op-tech.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.176 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by optech-dk0e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.176 | 3600s | webcluster49.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:8084:b0a8:c840:f9fe | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms44516434 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (op-tech.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 77.111.240.176 2a02:2350:5:102:8084:b0a8:c840:f9fe (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network op-tech.dk: 77.111.240.176 2a02:2350:5:102:8084:b0a8:c840:f9fe (AS51468) www.op-tech.dk: 77.111.240.176 2a02:2350:5:102:8084:b0a8:c840:f9fe (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · 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 | 2026092701 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 13:45:26 shown | 1533ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 19:08:46 | 1232ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 18:53:01 | 1153ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 14:55:51 | 1395ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 00:14:21 | 2037ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 23:37:20 | 8476ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-10 15:18:32 | 6816ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 00:48:20 | 3193ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-06 06:16:28 | 2418ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 01:06:48 | 831ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 13:09:18 | 2210ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 03:54:35 | 4204ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-24 19:25:46 | 3358ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 12:49:32 | 1172ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 02:10:20 | 796ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 16:38:37 | 11442ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:20:58 | 900ms | 2 NS 1 A 1 MX | 🔒 Secure |