fagerholm.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 1 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.249.12 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 212.237.249.12 | 3600s | lb1.builder.nu | AS48854 | team.blue Denmark A/S | 212.237.248.0/23 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| protonmail-verification=1084bc1f5e9de55a9b7ff4abc9ef2825b6a853d3 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (fagerholm.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.fagerholm.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves fagerholm.dk: no address www.fagerholm.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-fagerholm-dk._domainkey.u1cqua2.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-fagerholm-dk._domainkey.u1cqua2.onmicrosoft.com | 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| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026020203 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-11-01 |
| Expires | 2026-11-30 (41d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 11:08:06 | 1061ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-07 22:55:13 | 458ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-07 00:25:35 | 1580ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-26 17:14:08 | 529ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-15 20:04:39 | 836ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-04 07:04:05 | 639ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-01 09:59:43 shown | 713ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 16:58:54 | 627ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 09:11:31 | 1639ms | 2 NS 1 A 2 MX | 🔒 Secure |