opter.dk

📜 Historical scan 2026-06-18 06:16:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opter.dk is a .dk domain served by 4 nameservers (ns1-07.azure-dns.com, ns2-07.azure-dns.net, ns3-07.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by opter-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.

🖥️ Nameservers#

4 records 295ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-07.azure-dns.com	13.107.236.7 2603:1061:0:700::7	ns1-07.azure-dns.com ns1-07.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-07.azure-dns.net	150.171.21.7 2620:1ec:8ec:700::7	ns2-07.azure-dns.net ns2-07.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-07.azure-dns.org	204.14.183.7 2a01:111:4000:700::7	ns3-07.azure-dns.org ns3-07.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-07.azure-dns.info	208.84.5.7 2620:1ec:bda:700::7	ns4-07.azure-dns.info ns4-07.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

1 records 124ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.201.61.217	—	uke.oderland.com	AS44136	—	—	—	—

📧 MX Records#

1 records 302ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	opter-dk.mail.protection.outlook.com	52.101.68.12 52.101.68.32 52.101.73.15 52.101.73.8	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.179.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 309ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 395ms

TXT Record
MS=ms14802292
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-09 10:00:24

www	91.201.61.217 (AS44136) (address records, no CNAME)
www vs bare domain	Same network opter.dk: 91.201.61.217 (AS44136) www.opter.dk: 91.201.61.217 (AS44136)
Wildcard	No

🔎 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#

318ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

282ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-07.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

295ms

124ms

302ms

AAAA

245ms

TXT

395ms

CAA

113ms

HTTPS

289ms

TLSA

313ms

SOA

282ms

MTA-STS

238ms

DNSSEC

318ms

SRV

309ms

Total

1344ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 10:00:24	1230ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-01 00:46:20	710ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-27 05:14:18	805ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-23 15:21:16	2024ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-22 19:44:22	1180ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 14:06:57	1222ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-18 06:16:46 shown	1344ms	4 NS 1 A 1 MX	🔓 Insecure