klassecentret.dk DNS records

🖥️ Nameservers2 records 36ms

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 Records1 records 36ms

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

📧 MX Records1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	c31e2a86088b458fd6476e1fb5b903.mail.outlook.com	2a01:111:f403:c803:: 2a01:111:f403:f902::2 2a01:111:f403:f907::1 2a01:111:f403:f913:: 40.93.192.4 52.101.194.3 52.101.41.22 52.101.42.18	mail-bn1pr21cu00200.inbound.protection.outlook.com mail-mn2pr02cu00202.inbound.protection.outlook.com mail-dm1pr04cu00201.inbound.protection.outlook.com mail-cy1pr03cu00100.inbound.protection.outlook.com mail-dm2pr04cu00404.inbound.protection.outlook.com mail-ch1pr04cu00103.inbound.protection.outlook.com mail-sj2pr05cu00406.inbound.protection.outlook.com mail-co1pr03cu00302.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 → 40.104.116.24
🔶 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 Records1 records 74ms

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

📝 TXT Records2 records 216ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC110ms

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

🏷️ SOA0ms

Field	Value
Serial	2013020861
Primary NS (MNAME)	ns.vordbkom.dk
Responsible (RNAME)	hostmaster
Refresh	14400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	900s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

36ms

A

36ms

MX

36ms

AAAA

36ms

TXT

216ms

CAA

42ms

HTTPS

28ms

TLSA

1376ms

SOA

0ms

MTA-STS

57ms

DNSSEC

110ms

SRV

74ms

Total

1996ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 20:51:45	1996ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-29 02:11:09	3152ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 21:20:16	975ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 22:38:42	1234ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 21:33:43	3904ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-17 13:01:22	1206ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-14 19:32:49	2932ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-11 23:34:31	3403ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 18:14:04	1421ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-02 22:11:30	12766ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-28 15:30:29	9888ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-26 05:52:21	9266ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 05:28:15	9878ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 16:05:07	8949ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 08:08:52	10130ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 08:13:21	1221ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 04:21:26	3621ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 05:19:52	9735ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 14:06:00	5603ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 17:03:00	3407ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 10:48:16	4625ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 19:11:17	2430ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:05:51	16058ms	2 NS 1 A 1 MX	🔒 Secure	View