cozmosystems.dk is a .dk domain served by 2 nameservers (earl.ns.cloudflare.com, elsa.ns.cloudflare.com). It was registered on 1 September 2026 (WHOIS) and first appeared in the .dk zone on 2 September 2026. Its website address 104.21.37.230 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cozmosystems-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.37.230 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.214.173 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3036::ac43:d6ad | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:25e6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.37.230,172.67.214.173 ech=AEX+DQBBXAAgACA/od5J/6eikSy4ob//FpKSIg1JEIG0nMVyRrh8/5FUQgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3036::ac43:d6ad,2606:4700:3037::6815:25e6 |
| TXT Record |
|---|
| google-site-verification=OPggitdK5KrbaceWD5oQpPHuKUX87l9cSaudDqTzLGs |
| MS=ms92560645 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (cozmosystems.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.cozmosystems.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; sp=none; rua=mailto:admin@cozmosystems.dk; |
| www | 104.21.37.230 172.67.214.173 2606:4700:3036::ac43:d6ad 2606:4700:3037::6815:25e6 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network cozmosystems.dk: 104.21.37.230 172.67.214.173 2606:4700:3036::ac43:d6ad 2606:4700:3037::6815:25e6 (AS13335) www.cozmosystems.dk: 104.21.37.230 172.67.214.173 2606:4700:3036::ac43:d6ad 2606:4700:3037::6815:25e6 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-cozmosystems-dk._domainkey.cozmosystems.d-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-cozmosystems-dk._domainkey.cozmosystems.d-v1.dkim.mail.microsoft | 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417978917 |
| Primary NS (MNAME) | earl.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-09-01 |
| Expires | 2027-08-31 (310d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 21:13:38 | 2906ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-22 15:07:15 shown | 608ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-21 00:24:34 | 1398ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-02 14:47:29 | 3323ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-30 14:40:33 | 1203ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-26 15:24:59 | 1073ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-24 14:52:56 | 1710ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-23 21:05:34 | 1163ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-14 22:00:02 | 1659ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-07 20:17:05 | 714ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-02 08:56:38 | 470ms | 3 NS 0 A 0 MX | 🔒 Secure |