helsinge-realskole.dk DNS records

🖥️ Nameservers2 records 126ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.98	3600s	linux26.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 55ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	helsingerealskole-dk02b.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::a 2a01:111:f403:ca09::5 2a01:111:f403:ca09::f 52.101.68.0 52.101.68.5 52.101.73.155 52.101.73.4	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.40
🔶 Autoconfig	185.21.41.98

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 113ms

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

📝 TXT Records1 records 168ms

TXT Record
v=spf1 ip4:87.116.2.122 ip4:185.163.189.22 ip4:89.221.167.1/24 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

✉️ SPF

Policy	Record (helsinge-realskole.dk)
-all (hard fail)	v=spf1 ip4:87.116.2.122 ip4:185.163.189.22 ip4:89.221.167.1/24 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

📨 DMARC

Policy	Record (_dmarc.helsinge-realskole.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:it@helsinge-realskole.dk; ruf=mailto:it@helsinge-realskole.dk; fo=1

📬 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)

🔐 DNSSEC140ms

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

🏷️ SOA0ms

Field	Value
Serial	2026021801
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

126ms

A

51ms

MX

55ms

AAAA

51ms

TXT

168ms

CAA

84ms

HTTPS

89ms

TLSA

177ms

SOA

0ms

MTA-STS

81ms

DNSSEC

140ms

SRV

113ms

Total

694ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 18:19:27	694ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 18:23:45	800ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 07:38:42	714ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 11:14:32	1547ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 11:11:53	1040ms	2 NS 1 A 1 MX	🔒 Secure	View