markusskolen.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.79	3600s	webcluster1.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	markusskolen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::f 2a01:111:f403:ca09::20 2a01:111:f403:ca09::d 52.101.103.137 52.101.68.16 52.101.68.25 52.101.73.22	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am7pr05cu00106.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 → 40.104.116.56

🔷 AAAA Records (IPv6)1 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:111:7b:800f:69fd:5e9d	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 159ms

TXT Record
google-site-verification=_MLA7lfRRg5ljNBpw0ZYR4ZqG7VFCC8PjvNU9x3nO1M
v=spf1 mx a include:spf.permido.com include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (markusskolen.dk)
-all (hard fail)	v=spf1 mx a include:spf.permido.com include:spf.protection.outlook.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 DNSSEC74ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

48ms

A

46ms

MX

37ms

AAAA

43ms

TXT

159ms

CAA

49ms

HTTPS

59ms

TLSA

590ms

SOA

0ms

MTA-STS

70ms

DNSSEC

74ms

SRV

59ms

Total

1117ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 09:34:13	1117ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 23:09:35	7020ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-24 06:47:40	1727ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-21 02:19:16	1849ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 20:44:09	1132ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 12:39:36	1166ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 03:33:03	2503ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-19 17:09:28	825ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 08:47:09	1067ms	2 NS 1 A 1 MX	🔒 Secure	View