arc-group.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 December 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.30 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by arcgroup-dk0i.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.30 | — | webcluster1.webpod12-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10a:f7:cf03:2ca3:2e53 | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| MS=ms27116270 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (arc-group.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.arc-group.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:it@arc-group.dk; ruf=mailto:it@arc-group.dk; pct=100; fo=1; |
| www | 46.30.213.30 2a02:2350:5:10a:f7:cf03:2ca3:2e53 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network arc-group.dk: 46.30.213.30 2a02:2350:5:10a:f7:cf03:2ca3:2e53 (AS51468) www.arc-group.dk: 46.30.213.30 2a02:2350:5:10a:f7:cf03:2ca3:2e53 (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-arcgroup-dk0i._domainkey.arcgroupdk.d-v1.dkim.mail.microsoft | 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052001 |
| 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 | 2021-12-02 |
| Expires | 2026-12-01 (44d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 15:08:50 | 1044ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 11:52:15 | 1340ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-19 21:54:00 | 1860ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 05:38:17 | 856ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 17:40:56 | 1682ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 17:15:10 | 24591ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-20 05:42:41 | 9395ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-29 09:39:11 | 5964ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-20 12:30:51 | 1268ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 16:16:51 | 1293ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 13:54:39 | 1291ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 21:58:07 | 1131ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 13:38:35 shown | 875ms | 2 NS 1 A 1 MX | 🔒 Secure |