tcb-it.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 October 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by tcbit-dk0i.mail.protection.outlook.com. 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.206.136 |
| TXT Record |
|---|
| MS=ms68804343 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (tcb-it.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026032401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-10-06 |
| Expires | 2026-10-31 (12d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 22:17:06 | 1390ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-08 14:48:53 | 2614ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 08:46:17 | 739ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-28 05:52:45 | 661ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-24 03:55:46 | 893ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-14 04:38:34 | 860ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-03 23:45:23 | 3263ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 01:05:40 | 1407ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 08:06:58 | 2638ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-26 09:02:41 | 904ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-24 10:45:19 | 1091ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 23:59:45 | 2734ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-21 12:01:30 | 1173ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 19:52:46 shown | 1116ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 14:21:31 | 1662ms | 2 NS 0 A 1 MX | 🔒 Secure |