arenholtbruun.dk is a .dk domain served by 2 nameservers (joselyn.ns.cloudflare.com, lynn.ns.cloudflare.com). It was registered on 18 February 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by arenholtbruun-dk.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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.83.153 |
| TXT Record |
|---|
| MS=ms40642869 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (arenholtbruun.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.83.153 172.67.177.219 2606:4700:3030::6815:5399 2606:4700:3034::ac43:b1db (AS13335) (address records, no CNAME) |
| www vs bare domain | Different networks arenholtbruun.dk: 168.119.144.139 (AS24940) (all like this)www.arenholtbruun.dk: 104.21.83.153 172.67.177.219 2606:4700:3030::6815:5399 2606:4700:3034::ac43:b1db (AS13335) |
| Wildcard | No |
DNS lookups: 1/10 · 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2411080484 |
| Primary NS (MNAME) | joselyn.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2007-02-18 |
| Expires | 2030-08-31 (1404d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:37:20 | 1509ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 12:04:51 | 1320ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 09:42:59 | 2957ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 09:25:19 | 1128ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-16 04:57:30 | 1464ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-14 02:28:57 | 1155ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-03 21:14:50 | 625ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-30 07:49:22 | 1674ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 14:13:11 | 1263ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-25 11:03:54 | 1090ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-11 00:24:59 | 9380ms | 2 NS 0 A 1 MX | ❓ Unknown |
| 2026-08-09 15:44:30 shown | 2326ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-04 22:56:49 | 1345ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-02 09:51:52 | 1929ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 19:25:18 | 1875ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-16 12:51:38 | 978ms | 2 NS 0 A 1 MX | 🔓 Insecure |