alfaholding.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 7 February 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by alfaholding-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 → 52.98.154.152 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| anthropic-domain-verification-y3rxx0=H5QCF98MVZLfKHFD7mg6Kdm7a |
| MS=ms10293622 |
| v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all |
| Policy | Record (alfaholding.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all |
| Policy | Record (_dmarc.alfaholding.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:martin@alfaholding.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves alfaholding.dk: no address www.alfaholding.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-alfaholding-dk._domainkey.alfaholdingaps.y-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-alfaholding-dk._domainkey.alfaholdingaps.y-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: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101602 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2023-02-07 |
| Expires | 2027-02-06 (109d) |
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).
| Domain | Registrar |
|---|---|
| alfainnovation.dk | Simply.com A/S |
| irongiant.dk | Simply.com A/S |
| vildtbase.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 09:51:08 shown | 905ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-13 02:04:11 | 1218ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-07 19:38:29 | 973ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-02 21:02:40 | 1391ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 18:27:30 | 773ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-27 04:59:59 | 887ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 10:20:22 | 2854ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-21 22:53:09 | 1404ms | 3 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 12:46:39 | 774ms | 3 NS 0 A 1 MX | 🔒 Secure |