ntp-byg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 September 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by ntpbyg-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 → 40.104.116.56 |
| 🔶 Autoconfig | autodiscover.outlook.com → 40.104.116.8 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms54233198 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (ntp-byg.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www CNAME | autodiscover.outlook.com (all on outlook.com) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.ntp-byg.dk | autodiscover.outlook.com |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026080701 |
| 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 | 2016-09-16 |
| Expires | 2026-09-30 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 13:56:28 | 103ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-01 13:55:32 | 1722ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-30 13:45:54 | 729ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-06 18:24:11 | 1891ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 17:54:17 | 1219ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-21 09:33:25 | 5446ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-09 11:37:54 shown | 5135ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-14 08:21:02 | 9489ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-27 17:31:58 | 936ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 04:34:49 | 1098ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 22:47:10 | 1419ms | 2 NS 0 A 1 MX | 🔒 Secure |