xdc.dk is a .dk domain served by 2 nameservers (cory.ns.cloudflare.com, reza.ns.cloudflare.com). It was registered on 3 June 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by xdc-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 |
|---|---|---|---|---|---|---|---|
| 104.26.12.20 | 300s | — | AS13335 | — | — | — | — |
| 104.26.13.20 | 300s | — | AS13335 | — | — | — | — |
| 172.67.75.137 | 300s | — | AS13335 | — | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.213.88 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:20::681a:c14 | 300s | — | AS13335 | — | — | — | — |
| 2606:4700:20::681a:d14 | 300s | — | AS13335 | — | — | — | — |
| 2606:4700:20::ac43:4b89 | 300s | — | AS13335 | — | — | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.26.12.20,104.26.13.20,172.67.75.137 ipv6hint=2606:4700:20::681a:c14,2606:4700:20::681a:d14,2606:4700:20::ac43:4b89 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| bhp5hd78z311xpqtb41dmrmjjnk3klxj |
| bw=zkSgxzx6Ep4mxHtDHmhoLo9s4AgGMXe5Pb4ardi0545D |
| google-site-verification=o76kcKjLp2bWnOBYRm9iPedmQNo4yff38KTgGHZUDeM |
| ms-domain-verification=57c045cf-aaed-4c40-80b8-b976d661c1b8 |
| ms-domain-verification=92b97ff3-bfc2-4957-9ece-dba29bb69f42 |
| v=spf1 ip4:62.70.4.47 ip4:91.189.202.180 ip4:91.189.202.178 include:spf.protection.outlook.com include:spf.mailjet.com include:spf.emailsignatures365.com include:spf.mandrillapp.com include:spf.curanet.dk -all |
| Policy | Record (xdc.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:62.70.4.47 ip4:91.189.202.180 ip4:91.189.202.178 include:spf.protection.outlook.com include:spf.mailjet.com include:spf.emailsignatures365.com include:spf.mandrillapp.com include:spf.curanet.dk -all |
| Policy | Record (_dmarc.xdc.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; rua=mailto:d3d154cb20a943bfa69a563746a1df03@dmarc-reports.cloudflare.net; aspf=s |
| www | 104.26.12.20 104.26.13.20 172.67.75.137 2606:4700:20::681a:c14 2606:4700:20::681a:d14 2606:4700:20::ac43:4b89 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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-xdc-dk._domainkey.xdcgruppenas.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 | 2407354386 |
| Primary NS (MNAME) | cory.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 | 2009-06-03 |
| Expires | 2027-06-30 (253d) |
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 |
|---|---|---|---|
| 2026-10-18 06:57:13 | 2318ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-10-03 09:20:48 | 2200ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-09-25 07:46:00 | 1088ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-09-24 07:26:18 | 1393ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-09-13 18:44:35 | 2507ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-09-11 05:10:02 | 1850ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-09-04 03:23:29 | 829ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-08-30 16:30:38 | 920ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-08-11 23:22:39 | 8495ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-08-08 02:52:10 | 2196ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-08-04 20:47:52 | 2098ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-07-28 13:09:16 | 2510ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-07-23 04:29:42 | 1734ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-07-18 16:42:07 | 3644ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-07-16 04:11:05 | 17567ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-07-13 05:05:41 | 1327ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-25 00:11:20 | 2016ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-20 06:32:32 shown | 2282ms | 2 NS 3 A 1 MX | 🔒 Secure |
| 2026-06-18 06:44:57 | 1082ms | 2 NS 3 A 1 MX | 🔒 Secure |