optilink.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 24 November 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.158 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com. The zone is DNSSEC-signed but currently fails validation, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 93.191.156.158 | 3600s | linux270.unoeuro.com | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| 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 |
|---|---|
| 🔷 Autodiscover | 93.191.156.158 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| Policy | Record (_dmarc.optilink.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network optilink.dk: 104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335) www.optilink.dk: 104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'optilink.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2025070607 |
| 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 | 2018-11-24 |
| Expires | 2026-11-30 (42d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 05:53:15 | 768ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-04 05:39:07 | 542ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-04 02:47:49 | 715ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-02 02:37:41 | 777ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 02:35:01 | 665ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 15:49:47 | 789ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 05:13:24 | 1852ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 03:10:31 | 1726ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-05 02:56:37 | 1236ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-28 06:01:35 | 9661ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 12:55:14 | 1664ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 12:43:05 | 10052ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-08 20:22:07 | 1950ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-02 12:55:53 | 10559ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 15:54:17 | 831ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 08:39:38 | 1172ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 01:38:26 shown | 595ms | 4 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-18 02:25:28 | 844ms | 4 NS 1 A 1 MX | 🔒 Secure |