koege-realskole.dk DNS records

🖥️ Nameservers2 records 79ms

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 87ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
136.243.167.76	43200s	dedi5139.your-server.de	AS24940	Hetzner Online GmbH	136.243.0.0/16	🇩🇪 Germany	Nuremberg

📧 MX Records1 records 80ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	koegerealskole-dk01c.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::2 2a01:111:f403:ca09::a 2a01:111:f403:ca09::b 52.101.103.137 52.101.68.15 52.101.68.3 52.101.73.153	mail-db7pr03cu00507.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as8pr05cu00401.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)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 325ms

TXT Record
facebook-domain-verification=j11qnvqi0i4zyse6piry09hgwvsbyi
v=spf1 include:spfinclude.signflow.dk include:spf.protection.outlook.com -all
v=spf1 mx a include:web.shared.mysmtp.com ip4:89.221.167.1/24 ~all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (koege-realskole.dk)
-all (hard fail)	v=spf1 include:spfinclude.signflow.dk include:spf.protection.outlook.com -all
~all (soft fail)	v=spf1 mx a include:web.shared.mysmtp.com ip4:89.221.167.1/24 ~all

📨 DMARC

Policy	Record (_dmarc.koege-realskole.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100;

📬 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)

🔐 DNSSEC242ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082906
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

79ms

A

87ms

MX

80ms

AAAA

91ms

TXT

325ms

CAA

114ms

HTTPS

103ms

TLSA

806ms

SOA

0ms

MTA-STS

143ms

DNSSEC

242ms

SRV

167ms

Total

2059ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 05:24:00	2059ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-19 06:26:52	2568ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-14 20:17:38	1642ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-19 09:52:39	5201ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 11:05:54	2964ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 01:14:40	2606ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 09:45:33	1981ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:09:01	753ms	2 NS 1 A 1 MX	🔒 Secure	View