sinesig.dk is a .dk domain served by 2 nameservers (henry.ns.cloudflare.com, olga.ns.cloudflare.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 104.21.7.223 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.vextr.net. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.7.223 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.156.126 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.vextr.net | 169.58.230.87 | mail.vextr.net | AS51167 Contabo GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.vextr.net → 169.58.230.87 |
| 🔶 Autoconfig | mail.vextr.net → 169.58.230.87 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:7df | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3031::ac43:9c7e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.7.223,172.67.156.126 ech=AEX+DQBBSQAgACAUQi3BYSAiekgxKcjXNFAcDMMOWv9CH0PGkNUysALRSgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:7df,2606:4700:3031::ac43:9c7e |
| TXT Record |
|---|
| v=spf1 mx a:mail.vextr.net ~all |
| Policy | Record (sinesig.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx a:mail.vextr.net ~all |
| Policy | Record (_dmarc.sinesig.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:postmaster@vextr.net |
| www | 104.21.7.223 172.67.156.126 2606:4700:3030::6815:7df 2606:4700:3031::ac43:9c7e (AS13335) (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: 2/10 · 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 | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2418075809 |
| Primary NS (MNAME) | henry.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-03-04 |
| Expires | 2031-04-30 (1649d) |
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 |
|---|---|---|---|
| 2026-10-21 22:55:07 shown | 427ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 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 | 3959ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:18:44 | 562ms | 2 NS 1 A 1 MX | 🔒 Secure |