frberg-hf.dk is a .dk domain served by 2 nameservers (celeste.ns.cloudflare.com, rustam.ns.cloudflare.com). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.22.226 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 3 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.22.226 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.207.140 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:16e2 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:cf8c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.22.226,172.67.207.140 ech=AEX+DQBBmwAgACCTfdjtzc2K30kFCI/hlvy6WnikcveksPTBjaxNvfjFJgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:16e2,2606:4700:3033::ac43:cf8c |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 10 | 443 | mail.itcfyn.dk |
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| 9td7g52u1lm5usqinfpkc987km |
| cpzThveiGpGZxZ7EG6mkeXoau2drmUtYCLFSysMKy8b9HDOzYoVXEi8VP++Bkh0OvGw31oYwyWkX9iCqesKHkA== |
| f1nfov7oaf7r8u51an9oodtpg8 |
| iqgnsl2mu0j8r9mm1k1nl6t42v |
| TkEDlIKuOpY6MGu3vX8KdasiegD3wTBrwpgR2ybjdKne4i47jA1A0r+15LbUGhUnAGB4/+R1N1n8WzoFZBKiZg== |
| v=spf1 ip4:87.48.163.29 a:itcpostfix02out.itcfyn.dk a:frberg-hf.dk include:spf.protection.outlook.com include:spf.zitcom.dk include:spf.simply.com include:spf.mailanyone.net -all |
| vpe=d051aa29 |
| Policy | Record (frberg-hf.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:87.48.163.29 a:itcpostfix02out.itcfyn.dk a:frberg-hf.dk include:spf.protection.outlook.com include:spf.zitcom.dk include:spf.simply.com include:spf.mailanyone.net -all |
| Policy | Record (_dmarc.frberg-hf.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email,mailto:dmarc@itcfyn.dk; |
| www | 104.21.22.226 172.67.207.140 2606:4700:3031::6815:16e2 2606:4700:3033::ac43:cf8c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network frberg-hf.dk: 104.21.22.226 172.67.207.140 2606:4700:3031::6815:16e2 2606:4700:3033::ac43:cf8c (AS13335) www.frberg-hf.dk: 104.21.22.226 172.67.207.140 2606:4700:3031::6815:16e2 2606:4700:3033::ac43:cf8c (AS13335) |
| 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 |
|---|---|---|
| selector2 | selector2-frberghf-dk01e._domainkey.o365itcfyn.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: 8/10 · policy: -all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417633852 |
| Primary NS (MNAME) | celeste.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 | 1998-02-16 |
| Expires | 2027-03-31 (158d) |
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 |
|---|---|---|---|
| 2026-10-17 09:02:56 shown | 1579ms | 2 NS 2 A 5 MX | 🔒 Secure |
| 2026-10-16 08:51:22 | 1490ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-10-15 08:49:45 | 1331ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-10-14 07:32:28 | 1536ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-10-07 15:34:34 | 2055ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-10-04 19:59:03 | 3031ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-10-01 19:52:28 | 783ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-23 17:34:16 | 1875ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-03 02:10:51 | 1497ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-25 01:39:32 | 1237ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-20 02:49:37 | 951ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-17 09:20:25 | 2142ms | 2 NS 1 A 5 MX | 🔒 Secure |