webduo.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.10.221.79 is hosted by Fiberby ApS (AS42541) in Denmark. Mail is handled by 185-10-221-79.ip4.fiberby.net, webduo.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.10.221.79 | 14400s | 185-10-221-79.ip4.fiberby.net | AS42541 | Fiberby ApS | 185.10.220.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 14400s | 185-10-221-79.ip4.fiberby.net | 185.10.221.79 | 185-10-221-79.ip4.fiberby.net | AS42541 Fiberby ApS |
| 20 | 14400s | webduo.dk | 185.10.221.79 | 185-10-221-79.ip4.fiberby.net | AS42541 Fiberby ApS |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (webduo.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.webduo.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-reports@webduo.dk |
| www CNAME | webduo.dk (all on webduo.dk) → 185.10.221.79 (AS42541) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101101 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 00:16:18 shown | 843ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-12 18:19:29 | 867ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-24 23:51:46 | 710ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-11 15:14:42 | 3720ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-17 20:04:59 | 938ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-12 06:40:42 | 1169ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 08:23:51 | 821ms | 2 NS 1 A 2 MX | 🔒 Secure |