realskolen.dk DNS records

🖥️ Nameservers4 records 69ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.217.249	3600s	vps.simpledigital.dk	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records1 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	realskolen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::7 2a01:111:f403:ca09::8 2a01:111:f403:ca48::c 52.101.68.10 52.101.68.21 52.101.68.29 52.101.68.5	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-du2pr03cu00105.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 → 40.104.116.8
🔶 Autoconfig	178.20.217.249

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 189ms

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

✉️ SPF

Policy	Record (realskolen.dk)
-all (hard fail)	v=spf1 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)

🔐 DNSSEC122ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2025092501
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

69ms

A

41ms

MX

59ms

AAAA

60ms

TXT

189ms

CAA

56ms

HTTPS

65ms

TLSA

373ms

SOA

0ms

MTA-STS

76ms

DNSSEC

122ms

SRV

92ms

Total

1484ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 12:28:24	1484ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-07-02 14:21:08	1354ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-24 05:52:17	1523ms	4 NS 1 A 1 MX	❓ Unknown	View
2026-06-22 12:28:40	1187ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 02:22:38	3222ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 18:55:41	1293ms	4 NS 1 A 1 MX	🔓 Insecure	View