onlineteori.dk is a .dk domain served by 2 nameservers (jessica.ns.cloudflare.com, quinton.ns.cloudflare.com). It was registered on 31 January 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.114.96.1 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by spam.micusto.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 188.114.96.1 | — | — | AS13335 | Cloudflare, Inc. | 188.114.96.0/22 | — | — |
| 188.114.97.1 | — | — | AS13335 | Cloudflare, Inc. | 188.114.96.0/22 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | spam.micusto.com | 94.237.28.65 | spam.micusto.com | AS202053 UpCloud Ltd |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a06:98c1:3120::1 | — | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3120:0:0:0:0:0/46 | — | — |
| 2a06:98c1:3121::1 | — | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3120:0:0:0:0:0/46 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBNAAgACDAjIMLMdyoyKrz46qSONFPzN+RU0NXjPG5OscOQ8iLfgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1 |
| TXT Record |
|---|
| brevo-code:69f6d0a7976a51d0ce312f96975b3466 |
| google-gws-recovery-domain-verification=56979507 |
| google-site-verification=FmmbHtDnQE8PR21R7r7OnBIB8rHa6EsTOUwu4XPGTD0 |
| v=spf1 mx include:_spf.dcmediahosting.com include:spf.mailjet.com ~all |
| Policy | Record (onlineteori.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx include:_spf.dcmediahosting.com include:spf.mailjet.com ~all |
| Policy | Record (_dmarc.onlineteori.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.com |
| www | 104.21.85.103 172.67.204.116 2606:4700:3032::6815:5567 2606:4700:3034::ac43:cc74 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network onlineteori.dk: 104.21.85.103 172.67.204.116 2606:4700:3032::6815:5567 2606:4700:3034::ac43:cc74 (AS13335) www.onlineteori.dk: 104.21.85.103 172.67.204.116 2606:4700:3032::6815:5567 2606:4700:3034::ac43:cc74 (AS13335) |
| Wildcard | No |
DNS lookups: 4/10 · 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 | 2406654803 |
| Primary NS (MNAME) | jessica.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 | 2009-01-31 |
| Expires | 2027-01-31 (96d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:00:58 | 1137ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 07:59:38 | 543ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 03:56:27 | 1946ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 03:54:54 | 10154ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 23:22:27 | 9491ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-23 22:55:10 | 1021ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-07-23 15:11:50 | 1508ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-20 00:06:35 | 25741ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:23:00 shown | 2383ms | 2 NS 2 A 1 MX | 🔓 Insecure |