opkurser.dk

📜 Historical scan 2026-08-26 18:20:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opkurser.dk is a .dk domain served by 2 nameservers (ns1.vercel-dns.com, ns2.vercel-dns.com). It was registered on 28 November 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.16.129 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by opkurser-dk.mail.protection.outlook.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.

🖥️ Nameservers#

2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.vercel-dns.com	198.51.44.13 2620:4d:4000:6259:7:13:0:1	dns1.p13.nsone.net dns1.p13.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc
ns2.vercel-dns.com	198.51.45.13 2a00:edc0:6259:7:13::2	dns2.p13.nsone.net dns2.p13.nsone.net	AS62597 NSONE Inc AS62597 NSONE Inc

🌍 A Records#

2 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.150.16.129	1800s	—	AS16509	Amazon.com, Inc.	216.150.16.0/24	🇺🇸 United States	—
216.150.16.65	1800s	—	AS16509	Amazon.com, Inc.	216.150.16.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	60s	opkurser-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca09::1 2a01:111:f403:ca09::8 2a01:111:f403:ca09::e 52.101.181.153 52.101.68.15 52.101.73.12 52.101.73.26	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-as9pr05cu01302.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	216.150.16.1

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 113ms

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

📝 TXT Records#

3 records 321ms

TXT Record
google-site-verification=fbf7p5oItdoP6VCDZotSoq420oAusAgEYhu9jgmwkYE
k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrLHiExVd55zd/IQ/J/mRwSRMAocV/hMB3jXwaHH36d9NaVynQFYV8NaWi69c1veUtRzGt7yAioXqLj7Z4TeEUoOLgrKsn8YnckGs9i3B3tVFB+Ch/4mPhXWiNfNdynHWBcPcbJ8kjEQ2U8y78dHZj1YeRXXVvWob2OaKynO8/lQIDAQAB;
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:spf.dynamicweb-cms.com include:amazonses.com -all

✉️ SPF#

Policy	Record (opkurser.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com include:spf.dynamicweb-cms.com include:amazonses.com -all

📨 DMARC#

Policy	Record (_dmarc.opkurser.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:re+q85ijlgmrud@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

3 records 56ms

Flags	Tag	Value
0	issue	letsencrypt.org
0	issue	pki.goog
0	issue	sectigo.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 00:18:34

www	216.150.1.193 216.150.16.193 (AS16509) (address records, no CNAME)
www vs bare domain	Same network opkurser.dk: 216.150.1.1 216.150.1.65 (AS16509) www.opkurser.dk: 216.150.1.193 216.150.16.193 (AS16509)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

2 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
selector2	selector2-opkurser-dk._domainkey.opkurser.onmicrosoft.com	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: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

100ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1756127842
Primary NS (MNAME)	ns1.vercel-dns.com
Responsible (RNAME)	hostmaster@nsone.net
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-23 06:41:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-11-28
Expires	2031-11-30 (1864d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
lovgivningen.dk	DANDOMAIN A/S
lovguiden.dk	Punktum dk A/S (direct)
oekonomiguiden.dk	DANDOMAIN A/S
øpkurser.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

52ms

46ms

AAAA

57ms

TXT

321ms

CAA

56ms

HTTPS

46ms

TLSA

374ms

SOA

0ms

MTA-STS

71ms

DNSSEC

100ms

SRV

113ms

Total

1125ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 21:18:37	1398ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 18:42:50	1125ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 06:46:43	1228ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-21 16:41:32	1589ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 06:34:15	1005ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 11:26:12	1435ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 18:20:00 shown	1125ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 11:02:40	1202ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 01:55:59	1081ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 03:35:05	1414ms	2 NS 2 A 1 MX	🔓 Insecure