effektiv-isolering.dk is a .dk domain served by 2 nameservers (clark.ns.cloudflare.com, isla.ns.cloudflare.com). It was registered on 15 April 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.43.171 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.effektiv-isolering.dk. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.43.171 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.182.138 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.effektiv-isolering.dk | 104.21.43.171 172.67.182.138 2606:4700:3033::6815:2bab 2606:4700:3037::ac43:b68a |
— — — — |
AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.43.171 |
| 🔶 Autoconfig | 104.21.43.171 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:2bab | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:b68a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.43.171,172.67.182.138 ech=AEX+DQBB/wAgACAj8q7MWDQP7Ivd04Bdiof5uGPJmpXhw51KpzejfcSnVgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:2bab,2606:4700:3037::ac43:b68a |
| www | 104.21.43.171 172.67.182.138 2606:4700:3033::6815:2bab 2606:4700:3037::ac43:b68a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network effektiv-isolering.dk: 104.21.43.171 172.67.182.138 2606:4700:3033::6815:2bab 2606:4700:3037::ac43:b68a (AS13335) www.effektiv-isolering.dk: 104.21.43.171 172.67.182.138 2606:4700:3033::6815:2bab 2606:4700:3037::ac43:b68a (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| 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 | 2415750549 |
| Primary NS (MNAME) | clark.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 | 2011-04-15 |
| Expires | 2027-04-30 (194d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 05:58:05 shown | 559ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 20:47:59 | 798ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-15 04:28:58 | 1845ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-28 09:54:13 | 13840ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-16 03:40:58 | 1124ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 19:17:27 | 2204ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 04:35:27 | 685ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 06:09:28 | 406ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 06:03:54 | 17445ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 06:02:30 | 1573ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 06:00:58 | 456ms | 2 NS 2 A 1 MX | 🔓 Insecure |