optibiz.dk

📜 Historical scan 2026-06-22 20:32:36 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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.

🖥️ Nameservers#

4 records 75ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns5.simply.com	—	—	—

🌍 A Records#

1 records 56ms

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	—

📧 MX Records#

2 records 64ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	optibiz-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::9 2a01:111:f403:ca09::7 2a01:111:f403:ca09::c 52.101.68.3 52.101.68.5 52.101.73.30 52.101.73.6	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am6pr04cu00306.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation
11	3600s	xxxxx.mail.eo.outlook.com	2a01:111:f403:c922::2 2a01:111:f403:c92c::3 2a01:111:f403:c946::2 2a01:111:f403:f90c:: 52.101.194.13 52.101.41.58 52.101.9.17 52.101.9.2	mail-bl0pr02cu00702.inbound.protection.outlook.com mail-dm5pr04cu00103.inbound.protection.outlook.com mail-ch4pr04cu00102.inbound.protection.outlook.com mail-sn1pr03cu00100.inbound.protection.outlook.com mail-ch0pr04cu00605.inbound.protection.outlook.com mail-sj0pr02cu00102.inbound.protection.outlook.com — mail-mn2pr02cu00202.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 92ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com
_sipfederationtls._tcp	10	1	5061	sipfed.online.lync.com

📝 TXT Records#

4 records 268ms

TXT Record
google-site-verification=QOmC5ix4AwyvCV4M1BTjHPzNhdMpufQaXqsj3-QLVjU
ms83930900
sendinblue-code:0f3d8fdbec125079f2cfe33104f413aa
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (optibiz.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.optibiz.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 02:25:40

www	94.231.103.63 (AS48854) (address records, no CNAME)
www vs bare domain	Same network optibiz.dk: 94.231.103.63 (AS48854) www.optibiz.dk: 94.231.103.63 (AS48854)
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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
mail	—	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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

106ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

62ms

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

📋 Registration#

WHOIS fetched 2026-10-03 04:52:17

Field	Value
Registrar	Simply.com A/S
Registered	2023-03-05
Expires	2027-03-04 (137d)

📋 WHOIS#

⏱️ Lookup Timing#

75ms

56ms

64ms

AAAA

130ms

TXT

268ms

CAA

72ms

HTTPS

71ms

TLSA

4030ms

SOA

62ms

MTA-STS

63ms

DNSSEC

106ms

SRV

92ms

Total

5103ms

🕐 Scan History#

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 shown	5103ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-18 23:28:41	5040ms	4 NS 1 A 2 MX	🔒 Secure
2026-06-17 11:38:19	2639ms	4 NS 1 A 2 MX	🔒 Secure