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 199.36.158.100 is hosted by Fastly, Inc. (AS54113) in United States. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 199.36.158.100 | 3600s | — | AS54113 | Fastly, Inc. | 199.36.158.0/24 | 🇺🇸 United States | — |
| 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 | 199.36.158.100 |
| 🔶 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 |
| TXT Record |
|---|
| hosting-site=optilink-hjemmeside |
| 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 |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.optilink.dk | 6mXFpuWwD73jy0Q6x_kLykpa7YlDbjk2lYHPaNz2Ty4 |
| 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 | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062206 |
| 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 shown | 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 | 595ms | 4 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-18 02:25:28 | 844ms | 4 NS 1 A 1 MX | 🔒 Secure |