fiberby.dk is a .dk domain served by 4 nameservers (authns1.fiberby.net, authns2.fiberby.net, authns3.fiberby.net and 1 more). It was registered on 5 April 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.147 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fiberby-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 94.231.103.147 | 300s | linux134.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a03:5440:1010::80:1 | 300s | — | AS42541 | Fiberby ApS | 2a03:5440:0:0:0:0:0:0/29 | 🇩🇰 Denmark | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=bLmQknK6CGokTCy8cjvUh4REmsBCqTdV2LT-tOiBdPg |
| MS=ms67573993 |
| v=spf1 include:spf.protection.outlook.com include:spf.fiberby.net ip4:40.68.36.243 -all |
| Policy | Record (fiberby.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.fiberby.net ip4:40.68.36.243 -all |
| Policy | Record (_dmarc.fiberby.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@fiberby.net; ruf=mailto:dmarc@fiberby.net; aspf=s; adkim=s; fo=1 |
| www CNAME | fiberby.dk (all on fiberby.dk) |
| www vs bare domain | Same network fiberby.dk: 94.231.103.147 2a03:5440:1010::80:1 (AS42541 AS48854) www.fiberby.dk: 94.231.103.147 2a03:5440:1010::80:1 (AS42541 AS48854) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-fiberby-dk._domainkey.fiberby.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: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.fiberby.dk | fiberby.dk.acme.fiberby.net |
| 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 | 2026073000 |
| Primary NS (MNAME) | authns1.fiberby.net |
| Responsible (RNAME) | hostmaster@fiberby.net |
| Refresh | 43200s |
| Retry | 1800s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-04-05 |
| Expires | 2027-04-30 (193d) |
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 |
|---|---|
| fiberbypost.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 15:28:33 shown | 2377ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 20:14:06 | 1982ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-02 23:16:10 | 1802ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-30 00:29:56 | 1052ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 17:56:27 | 2877ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 18:12:20 | 3648ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 06:08:38 | 1420ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 17:35:18 | 2212ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 06:10:53 | 2777ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 10:07:56 | 2800ms | 4 NS 1 A 1 MX | 🔓 Insecure |