oz1bdu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 January 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 83.151.155.18 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by mail.semark.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 |
|---|---|---|---|---|---|---|---|
| 83.151.155.18 | 3600s | — | AS31027 | GlobalConnect A/S | 83.151.128.0/18 | 🇩🇰 Denmark | Frederiksberg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.semark.dk | 83.151.155.21 | mail.semark.dk | AS31027 GlobalConnect A/S |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (oz1bdu.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.oz1bdu.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; aspf=r; adkim=r; fo=1; pct=100; rua=mailto:semark-d@dmarc.report-uri.com; ruf=mailto:semark-d@dmarc.report-uri.com; |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:info@semarkit.net |
| 0 | issue | letsencrypt.org |
| www CNAME | oz1bdu.dk (all on oz1bdu.dk) → 83.151.155.18 (AS31027) |
| 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 | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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: 0/10 · 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 | 2026101401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | WEBHOSTING A/S |
| Registered | 2019-01-03 |
| Expires | 2027-01-31 (106d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 19:20:15 shown | 977ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 14:34:29 | 4437ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 21:43:17 | 981ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 13:25:19 | 676ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 06:45:27 | 691ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 12:57:37 | 2838ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-19 09:17:39 | 1265ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 12:30:44 | 806ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 13:16:16 | 2734ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 05:05:50 | 1502ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 14:16:53 | 1178ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 06:25:28 | 1898ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 14:18:26 | 1442ms | 2 NS 1 A 1 MX | 🔒 Secure |