grysling.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 August 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.twelveletter.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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail.twelveletter.com | 149.210.169.89 2a01:7c8:aaac:328::1 |
sigstop.twelveletter.com sigstop.twelveletter.com |
AS20857 Signet B.V. AS20857 Signet B.V. |
| TXT Record |
|---|
| v=spf1 a:mail.twelveletter.com -all |
| Policy | Record (grysling.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.twelveletter.com -all |
| Policy | Record (_dmarc.grysling.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:qb8tp6zs@ag.dmarcian.com; |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101101 |
| 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 | 2003-08-15 |
| Expires | 2027-08-31 (318d) |
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).
| Domain | Registrar |
|---|---|
| arkolog.dk | ONE.COM A/S |
| bodilfrederiksen.dk | ONE.COM A/S |
| sictransit.dk | ONE.COM A/S |
| veilbaek.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 03:43:08 shown | 1067ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-26 16:12:33 | 783ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-11 01:04:59 | 3272ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 15:12:31 | 821ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-12 03:37:49 | 1126ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-17 19:50:09 | 862ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-14 15:12:16 | 1480ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 00:47:07 | 609ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 09:46:49 | 912ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 09:18:05 | 1227ms | 2 NS 0 A 1 MX | 🔒 Secure |