busch.dk is a .dk domain served by 2 nameservers (ns1.onwelcom.dk, ns2.onwelcom.dk). It was registered on 23 April 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.105.216.45 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by busch-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.onwelcom.dk | 185.51.79.241 | ns1.onwelcom.dk | AS205984 Powernet Aps |
| ns2.onwelcom.dk | 185.51.79.251 | — | AS205984 Powernet Aps |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 20.105.216.45 | 86400s | — | AS8075 | Microsoft Corporation | 20.64.0.0/10 | 🇳🇱 The Netherlands | Amsterdam |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscoveronprem.buschvacuum.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| _globalsign-domain-verification=QOVpHHdlDcF5lIAmexryd-4s1t-DBpVQsnNTFcJkP1 |
| adobe-idp-site-verification=37db254027e9e2a9c83f1558a81d4ddc825ea81b1ef9b35f55b865561e99611f |
| atlassian-domain-verification=4kBT8asavyXPFxiicJaHFiaSYxzd3h4jxVi/THoaOmPZmFVD4dt54Vq9T5WkD7oj |
| knowbe4-site-verification=d6ea8cac47ee9e81290b15199111ba6e |
| MS=ms53352925 |
| v=spf1 include:spf.protection.outlook.com include:_spf.cmail.ondemand.com include:_spf-dc57.sapsf.eu -all |
| Policy | Record (busch.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:_spf.cmail.ondemand.com include:_spf-dc57.sapsf.eu -all |
| Policy | Record (_dmarc.busch.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:dmarc@buschgroup.com; sp=none; aspf=r |
| www CNAME | cdn.buschvacuum.com (all on buschvacuum.com) |
| www vs bare domain | Different networks busch.dk: 138.199.245.109 138.199.245.111 (AS24940) (all like this)www.busch.dk: 88.218.3.190 2a0d:5600:1a:26::2 (AS9009) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-busch-dk._domainkey.buschvacuum.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-busch-dk._domainkey.buschvacuum.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: 4/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.busch.dk | busch.dk.acme.smoxy.eu |
| 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 | 2021072267 |
| Primary NS (MNAME) | ns1.onwelcom.dk |
| Responsible (RNAME) | hostmaster@busch.dk |
| Refresh | 3600s |
| Retry | 600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1997-04-23 |
| Expires | 2027-06-30 (254d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 05:35:48 | 5997ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 02:59:17 shown | 2290ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 11:20:07 | 1328ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-06 09:12:29 | 4309ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-01 23:36:58 | 785ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 17:46:02 | 968ms | 2 NS 1 A 1 MX | 🔓 Insecure |