smidt-nielsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 June 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.104 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by smidtnielsen-dk01c.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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.104 | 3600s | webcluster2.webpod13-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10b:8042:cca4:423d:fca9 | 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=ms57336905 |
| v=spf1 include:_custspf.one.com include:_spf.google.com include:spf.protection.outlook.com ~all |
| Policy | Record (smidt-nielsen.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com include:_spf.google.com include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.smidt-nielsen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 46.30.213.104 2a02:2350:5:10b:8042:cca4:423d:fca9 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network smidt-nielsen.dk: 46.30.213.104 2a02:2350:5:10b:8042:cca4:423d:fca9 (AS51468) www.smidt-nielsen.dk: 46.30.213.104 2a02:2350:5:10b:8042:cca4:423d:fca9 (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-smidtnielsen-dk01c._domainkey.smidtnielsen.onmicrosoft.com | RSA · ~1024 bit below 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: 3/10 · 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 | 2026101601 |
| 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 | 2005-06-02 |
| Expires | 2027-06-30 (253d) |
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).
| Domain | Registrar |
|---|---|
| armador.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 02:56:36 shown | 1877ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 03:37:32 | 3002ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-15 14:24:05 | 1695ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 15:22:02 | 17017ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 01:25:37 | 1327ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 08:23:50 | 1211ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 07:05:46 | 3620ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 12:25:37 | 962ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 02:46:38 | 1077ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 15:35:52 | 967ms | 2 NS 1 A 1 MX | 🔒 Secure |