byggefirmaer.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 19 October 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 157.173.120.224 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by byggefirmaer.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 157.173.120.224 | 360s | vmi2967233.contaboserver.net | AS51167 | Contabo GmbH | 157.173.96.0/19 | 🇫🇷 France | Lauterbourg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 14400s | byggefirmaer.dk | 157.173.120.224 | vmi2967233.contaboserver.net | AS51167 Contabo GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 193.200.90.178 |
| 🔶 Autoconfig | 193.200.90.178 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 ip4:193.200.90.178 include:_spf.e-studio.dk -all |
| Policy | Record (byggefirmaer.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:193.200.90.178 include:_spf.e-studio.dk -all |
| Policy | Record (_dmarc.byggefirmaer.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 157.173.120.224 (AS51167) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.byggefirmaer.dk | XAQEHOT3LkmPfQVMSxQ6ENWKw5LvhYMBr63xo9FP3Aw |
| 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 | 2026082901 |
| Primary NS (MNAME) | ns1.e-studio.dk |
| Responsible (RNAME) | hostmaster@mailrelay.e-studio.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | GITC aps |
| Registered | 2021-10-19 |
| Expires | 2027-10-18 (362d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 20:51:53 shown | 467ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 11:52:05 | 1782ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-31 08:55:39 | 752ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 01:08:35 | 577ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-30 05:12:28 | 1282ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 18:10:52 | 436ms | 3 NS 1 A 1 MX | 🔓 Insecure |