optibiz.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 5 March 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.63 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by optibiz-dk.mail.protection.outlook.com, xxxxx.mail.eo.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 94.231.103.63 | 3600s | linux118.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| _sipfederationtls._tcp | 10 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=QOmC5ix4AwyvCV4M1BTjHPzNhdMpufQaXqsj3-QLVjU |
| ms83930900 |
| sendinblue-code:0f3d8fdbec125079f2cfe33104f413aa |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (optibiz.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.optibiz.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 94.231.103.63 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: 1/10 · 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 | 2026022700 |
| 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 | 2023-03-05 |
| Expires | 2027-03-04 (136d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 02:25:40 | 1146ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-03 04:35:53 | 1236ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 04:30:59 | 1680ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-14 23:12:19 | 1236ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 17:16:22 | 17336ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 20:32:36 | 5103ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 23:28:41 shown | 5040ms | 4 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:38:19 | 2639ms | 4 NS 1 A 2 MX | 🔒 Secure |