rantzau-bech.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 October 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. On 19 October 2026 we saw it transfer from ONE.COM A/S to Simply.com A/S. Its website address 94.231.103.58 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by rantzaubech-dk01i.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 94.231.103.58 | 600s | linux153.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| 🔶 Autoconfig | 94.231.103.58 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms71483802 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (rantzau-bech.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 94.231.103.58 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
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 | fully validated |
| Field | Value |
|---|---|
| Serial | 2026071303 |
| 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 | Simply.com A/S |
| Registered | 2005-10-02 |
| Expires | 2027-10-31 (376d) |
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 |
|---|---|---|---|
| 2026-10-19 07:45:08 | 2180ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 01:06:25 | 1357ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 22:40:25 | 1146ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 21:30:33 | 1099ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 10:30:33 | 5320ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 23:28:53 | 898ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-11 08:43:06 | 1028ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 08:25:18 | 1699ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-16 12:23:57 | 10123ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-14 02:30:01 shown | 16956ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 04:24:24 | 914ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 23:20:13 | 1184ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 06:07:30 | 972ms | 2 NS 1 A 1 MX | 🔒 Secure |