f01.dk is a .dk domain served by 5 nameservers (ns1.linode.com, ns2.linode.com, ns3.linode.com and 2 more). It was registered on 8 November 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 139.144.73.109 is hosted by Akamai Connected Cloud (AS63949) in Germany. Mail is handled by mx.f01.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 139.144.73.109 | 21600s | mx.f01.dk | AS63949 | Akamai Connected Cloud | 139.144.64.0/20 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 86400s | mx.f01.dk | 139.144.73.109 2a01:7e01::f03c:93ff:fe17:44b0 |
mx.f01.dk — |
AS63949 Akamai Connected Cloud AS63949 Akamai Connected Cloud |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:7e01::f03c:93ff:fe17:44b0 | 21600s | — | AS63949 | Akamai Connected Cloud | 2a01:7e00:0:0:0:0:0:0/30 | 🇩🇪 Germany | Frankfurt am Main |
| TXT Record |
|---|
| google-site-verification=6kSEsidr46syoBukhTsQbDt-QUVKbCMJW1DvPvO1178 |
| v=spf1 a mx a:mx.f01.dk -all |
| Policy | Record (f01.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx a:mx.f01.dk -all |
| Policy | Record (_dmarc.f01.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:webmaster@folkmann.it; ruf=mailto:webmaster@folkmann.it; |
| www | Exists, no address |
| www vs bare domain | Neither resolves f01.dk: no address www.f01.dk: no address |
| 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 |
|---|---|---|
| dkim | — | RSA Invalid key data — receivers can't verify signatures |
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: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2021000012 |
| Primary NS (MNAME) | ns1.linode.com |
| Responsible (RNAME) | theme1256@gmail.com |
| Refresh | 14400s |
| Retry | 14400s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Domænehajen ApS |
| Registered | 2021-11-08 |
| Expires | 2026-11-07 (21d) |
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 |
|---|---|
| datababs.dk | Domænehajen ApS |
| f00.dk | Domænehajen ApS |
| f02.dk | Domænehajen ApS |
| interbabs.dk | Domænehajen ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 12:59:17 | 1156ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-14 09:00:30 | 2307ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-13 08:26:38 | 592ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-07 04:18:32 | 1571ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 02:35:44 | 17373ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 22:19:53 | 4642ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 20:56:57 shown | 1231ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 09:10:43 | 1658ms | 5 NS 1 A 1 MX | 🔓 Insecure |