arj-technology.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 7 April 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.68.177 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.68.177 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.197.137 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 10 | 3600s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:44b1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:c589 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.68.177,172.67.197.137 ech=AEX+DQBBMgAgACAyKj91O2q6RdL0qFlcWTlYaj3BJo8nhoftP0Z2uI4/YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:44b1,2606:4700:3033::ac43:c589 |
| TXT Record |
|---|
| v=spf1 a include:spf.curanet.dk include:spf.simply.com -all |
| Policy | Record (arj-technology.dk) |
|---|---|
| -all (hard fail) | v=spf1 a include:spf.curanet.dk include:spf.simply.com -all |
| www | 104.21.68.177 172.67.197.137 2606:4700:3030::6815:44b1 2606:4700:3033::ac43:c589 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network arj-technology.dk: 104.21.68.177 172.67.197.137 2606:4700:3030::6815:44b1 2606:4700:3033::ac43:c589 (AS13335) www.arj-technology.dk: 104.21.68.177 172.67.197.137 2606:4700:3030::6815:44b1 2606:4700:3033::ac43:c589 (AS13335) |
| Wildcard | No |
DNS lookups: 5/10 · 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 | 2413272869 |
| Primary NS (MNAME) | barbara.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 | 2017-04-07 |
| Expires | 2027-04-30 (184d) |
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).
| Domain | Registrar |
|---|---|
| arjtech.dk | DNS Platform ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-26 13:45:17 | 460ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-30 14:28:43 | 815ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-29 03:24:17 | 1135ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-28 00:03:17 shown | 1020ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-02 00:36:39 | 861ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-16 12:55:56 | 1476ms | 2 NS 2 A 2 MX | 🔓 Insecure |