leankursus.dk

📜 Historical scan 2026-08-21 23:49:45  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

leankursus.dk is a .dk domain served by 3 nameservers (ns5.chosting.dk, ns6.chosting.dk, ns7.chosting.dk). It was registered on 30 March 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 76.76.21.21 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by leankursus.dk. 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#

3 records   348ms
NameserverIP addressesPTRASN / ISP
ns5.chosting.dk 167.235.66.236
2a01:4f8:1c1e:d097::1		 ns5.chosting.dk
ns5.chosting.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns6.chosting.dk 2001:41d0:305:2100::80e9
51.91.57.33		 ns6.chosting.dk
ns6.chosting.dk		 AS16276 OVH SAS
AS16276 OVH SAS
ns7.chosting.dk 178.20.220.33 ns7.chosting.dk AS21060 Atea A/S

🌍 A Records#

1 records   301ms
IPTTLPTRASNISP / OrgCIDRCountryCity
76.76.21.21 14400s — AS16509 Amazon.com, Inc. 76.76.21.0/24 🇺🇸 United States Walnut

📧 MX Records#

1 records   284ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s leankursus.dk 76.76.21.21 — AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover178.20.216.128
🔶 Autoconfig178.20.216.128

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   380ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 cpanelemaildiscovery.cpanel.net

📝 TXT Records#

5 records   1354ms
TXT Record
google-site-verification=sp5CzYlOJwgJLU67lU-T_RUgWPPTES60g_0DtyrrJ6M
google-site-verification=w4tQwReJuyD6ZYuTN9wf2yFYW1pWAcx_atQPGhmHaDQ
google-site-verification=w4tQwReJuyD6ZYuTN9wf2yFYW1pWAcx_atQPGhmHaDQ v=spf1 include:spf.chosting.dk include:spf.mandrillapp.com ?all
openai-domain-verification=dv-jrevhVwBe70IdQTtLraaG1dV
v=spf1 ip4:178.20.216.128 include:spf.chosting.dk +mx +a ~all

✉️ SPF#

PolicyRecord (leankursus.dk)
~all (soft fail) v=spf1 ip4:178.20.216.128 include:spf.chosting.dk +mx +a ~all

📨 DMARC#

PolicyRecord (_dmarc.leankursus.dk)
p=none (monitor only) v=DMARC1; p=none;

📬 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 2026-10-21 20:07:56
www CNAMEcname.vercel-dns.com (all on vercel-dns.com)
www vs bare domainSame network
leankursus.dk: 76.76.21.21 (AS16509)
www.leankursus.dk: 66.33.60.35 76.76.21.123 (AS16509)
WildcardNo

✍️ DKIM keys#

3 found
SelectorCNAMEKey
default — RSA · ~2048 bit
s1 s1.domainkey.u34639705.wl206.sendgrid.net RSA · ~2048 bit
s2 s2.domainkey.u34639705.wl206.sendgrid.net RSA · ~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: 5/10 · policy: ~all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.leankursus.dk pDsnu2V-hpPLOmhS5_fL4u48TB3ALf-w8_YQpTppP4c

🔗 TLSA / DANE#

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

🔐 DNSSEC#

681ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026082107
Primary NS (MNAME)ns5.chosting.dk
Responsible (RNAME)logs@chosting.dk
Refresh3600s
Retry1800s
Expire1209600s
Minimum (neg-cache TTL)86400s

📋 Registration#

WHOIS fetched 2026-10-19 13:52:35
FieldValue
RegistrarFIONIA IT ApS
Registered2010-03-30
Expires2027-03-31 (159d)

🔗 Same registrant#

6 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).

DomainRegistrar
compassdigital.dkFIONIA IT ApS
comss.dkA/S SCANNET
htk-ecolife.dkFIONIA IT ApS
platon-academy.dkFIONIA IT ApS
rpa-huset.dkFIONIA IT ApS
treno.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
348ms
A
301ms
MX
284ms
AAAA
318ms
TXT
1354ms
CAA
272ms
HTTPS
351ms
TLSA
327ms
SOA
0ms
MTA-STS
601ms
DNSSEC
681ms
SRV
380ms
Total
5457ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-21 20:07:56 1511ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-20 14:33:55 1401ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-19 13:39:09 1296ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-18 13:35:59 1293ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-17 12:48:08 790ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-16 11:51:51 1401ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-15 11:07:32 605ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-14 08:33:56 750ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-13 06:23:36 625ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-12 05:51:38 460ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-11 05:19:42 1835ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-10 03:52:12 769ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-08 16:59:09 1086ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-07 16:51:22 914ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-06 16:39:56 720ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-05 15:22:11 706ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-04 15:18:26 1801ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-03 15:12:56 849ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-02 15:10:56 671ms 3 NS 1 A 1 MX 🔓 Insecure
2026-10-01 15:08:42 1906ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-30 14:47:30 897ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-29 14:39:05 978ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-28 14:35:08 818ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-27 14:23:28 642ms 3 NS 1 A 1 MX 🔓 Insecure
2026-09-26 14:09:17 719ms 3 NS 1 A 1 MX 🔓 Insecure
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