arendtsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 10 September 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.255.108.229 is hosted by The Infrastructure Group B.V. (AS60404) in The Netherlands. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.255.108.229 | — | — | AS60404 | The Infrastructure Group B.V. | 5.255.96.0/19 | 🇳🇱 The Netherlands | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a04:52c0:113:9847::1 | — | — | AS60404 | The Infrastructure Group B.V. | 2a04:52c0:0:0:0:0:0:0/32 | 🇳🇱 The Netherlands | Dronten |
| TXT Record |
|---|
| google-site-verification=NWLvV8StSutPfTezAqfUfK00ZVKjTZ5u2bGSxC7aIDo |
| keybase-site-verification=jCMDRhdBaONywLyyZjhtFXGu2_M_jq1Ek2FZ8Fx-dHQ |
| v=spf1 mx a:fw01.arendtsen.dk ip6:2001:67c:25b4::/48 include:aspmx.googlemail.com -all |
| Policy | Record (arendtsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a:fw01.arendtsen.dk ip6:2001:67c:25b4::/48 include:aspmx.googlemail.com -all |
| www CNAME | arendtsen.dk (all on arendtsen.dk) |
| www vs bare domain | Same network arendtsen.dk: 5.255.108.229 2a04:52c0:113:9847::1 (AS60404) www.arendtsen.dk: 5.255.108.229 2a04:52c0:113:9847::1 (AS60404) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
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 | 2026032702 |
| 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 | Punktum dk A/S (direct) |
| Registered | 1999-09-10 |
| Expires | 2027-09-30 (347d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 02:30:22 | 737ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-10-09 13:37:31 | 3273ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-10-05 07:23:32 | 1135ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-26 05:51:24 | 2669ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-23 22:06:19 | 2354ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-19 00:17:52 | 2456ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-09-11 22:03:50 | 1296ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-08-28 02:01:33 | 1169ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-06-25 08:11:38 | 3796ms | 2 NS 1 A 7 MX | 🔒 Secure |
| 2026-06-22 13:37:41 | 1171ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 13:39:15 shown | 841ms | 2 NS 1 A 7 MX | 🔒 Secure |