grundsyn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.176 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.176 | 3600s | webcluster49.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:8080:1b14:52cc:dd27 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 77.111.240.176 2a02:2350:5:102:8080:1b14:52cc:dd27 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network grundsyn.dk: 77.111.240.176 2a02:2350:5:102:8080:1b14:52cc:dd27 (AS51468) www.grundsyn.dk: 77.111.240.176 2a02:2350:5:102:8080:1b14:52cc:dd27 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101404 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 03:49:12 shown | 545ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-14 02:29:09 | 1737ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 08:49:16 | 571ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-07 02:07:13 | 1815ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-16 05:21:39 | 3330ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 09:13:08 | 704ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 10:48:24 | 719ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 10:43:23 | 2691ms | 2 NS 1 A 4 MX | 🔒 Secure |