nordsys.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 5 July 2026 (WHOIS) and first appeared in the .dk zone on 6 July 2026. Mail is handled by mail.tutanota.de. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mail.tutanota.de | 185.205.69.211 185.205.69.213 185.205.69.214 |
mail.w11.tutanota.de mail.w13.tutanota.de mail.w14.tutanota.de |
AS210909 Tutao GmbH AS210909 Tutao GmbH AS210909 Tutao GmbH |
| TXT Record |
|---|
| t-verify=61a5d839a6333ab692b37b8297978f95 |
| v=spf1 include:spf.tutanota.de -all |
| Policy | Record (nordsys.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.tutanota.de -all |
| Policy | Record (_dmarc.nordsys.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; adkim=s |
| Check | Result |
|---|---|
| Status | 🔒 Enforce |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | enforce |
| Policy ID | 20190723 |
| max_age | 86400s |
| Policy MX | mail.tutanota.de |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves nordsys.dk: no address www.nordsys.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.tutanota.de | RSA · ~2048 bit |
| s2 | s2.domainkey.tutanota.de | 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: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.tutanota.de | DANE-EE · Full cert · SHA-256 | D141F8F3A4AAC2E4D2677AAFCC723D8E… |
| SMTP _25._tcp.mail.tutanota.de | DANE-EE · SPKI · SHA-256 | 5AE0D6DC8A713441003F578C5A1D4D70… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026091201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2026-07-05 |
| Expires | 2027-07-04 (252d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 05:14:49 | 771ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-15 04:58:13 | 1072ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 16:39:09 shown | 534ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-18 00:47:26 | 798ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-09 16:02:55 | 697ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-21 11:39:16 | 5079ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-14 03:52:41 | 2624ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-14 11:13:45 | 8821ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-10 01:37:55 | 855ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-08 16:05:24 | 848ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-06 08:40:21 | 2548ms | 1 NS 0 A 0 MX | ❓ Unknown |