mailsender.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 22 June 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 52.236.60.130 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by post3.montes.dk, post4.montes.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 52.236.60.130 | 3600s | — | AS8075 | Microsoft Corporation | 52.224.0.0/11 | 🇮🇪 Ireland | Dublin |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | post3.montes.dk | 62.243.38.142 | post3.montes.dk | AS3292 TDC Holding A/S |
| 10 | 3600s | post4.montes.dk | 62.116.194.45 | post4.montes.dk | AS31027 GlobalConnect A/S |
| TXT Record |
|---|
| google-site-verification=aQ-RW194ps5dV-ZV9UpMtmKtf1jmhz0lXMrXYmu5UwI |
| MS=ms80236929 |
| v=spf1 a mx include:spf.diaphoni.net include:u8497618.wl119.sendgrid.net include:spf.montes.dk -all |
| Policy | Record (mailsender.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:spf.diaphoni.net include:u8497618.wl119.sendgrid.net include:spf.montes.dk -all |
| Policy | Record (_dmarc.mailsender.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:2eg772052k@rua.powerdmarc.com; ruf=mailto:2eg772052k@ruf.powerdmarc.com; fo=1; |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| 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 |
|---|---|---|
| s1 | s1.domainkey.u8497618.wl119.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u8497618.wl119.sendgrid.net | RSA · ~1024 bit below 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: 5/10 · 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 | 2024051400 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2001-06-22 |
| Expires | 2027-07-31 (286d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 05:05:38 | 2877ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 17:31:53 | 422ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-25 16:27:33 | 567ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-31 12:38:28 | 607ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 06:53:34 | 786ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 19:10:27 shown | 732ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 13:47:25 | 1781ms | 4 NS 1 A 2 MX | 🔒 Secure |