klassecentret.dk

Records from scan: 2026-10-13 05:32:20 · 4477ms total · last checked 2026-10-16 09:02 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

klassecentret.dk is a .dk domain served by 2 nameservers (ns.vordbkom.dk, ns.vordbskoler.dk). It was registered on 8 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 c31e2a86088b458fd6476e1fb5b903.mail.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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 132ms

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 125ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.56.147.142	11700s	—	AS31027	GlobalConnect A/S	5.56.144.0/20	🇩🇰 Denmark	Karlslunde

📧 MX Records#

1 records 68ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	c31e2a86088b458fd6476e1fb5b903.mail.outlook.com	2a01:111:f403:c927::7 2a01:111:f403:f805::1 2a01:111:f403:f805::2 2a01:111:f403:f90f::1 40.93.192.4 52.101.41.28 52.101.60.176 52.101.60.191	mail-bn0pr04cu00907.inbound.protection.outlook.com mail-co1pr03cu00301.inbound.protection.outlook.com mail-co2pr03cu00202.inbound.protection.outlook.com mail-sa9pr04cu00201.inbound.protection.outlook.com mail-dm2pr04cu00404.inbound.protection.outlook.com mail-sj0pr03cu01504.inbound.protection.outlook.com mail-bn0pr04cu00900.inbound.protection.outlook.com mail-bn0pr05cu00107.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 → 52.98.149.136
🔶 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 191ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	10	2	5061	federation.messenger.msn.com

📝 TXT Records#

2 records 396ms

TXT Record
v=msv1 t=c31e2a86088b458fd6476e1fb5b903
v=spf1 include:_spf4520.spfprotect.com -all

✉️ SPF#

Policy	Record (klassecentret.dk)
-all (hard fail)	v=spf1 include:_spf4520.spfprotect.com -all

📨 DMARC#

Policy	Record (_dmarc.klassecentret.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#

checked 2026-10-13 05:32:20

www	5.56.147.142 (AS31027) (address records, no CNAME)
www vs bare domain	Same network klassecentret.dk: 5.56.147.142 (AS31027) www.klassecentret.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#

247ms

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

🏷️ SOA#

128ms

Field	Value
Serial	2013020877
Primary NS (MNAME)	ns.vordbkom.dk
Responsible (RNAME)	hostmaster
Refresh	14400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	900s

📋 Registration#

WHOIS fetched 2026-10-06 09:33:23

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-06-08
Expires	2027-06-30 (256d)

📋 WHOIS#

⏱️ Lookup Timing#

132ms

125ms

68ms

AAAA

144ms

TXT

396ms

CAA

81ms

HTTPS

135ms

TLSA

271ms

SOA

128ms

MTA-STS

169ms

DNSSEC

247ms

SRV

191ms

Total

4477ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 05:32:20 shown	4477ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-12 02:11:24	4802ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 23:46:12	2866ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 17:28:04	4333ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 16:33:58	626ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 16:29:44	3071ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 15:14:29	2256ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 14:59:55	852ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 14:05:27	1096ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 16:17:51	3109ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-15 19:44:35	961ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-09 00:01:53	2285ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 21:34:28	4399ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 20:51:45	1996ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 02:11:09	3152ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 21:20:16	975ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-22 22:38:42	1234ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-19 21:33:43	3904ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 13:01:22	1206ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-14 19:32:49	2932ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 23:34:31	3403ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-06 18:14:04	1421ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-02 22:11:30	12766ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-28 15:30:29	9888ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-26 05:52:21	9266ms	2 NS 1 A 1 MX	🔒 Secure