cac.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.19.191.28 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cac-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.19.191.28 | 600s | — | AS13335 | Cloudflare, Inc. | 104.16.0.0/14 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 10 | 443 | mx.onlineautodele.dk |
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=-bxr7ZZdwqgGpvYtu4NhJURmsv02--_2B-o5V0y5LO |
| _globalsign-domain-verification=6vBvDVWralnFY-a0NpJlWVXKU69QKb7jc01_o3M9ZM |
| _globalsign-domain-verification=LcP2wGkUnebHBUKQrDotDwAtWD59Xv8B9d4hPnrcoK |
| _globalsign-domain-verification=WqgUM4lVH7P9rfPb0-ubvpsTeJtakQob8EsrTjdPd1 |
| 37884a14-53d7-409e-977c-4176479458fc |
| apple-domain-verification=rseYn66XNQ9VSGqz |
| mgverify=28d4ed4dd94b620fdd64ed7268659a45d3d8234759d9da0f69abb1428cfcd109 |
| N6AisL2McWnE0Xs0lGsjMzFNr0uXFLYWvKEm4fxaLE6bPWe12tir54biblwdCSqm2GX2hD/W09fTRTd6o4+/rg== |
| v=spf1 include:spf.cac.dk include:spf.protection.outlook.com ~all |
| Policy | Record (cac.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.cac.dk include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.cac.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc_rua@cac.dk; ruf=mailto:dmarc_ruf@cac.dk; pct=100 |
| www | 104.19.191.28 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u3116537.wl038.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u3116537.wl038.sendgrid.net | RSA · ~2048 bit |
| selector1 | selector1-cac-dk._domainkey.cacdk.onmicrosoft.com | RSA · ~1024 bit below 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: 7/10 · 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 | 2026101201 |
| 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 | 1997-02-12 |
| Expires | 2027-07-31 (285d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 22:50:07 shown | 1997ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 01:11:13 | 1186ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:42:15 | 1088ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 03:01:53 | 1421ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 02:22:01 | 5336ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-10 21:12:29 | 5688ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 11:30:59 | 2568ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 18:45:57 | 648ms | 2 NS 1 A 1 MX | 🔒 Secure |