byg-det.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 7 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.20.205.36 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.20.205.36 | 3600s | linux364.unoeuro.com | AS48854 | team.blue Denmark A/S | 185.20.204.0/22 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.20.205.36 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (byg-det.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.byg-det.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025042300 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2020-09-07 |
| Expires | 2026-09-30 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-24 09:33:13 | 161ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-23 05:38:12 | 321ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-22 01:25:02 | 133ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-20 18:29:50 | 93ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-19 08:40:11 | 221ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-18 07:47:49 | 231ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-17 07:24:23 | 232ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-16 06:16:24 | 241ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-15 05:53:15 | 250ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-14 03:46:56 | 215ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-13 02:36:31 | 323ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-11 23:35:38 | 221ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-10 21:57:24 | 112ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-09 18:12:18 | 109ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-08 17:09:12 | 272ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-07 17:01:58 | 705ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-23 13:04:22 | 3068ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-09-11 22:51:13 | 1394ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-06-28 01:54:34 | 653ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 19:35:08 shown | 1638ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 20:47:50 | 437ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 07:51:34 | 1163ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 18:11:01 | 572ms | 4 NS 1 A 1 MX | 🔒 Secure |