efterskolen.dk DNS records

🖥️ Nameservers3 records 144ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.nerdonline.dk	167.233.0.169	mailgw1.nerdonline.dk	AS24940 Hetzner Online GmbH
ns2.nerdonline.dk	95.216.155.89	hel01.nerdonline.dk	AS24940 Hetzner Online GmbH
ns3.nerdonline.dk	167.233.0.167	ns3.nerdonline.dk	AS24940 Hetzner Online GmbH

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.235.50.241	17696s	—	AS60781	LeaseWeb Netherlands B.V.	77.235.50.0/23	🇳🇱 The Netherlands	—

📧 MX Records1 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	38400s	efterskolen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::c 2a01:111:f403:ca09::8 2a01:111:f403:ca09::d 52.101.68.10 52.101.68.27 52.101.73.11 52.101.73.28	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 52.97.189.72
🔶 Autoconfig	167.233.0.165

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 175ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records4 records 322ms

TXT Record
google-site-verification=hL_GwL4PSUKpk44EcymFIxH5qEv3ioOXDCD4jGryl0w
google-site-verification=JvA7pSjheKSfX_BbqIw50b5EUScj2o5IHLVZkJ3InEk
MS=ms40084644
v=spf1 a mx a:mailgw1.nerdonline.dk include:spf.protection.outlook.com include:amazonses.com ?all

✉️ SPF

Policy	Record (efterskolen.dk)
?all (neutral)	v=spf1 a mx a:mailgw1.nerdonline.dk include:spf.protection.outlook.com include:amazonses.com ?all

📨 DMARC

Policy	Record (_dmarc.efterskolen.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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)

🔐 DNSSEC109ms

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

🏷️ SOA70ms

Field	Value
Serial	1409907435
Primary NS (MNAME)	ns.nerdonline.dk
Responsible (RNAME)	hostmaster@nerdonline.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	38400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

144ms

A

42ms

MX

59ms

AAAA

45ms

TXT

322ms

CAA

82ms

HTTPS

83ms

TLSA

174ms

SOA

70ms

MTA-STS

71ms

DNSSEC

109ms

SRV

175ms

Total

1332ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-24 13:25:19	1332ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 06:05:09	687ms	3 NS 1 A 1 MX	🔓 Insecure	View