ask4us.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 15 September 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.86 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by ask4us-dk.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 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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.86 | 3600s | webcluster1.webpod13-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10b:b7:a0b2:6088:a612 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms87360452 |
| P-m8TDq7H39H |
| v=spf1 include:spf.protection.outlook.com include:spf.permido.com -all |
| Policy | Record (ask4us.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.permido.com -all |
| Policy | Record (_dmarc.ask4us.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:test@ask4us.dk |
| www | 46.30.213.86 2a02:2350:5:10b:b7:a0b2:6088:a612 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network ask4us.dk: 46.30.213.86 2a02:2350:5:10b:b7:a0b2:6088:a612 (AS51468) www.ask4us.dk: 46.30.213.86 2a02:2350:5:10b:b7:a0b2:6088:a612 (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-ask4us-dk._domainkey.ask4us.onmicrosoft.com | 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: 2/10 · 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 | 2026092901 |
| 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 | 2015-09-15 |
| Expires | 2027-09-30 (348d) |
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 |
|---|---|---|---|
| 2026-10-01 04:33:19 shown | 893ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 13:36:45 | 1395ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 13:12:36 | 5137ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 15:07:50 | 1276ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 14:15:43 | 1302ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-30 06:50:38 | 892ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-05 23:12:22 | 1591ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-11 19:56:30 | 1242ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-28 13:58:09 | 969ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 17:50:58 | 886ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 13:44:17 | 694ms | 2 NS 1 A 1 MX | 🔒 Secure |