backup-idag.dk is a .dk domain served by 2 nameservers (alberto.ns.cloudflare.com, chelsea.ns.cloudflare.com). It was registered on 11 April 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.42.240 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.42.240 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.213.107 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:d56b | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:2af0 | 600s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.42.240,172.67.213.107 ech=AEX+DQBBlAAgACDX+49OxQrVL+I22MVcTS1ZKEqGBb+rY52oKOXV03b0bQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:d56b,2606:4700:3035::6815:2af0 |
| www | 104.21.42.240 172.67.213.107 2606:4700:3033::6815:2af0 2606:4700:3033::ac43:d56b (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network backup-idag.dk: 104.21.42.240 172.67.213.107 2606:4700:3033::6815:2af0 2606:4700:3033::ac43:d56b (AS13335) www.backup-idag.dk: 104.21.42.240 172.67.213.107 2606:4700:3033::6815:2af0 2606:4700:3033::ac43:d56b (AS13335) |
| Wildcard | No |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| 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 | 2405406988 |
| Primary NS (MNAME) | alberto.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 | 2011-04-11 |
| Expires | 2027-04-30 (195d) |
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).
Showing 100 of 232.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-23 20:28:24 | 844ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-22 08:10:04 | 2935ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 08:05:57 | 7127ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-27 02:30:44 | 1883ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 12:51:33 | 1435ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 01:26:57 | 1169ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 19:54:01 shown | 783ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 14:00:10 | 750ms | 2 NS 2 A 1 MX | 🔓 Insecure |