4plus.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 April 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.127 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by 4plus-dk.m-v1.mx.microsoft. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.215.127 | 3600s | webforward.webpod16-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| 🔶 Autoconfig | 46.30.215.127 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms27010223 |
| v=spf1 include:spf.protection.outlook.com include:spf.comendosystems.com -all |
| Policy | Record (4plus.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:spf.comendosystems.com -all |
| Policy | Record (_dmarc.4plus.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email; |
| www CNAME | 4plus.dk (all on 4plus.dk) → 195.47.247.18 (AS51468) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 38D895F5105BC2545822C17A2444F4B0… |
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 133086C7B822371A4A3304F1661A7880… |
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 6EBFF927297A5B3AAF5EAE672252C36A… |
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | C495D9E40F7E625BE22F83CC64305182… |
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 5F88694615E4C61686E106B84C3338C6… |
| SMTP _25._tcp.4plus-dk.m-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | A6C267923B26A4A9617EDA73D8DB4FBC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032401 |
| 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 | 2014-04-22 |
| Expires | 2027-04-30 (193d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 16:07:57 | 1748ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 15:04:27 | 705ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 12:24:58 | 1609ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 00:06:30 | 690ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 00:07:07 shown | 967ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 13:14:26 | 852ms | 2 NS 1 A 1 MX | 🔒 Secure |