service-course.dk

📜 Historical scan 2026-06-22 04:58:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

service-course.dk is a .dk domain served by 2 nameservers (ns1.yayhosting.dk, ns2.yayhosting.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by servicecourse-dk01i.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 95ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.yayhosting.dk	195.242.130.62 2001:67c:564:fffe::100	ns1.yayhosting.dk —	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.yayhosting.dk	2a00:1b18:2:3:1::2 62.69.152.35	ns2.yayhosting.dk 35.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

1 records 88ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
51.158.234.103	14400s	103-234-158-51.instances.scw.cloud	AS12876	—	—	—	—

📧 MX Records#

1 records 90ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	servicecourse-dk01i.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::6 2a01:111:f403:ca09::2 2a01:111:f403:ca09::8 52.101.68.12 52.101.68.16 52.101.68.5 52.101.73.4	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.100.4.166
🔶 Autoconfig	195.242.130.60

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 202ms

TXT Record
v=spf1 ip4:195.242.130.60 ip4:87.61.100.188 include:_spf.yayhosting.dk include:spf.protection.outlook.com include:_spf.tem.scaleway.com -all

✉️ SPF#

Policy	Record (service-course.dk)
-all (hard fail)	v=spf1 ip4:195.242.130.60 ip4:87.61.100.188 include:_spf.yayhosting.dk include:spf.protection.outlook.com include:_spf.tem.scaleway.com -all

📨 DMARC#

Policy	Record (_dmarc.service-course.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 2026-10-09 13:16:05

www CNAME	service-course.dk (all on service-course.dk) → 51.158.234.103 (AS12876)
www vs bare domain	Same network service-course.dk: 51.158.234.103 (AS12876) www.service-course.dk: 51.158.234.103 (AS12876)
Wildcard	No
Denial of existence	NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit
selector1	selector1-servicecourse-dk01i._domainkey.scourse.onmicrosoft.com	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: 3/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.service-course.dk	5c9Vxxf2LNWdWHxMBbBcr-0QE5m7XyDFHQuRelEz7kE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

197ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026062201
Primary NS (MNAME)	ns1.yayhosting.dk
Responsible (RNAME)	drift@yayhosting.dk
Refresh	3600s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

95ms

88ms

90ms

AAAA

91ms

TXT

202ms

CAA

94ms

HTTPS

85ms

TLSA

167ms

SOA

0ms

MTA-STS

59ms

DNSSEC

197ms

SRV

919ms

Total

1470ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 13:16:05	1418ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-26 06:12:18	626ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 04:36:38	1175ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-18 21:56:44	18030ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-17 18:08:49	3200ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 04:58:25 shown	1470ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 19:03:57	1528ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:37:44	1828ms	2 NS 1 A 1 MX	🔓 Insecure