john-olsen-holding.dk is a .dk domain served by 2 nameservers (ns1.telecomx.dk, ns2.telecomx.dk). It was registered on 3 October 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.198.52.210 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by johnolsenholding-dk01be.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.telecomx.dk | 62.192.160.190 | ns1.telecomx.dk | AS205984 Powernet Aps |
| ns2.telecomx.dk | 62.192.160.191 | ns2.telecomx.dk | AS205984 Powernet Aps |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 80.198.52.210 | 86400s | cpe.ge-0-1-7-100.bynqe12.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 80.196.0.0/14 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.8 |
| TXT Record |
|---|
| MS=ms51592484 |
| v=spf1 a:mail.powernetmail.dk include:spf.protection.outlook.com -all |
| Policy | Record (john-olsen-holding.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.powernetmail.dk include:spf.protection.outlook.com -all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
DNS lookups: 2/10 · policy: -all
No problems found| 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 | 17 |
| Primary NS (MNAME) | ns1.telecomx.dk |
| Responsible (RNAME) | hostmaster@telecomx.dk |
| Refresh | 3600s |
| Retry | 600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2000-10-03 |
| Expires | 2026-12-31 (71d) |
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 |
|---|---|---|---|
| 2026-09-30 19:53:30 | 945ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 13:24:53 | 967ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 07:56:40 shown | 1233ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 00:23:10 | 2937ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 13:32:43 | 760ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 03:56:13 | 936ms | 2 NS 1 A 1 MX | 🔓 Insecure |