dahlstrom-byg.dk is a .dk domain served by 2 nameservers (desi.ns.cloudflare.com, jim.ns.cloudflare.com). It was registered on 10 May 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by dahlstrombyg-dk02c.mail.protection.outlook.com. 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| 🔶 Autoconfig | 93.191.156.239 |
| TXT Record |
|---|
| MS=ms98012918 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (dahlstrom-byg.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.dahlstrom-byg.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:766a925660f443b39bb14c6bf0538fa0@dmarc-reports.cloudflare.net |
| www | 104.21.34.8 172.67.194.173 2606:4700:3035::ac43:c2ad 2606:4700:3036::6815:2208 (AS13335) (address records, no CNAME) |
| www vs bare domain | Only www resolves dahlstrom-byg.dk: no address (all like this)www.dahlstrom-byg.dk: 104.21.34.8 172.67.194.173 2606:4700:3035::ac43:c2ad 2606:4700:3036::6815:2208 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-dahlstrombyg-dk02c._domainkey.dahlstroem.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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2412569577 |
| Primary NS (MNAME) | desi.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 | 2024-05-10 |
| Expires | 2027-05-09 (195d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 00:41:06 | 2035ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-05 23:20:30 | 1418ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 22:58:12 | 987ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-25 12:02:09 | 9708ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-18 10:04:17 | 1144ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-30 17:42:03 | 3025ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 23:55:31 | 1404ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-19 04:42:41 shown | 15819ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-26 02:44:24 | 2675ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 10:40:07 | 944ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-21 03:32:40 | 690ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 23:43:25 | 545ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 23:40:28 | 513ms | 2 NS 0 A 1 MX | 🔒 Secure |