service-course.dk

📜 Historical scan 2026-07-17 18:08:49 · ← 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. Its website address 51.158.234.103 is hosted by Scaleway SAS (AS12876) in The Netherlands. 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 42ms

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 ns2.yayhosting.dk	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
51.158.234.103	14400s	103-234-158-51.instances.scw.cloud	AS12876	Scaleway SAS	51.158.0.0/15	🇳🇱 The Netherlands	Haarlem

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	servicecourse-dk01i.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::2 2a01:111:f403:ca09::6 2a01:111:f403:ca09::f 52.101.68.16 52.101.68.39 52.101.73.1 52.101.73.19	mail-db7pr03cu00601.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr04cu00803.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 → 52.98.149.152
🔶 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 196ms

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	2KFSDy2yofsAD53B20fBxJ_pcnMurQKLbTS6E8j1NdE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

140ms

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	2026071701
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#

42ms

44ms

53ms

AAAA

42ms

TXT

196ms

CAA

41ms

HTTPS

49ms

TLSA

2301ms

SOA

0ms

MTA-STS

140ms

DNSSEC

140ms

SRV

127ms

Total

3200ms

🕐 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 shown	3200ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 04:58:25	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