blueday.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 6 December 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.109.7 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 94.231.109.7 | 3600s | nt4.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 94.231.109.7 |
| 🔶 Autoconfig | 94.231.109.7 |
| www | Address record (no CNAME) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026093000 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2005-12-06 |
| Expires | 2026-12-31 (75d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 06:13:35 shown | 1981ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 06:01:28 | 413ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 00:59:28 | 565ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 06:48:50 | 614ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 22:21:46 | 734ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:08:05 | 1526ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:07:08 | 524ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:02:06 | 3032ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:01:04 | 603ms | 4 NS 1 A 1 MX | 🔒 Secure |