sanderum.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 21 April 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.4 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx.simply.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 93.191.156.4 | 600s | linux170.unoeuro.com | AS48854 | team.blue Denmark A/S | 93.191.152.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | sanderum.dk → 93.191.156.4 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com ~all |
| Policy | Record (sanderum.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.simply.com ~all |
| www CNAME | sanderum.dk (all on sanderum.dk) → 93.191.156.4 (AS48854) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.sanderum.dk | sanderum.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100601 |
| 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 | 2016-04-21 |
| Expires | 2027-04-30 (195d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 12:26:30 | 894ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 11:22:36 | 349ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 06:23:15 | 422ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 04:43:21 shown | 1729ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 01:31:57 | 388ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 01:06:19 | 610ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 00:10:43 | 681ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 16:31:55 | 635ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 10:59:23 | 2641ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-24 19:41:18 | 6600ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 20:42:35 | 589ms | 2 NS 1 A 1 MX | 🔒 Secure |