onlinestudies.dk is a .dk domain served by 2 nameservers (dana.ns.cloudflare.com, jay.ns.cloudflare.com). It was registered on 14 October 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.54.111 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mfwd.ebrandservices.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.54.111 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.138.54 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mfwd.ebrandservices.com | 80.92.65.53 | mfwd.ebrandservices.com | AS24611 Datacenter Luxembourg S.A. |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:366f | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:8a36 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.54.111,172.67.138.54 ech=AEX+DQBBbAAgACCMsxwRBgGrXNUdFFKfQJFyN/UEtcaydl45F49w+jphVAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:366f,2606:4700:3037::ac43:8a36 |
| www | 104.21.54.111 172.67.138.54 2606:4700:3031::6815:366f 2606:4700:3037::ac43:8a36 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network onlinestudies.dk: 104.21.54.111 172.67.138.54 2606:4700:3031::6815:366f 2606:4700:3037::ac43:8a36 (AS13335) www.onlinestudies.dk: 104.21.54.111 172.67.138.54 2606:4700:3031::6815:366f 2606:4700:3037::ac43:8a36 (AS13335) |
| Wildcard | No |
| 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 | 2417376319 |
| Primary NS (MNAME) | dana.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 2016-10-14 |
| Expires | 2026-10-31 (12d) |
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 |
|---|---|---|---|
| 2026-10-13 23:44:23 shown | 1052ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-02 09:13:44 | 1548ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 07:31:21 | 2457ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 14:11:55 | 2576ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 04:31:10 | 942ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-15 14:34:23 | 3636ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 19:14:17 | 1043ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 10:19:07 | 929ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 13:02:51 | 1048ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 02:51:47 | 1235ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 23:15:09 | 1142ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:00:52 | 1376ms | 2 NS 2 A 1 MX | 🔓 Insecure |