guide2know.dk is a .dk domain served by 4 nameservers (ns1-08.azure-dns.com, ns2-08.azure-dns.net, ns3-08.azure-dns.org and 1 more). It was registered on 14 December 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by guide2know-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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=2YQjmwKNFFiIRKhNlSoULu21MSbPdOnqNDi2-oVsQu |
| _globalsign-domain-verification=b2rfMjyUZdlm6t34jiv7w8wFQiJ-SAFINerfy6RwgL |
| dCeNZ5869TKw3fC+E5M3CY0r7H6EbgFQpzsX0ULKEW8= |
| google-site-verification=-tZHU--aUIW9EOdBkXmdNPgQHXmeHKcHbbiGvCy_MOQ |
| google-site-verification=ss9w28Pvxs8MIHci6ghHJamxDMQcKjlBhyXWYzUG1Ko |
| lm7g6kb5r526x9r63fr2shv4b56fg2tv |
| MS=ms18459439 |
| v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.hostnordic.com include:spf.topdesk.net -all |
| Policy | Record (guide2know.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.hostnordic.com include:spf.topdesk.net -all |
| Policy | Record (_dmarc.guide2know.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:62de94a87c3dc@dmarc.centerasecurity.com; |
| www | Exists, no address |
| www vs bare domain | Neither resolves guide2know.dk: no address www.guide2know.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.guide2know.dk | 5pri6bcvz0y8i589qk.fastly-validations.com |
| TXT | 5pri6bcvz0y8i589qk.fastly-validations.com | OihEHMu3Bj_xN27bBvYRb0WoISiffReQxyC4gtGwsCc |
| TXT | 5pri6bcvz0y8i589qk.fastly-validations.com | QtOtnJHEFJz_Vek5Xt-Xh5NAOHF7j5FnlbyOCfcHhcI |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 3 |
| Primary NS (MNAME) | ns1-08.azure-dns.com |
| Responsible (RNAME) | hostmaster@gyldendal.dk |
| Refresh | 3600s |
| Retry | 600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | WEB SOLUTIONS A/S |
| Registered | 2007-12-14 |
| Expires | 2026-12-31 (72d) |
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 |
|---|---|---|---|
| 2026-09-30 21:52:43 shown | 933ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 00:03:48 | 686ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 15:20:39 | 1655ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-25 19:00:10 | 793ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-19 15:26:40 | 858ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 10:06:29 | 927ms | 4 NS 0 A 1 MX | 🔒 Secure |