arc01.dk is a .dk domain served by 3 nameservers (ns1.azehosting.net, ns2.azehosting.net, ns3.azehosting.net). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.4.208.59 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by arc01.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 46.4.208.59 | 3600s | pro02.azehosting.net | AS24940 | Hetzner Online GmbH | 46.4.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | arc01.dk | 2a01:4f8:2b03:11b0::2 46.4.208.59 |
pro02.azehosting.net pro02.azehosting.net |
AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:4f8:2b03:11b0::2 | 3600s | pro02.azehosting.net | AS24940 | Hetzner Online GmbH | 2a01:4f8:0:0:0:0:0:0/31 | 🇩🇪 Germany | Falkenstein |
| TXT Record |
|---|
| v=spf1 ip4:46.4.208.59 include:spf.azehosting.net ip4:168.119.150.59 +a +mx ~all |
| Policy | Record (arc01.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:46.4.208.59 include:spf.azehosting.net ip4:168.119.150.59 +a +mx ~all |
| www CNAME | arc01.dk (all on arc01.dk) |
| www vs bare domain | Same network arc01.dk: 46.4.208.59 2a01:4f8:2b03:11b0::2 (AS24940) www.arc01.dk: 46.4.208.59 2a01:4f8:2b03:11b0::2 (AS24940) |
| Wildcard | No |
| Denial of existence | NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 4/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.arc01.dk | X04tzVKTrGY094_30z7emxSkrBWYz0cbomIUMosIr5o |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026100201 |
| Primary NS (MNAME) | ns1.azehosting.net |
| Responsible (RNAME) | server-admin@azehosting.net |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 19:06:49 shown | 672ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 18:37:24 | 739ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 02:21:13 | 687ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 23:22:44 | 1184ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-29 22:33:50 | 812ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 06:12:46 | 4040ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 01:00:16 | 1170ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 12:58:29 | 1959ms | 3 NS 1 A 1 MX | 🔓 Insecure |