10klassecentret.dk

📜 Historical scan 2026-09-29 15:32:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

10klassecentret.dk is a .dk domain served by 2 nameservers (ns.vordbkom.dk, ns.vordbskoler.dk). It was registered on 29 June 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.56.147.142 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by 10klassecentret-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.vordbkom.dk	131.165.202.1	ns.vordbkom.dk	AS6834 KMD A/S
ns.vordbskoler.dk	5.56.147.154	—	AS31027 GlobalConnect A/S

🌍 A Records#

1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.56.147.142	900s	—	AS31027	GlobalConnect A/S	5.56.144.0/20	🇩🇰 Denmark	Karlslunde

📧 MX Records#

1 records 83ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	10klassecentret-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::f 2a01:111:f403:ca48::a 2a01:111:f403:ca48::c 52.101.209.153 52.101.68.39 52.101.73.120 52.101.91.21	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-matpr05cu00105.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	5.56.147.142

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 112ms

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

📝 TXT Records#

2 records 287ms

TXT Record
MS=ms15663557
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (10klassecentret.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.10klassecentret.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:60f69872d8c04@dmarc.centerasecurity.com;

📬 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 2026-10-13 01:07:38

www	5.56.147.142 (AS31027) (address records, no CNAME)
www vs bare domain	Same network 10klassecentret.dk: 5.56.147.142 (AS31027) www.10klassecentret.dk: 5.56.147.142 (AS31027)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

132ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	20130897
Primary NS (MNAME)	ns.vordbkom.dk
Responsible (RNAME)	hostmaster
Refresh	14400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	900s

📋 Registration#

WHOIS fetched 2026-10-10 23:22:11

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-06-29
Expires	2027-06-30 (256d)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

52ms

83ms

AAAA

52ms

TXT

287ms

CAA

60ms

HTTPS

51ms

TLSA

2205ms

SOA

0ms

MTA-STS

99ms

DNSSEC

132ms

SRV

112ms

Total

3628ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 01:07:37	4020ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-12 00:36:37	1368ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 23:04:37	1311ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 20:20:54	2127ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 15:56:58	1396ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 15:49:29	1563ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 15:32:23 shown	3628ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 13:45:45	1300ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 13:36:17	3007ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 12:53:50	2317ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 01:03:39	1119ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 15:32:09	3698ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-10 14:37:57	2134ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-06 22:08:11	2980ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 04:58:00	2211ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 08:59:47	1408ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 17:03:09	904ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-23 04:09:58	3248ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 03:56:27	6843ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 02:23:42	6320ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 22:03:42	3840ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 09:01:16	4194ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 22:07:33	5263ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-07 02:34:09	2208ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-03 13:34:47	10008ms	2 NS 1 A 1 MX	🔒 Secure