sip01.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 October 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by sip01-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 600s | sip01-dk.mail.protection.outlook.com | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (sip01.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves sip01.dk: no address www.sip01.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101307 |
| 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 | 2010-10-04 |
| Expires | 2027-10-31 (378d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 13:06:08 shown | 968ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-13 12:29:31 | 916ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-25 03:06:39 | 15728ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 20:41:11 | 5166ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-16 02:49:48 | 6878ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-15 12:19:54 | 15470ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-14 00:46:03 | 14865ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-02 15:09:05 | 11330ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-26 03:11:26 | 10141ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 21:35:15 | 3214ms | 4 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 11:28:59 | 1191ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 14:35:50 | 4913ms | 4 NS 0 A 1 MX | 🔓 Insecure |