heyday.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 2 March 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.40.46.107 is hosted by Itm8 A/S (AS62319) in Denmark. Mail is handled by heyday-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 185.40.46.107 | 1182s | — | AS62319 | Itm8 A/S | 185.40.44.0/22 | 🇩🇰 Denmark | Viby J |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| TXT Record |
|---|
| anthropic-domain-verification-jvz5a3=uBJpQ0qHJ5yWSCQfhFTZaAYUP |
| apple-domain-verification=erPcM5xF7kcO9MoZ |
| atlassian-domain-verification=ESdYoW23BiF5JllPQ7mnHOTgzJagRMCz51dUQK54nQOQjirs/Mgxh8rD8fXW99e8 |
| google-site-verification=zBugHEadV6Pbg_wknTWnbFWi28Uto--cx7hNBIFiXak |
| MS=ms17176788 |
| openai-domain-verification=dv-ZvVzIxD8M6DlpM0i5OdaRmhc |
| v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:servers.mcsv.net include:emsd1.com ~all |
| Policy | Record (heyday.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:servers.mcsv.net include:emsd1.com ~all |
| Policy | Record (_dmarc.heyday.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@heyday.dk |
| www | 185.40.46.107 (AS62319) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-heyday-dk._domainkey.heyday365.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-heyday-dk._domainkey.heyday365.onmicrosoft.com | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| 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 | 2004-03-02 |
| Expires | 2027-03-31 (164d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 02:35:16 shown | 1423ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 21:24:21 | 1155ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 11:01:05 | 3046ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 10:48:25 | 1283ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 05:38:35 | 2343ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 12:53:15 | 877ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 02:20:17 | 828ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-21 06:07:13 | 9277ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 19:34:50 | 1820ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 14:26:18 | 1193ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 11:09:27 | 1349ms | 4 NS 1 A 1 MX | 🔒 Secure |