tandcentret.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 3 February 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 31.43.160.6 is hosted by Amazon.com, Inc. (AS16509) in The Netherlands. Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 31.43.160.6 | 3600s | sites.framer.app | AS16509 | Amazon.com, Inc. | 31.43.160.0/23 | 🇳🇱 The Netherlands | Amsterdam |
| 31.43.161.6 | 3600s | sites.framer.app | AS16509 | Amazon.com, Inc. | 31.43.160.0/23 | 🇳🇱 The Netherlands | Amsterdam |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com -all |
| Policy | Record (tandcentret.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| Policy | Record (_dmarc.tandcentret.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www CNAME | sites.framer.app (all on framer.app) |
| www vs bare domain | Same network tandcentret.dk: 31.43.160.6 31.43.161.6 (AS16509) www.tandcentret.dk: 31.43.160.6 31.43.161.6 (AS16509) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| 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 | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026030201 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2003-02-03 |
| Expires | 2027-02-28 (129d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 21:13:56 | 433ms | 3 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-06 04:11:55 | 939ms | 3 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-04 04:01:58 | 413ms | 3 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 14:13:36 shown | 653ms | 3 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:23:39 | 2782ms | 3 NS 2 A 1 MX | 🔓 Insecure |