ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 05:42:23 | 13744ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 04:34:32 | 723ms | 3 NS 1 A 1 MX | 🔓 Insecure |