sinesig.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 March 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.7.131.54 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mail.sinesig.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | 195.206.121.10 | ns01.one.com | AS197495 One.com A/S |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 81.7.131.54 | 43199s | mail.vextr.net | AS47292 | Sentia Denmark A/S | 81.7.128.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail.sinesig.com | 81.7.131.54 | mail.vextr.net | AS47292 Sentia Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | sinesig.com → 81.7.131.54 |
| 🔶 Autoconfig | sinesig.com → 81.7.131.54 |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (sinesig.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| www | 169.58.230.87 (AS51167) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sinesig.dk | sinesig.com |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| 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 | 2016-03-04 |
| Expires | 2031-04-30 (1654d) |
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 |
|---|---|---|---|
| 2026-10-09 11:11:04 | 417ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 10:53:12 | 508ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 18:31:30 | 796ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-18 23:48:46 | 1072ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-11 21:22:28 | 1388ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 11:32:35 | 1303ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 04:18:49 | 1495ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 01:27:23 | 1016ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 01:24:36 shown | 3959ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:18:44 | 562ms | 2 NS 1 A 1 MX | 🔒 Secure |